Projeler / Projects

Permanent URI for this collectionhttps://ada.atilim.edu.tr/handle/123456789/26

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Alan Özelinde Sosyalleştirme Yaklaşımı Çerçevesinde Etkili Ebeveynlik: Annenin Duygusal Erişilebilirliği ile Gelişimsel Çocuk Çıktıları Arasındaki İlişki
This study aims to examine effective parenting within the framework of the domains-of_x0002_socialization approach. Three separate studies were carried out. In the first study, Domain_x0002_Specific Parenting Interview (DSPI) was developed to measure parenting quality in different socialization domains and its psychometric properties were examined. The deductive content analysis of the DSPI was carried out in the second study. In the third study, the replicability of the first study was tested, the interactions between different socialization domains were examined qualitatively, and the relations of mothers' knowledge on effective parenting and the quality of their parenting behaviors with developmental child outcomes were examined. The participants of the first study consisted of 82 mothers with children between 35-76 months. The participants of the second study consisted of 50 mothers, which were randomly selected from the data set of the first study. The participants of the third study consisted of 141 mothers and fathers, who have children aged between 47-72 months. The findings of the first study provided evidence that DSPI is a valid and reliable measurement tool. The qualitative findings of the second study showed that the domains-of-socialization approach and the daily life interactions of mother-child dyads were mostly consistent. The third study showed that the quality of parenting behaviors in different socialization domains were related to various child outcomes through emotion regulation and inhibitory control.
Atılım mPAD’e özel İstatistik Uygulaması: Probability & Statistrics (PS) Files
Industrial Engineering
Recently, the effective use of technology in the field of education is increasing rapidly. For this reason, various suggestions have been presented in order to increase the use of technological tools and equipment in the course environment and to ensure that they are used effectively. In this context, Atılım mPAD, developed within the scope of Atılım University Mobile Education Project, is a supportive product for e-learning. In this project, it is aimed to ensure the sustainability of mPADs, which are actively used for educational purposes in Atılım University Preparatory School, by making them available throughout undergraduate education. In this direction, Probability and Statistics courses, which are compulsory for all departments in the Faculty of Engineering, and some departments of the Faculties of Arts and Sciences, Business Administration and Health Sciences, which are taken by many students at the undergraduate level, were handled as a pilot application. "Probability & Statistics (PS) Files" application that will work on Atılım mPAD will be developed in order to make students' learning more effective and to ensure their active participation in these courses. With the developed PS Files application, it is aimed to increase students' mastery of theoretical subjects in the classroom environment. In addition, with the use of Atılım mPAD during the teaching of statistics applications, an active learning will be realized without creating a physical barrier during face-to-face verbal communication in the lessons. Moreover, it is aimed that the students actively participate in the lessons and have the opportunities in laboratory conditions both in the course and whenever they want and in any place.
Aydınoğulları-Erken Osmanlı Döneminde Ayasuluk/Efes'te Kültür ve Teknoloji Transferi: Disiplinler Arası Araştırmalar Işığında İsa Bey Hamamı Seramikleri
Ayasuluk/Ephesus city, which was conquered by the Turks in 1304 and became the capital of Aydınoğulları since the middle of the century, had one of the busiest ports between Asia and Europe in the 14th-15th centuries in the Western Anatolia region (Pfeiffer-Taş 2014; 2019). However, until the researches in recent years, the view in the literature was dominant, that the port of Ephesus became unusable since the 7th (AD) century, that the city lost its importance and turned into a small settlement with the conquest of the Turks. The importance of Ayasuluk Port, which continued its activities in today's Pamucak region during the Aydınoğulları period, in close and long distance trade has been documented with excavation findings such as ceramics and coins, as well as written sources. The city had played an important role both regionally and in terms of interactions and culture-technology transfer between China, the Middle East and Europe. Although the Seljuk-Islamic ceramic production tradition and techniques, which came to the region with the Turks, are observed in the unearthed findings, the presence of imported products is also important in terms of reflecting the interactions. It is thought that concrete data, which cannot be reached with the research methods of social-humanities, can only be reached by archaeometric methods due to the insufficient written sources and information of the period. The presented project aims to reach new data on the role of Ayasuluk in the interactions between Asia and Europe. It covers the interdisciplinary research of 47 samples belonging to the Principalities-Early Ottoman periods, which were taken from the ceramics found during the archaeological excavations carried out between 1978-1993 under the presidency of the Ephesus Museum Directorate in the İsa Bey Bathhouse and which have not been analyzed before. Thus, after the Byzantine period, it is aimed to enable new interpretations on culture and technology transfer in connection with socio-economic changes, ceramic production and consumption. For this purpose, archaeometric analyzes of ceramics will be made by applying XRD, ICP-MS, SEM-EDS, Raman, FTIR spectroscopy and thin section petrography methods in order to find answers to questions about clay, lining, glaze properties and production technologies. The data to be obtained will be evaluated comparatively by bringing together the data previously obtained from other examples, which were included in the literature in a complex way. A digital catalogue will be formed by using the data about the production features of ceramics, origin, etc. The digital catalogue will be evaluated together with the socio-economic, urban, commercial and political developments of the region.
Çinko Borat Üretim Teknolojisinin Geliştirilmesi ve Alev Geciktirici Olarak Kullanım Alanlarının Araştırılması
Within the scope of the project, 3.5 moles of crystalline aqueous zinc borate synthesis was made in a batch and continuous system, and the zinc borate produced was used in the production of polymer composites. Pilot production of zinc borate, which was synthesized within the scope of the project and whose optimum production parameters were determined, was carried out and the optimum values of the pilot production processes were determined. Zinc borate, whose pilot production has been successfully completed, is used as a fire retardant in wood and plastics. The industrialization of the pilot product was completed by transferring the production right to the private sector.
Deniz Taşıtlarında Kullanılmak Üzere Su Temas Eden Yüzeyler İçin Çevre dostu Hallysit Kil modifiyeli Kapsülasyon Teknolojisi ile Endüstriyel Boya Geliştirme Projesi
The project aims to develop a commercially available alternative to the so-called toxic paints that are currently used in marine vehicles, using environmentally friendly chemicals with reduced emission, which can be degraded in a short time after release by both sunlight and microbial degradation. Within the scope of this project, it is aimed to formulate DCOIT biocide with holloysite nanotubes by improving epoxy coating paint properties.
Design and Synthesis of Novel Compounds Based on Dithienylpyrrole Systems Containing Azobenzene Units and Their Electrochemical and Optical Properties as well as Their Processable Conducting Polymers
Chemical Engineering
Two dithienylpyrroles based on azo dyes, namely 2,5’-dimethyl-[4-(2,5-di-thiophen-2-yl-pyrrol-1- yl)-phenyl]azobenzene (1) and 2,5’-dimethyloxy-[4-(2,5-di-thiophen-2-yl-pyrrol-1-yl)-phenyl] azobenzene (2), were synthesized and their corresponding polymers (P1 and P2) were successfully obtained via electropolymerization. The monomers have lower oxidation potentials (0.75 V and 0.80 V vs. Ag/AgCl for 1 and 2, respectively) when compared to their analogous. Both monomers exhibited photoisomerism properties under irradiation at 360 nm. During the irradiation process, for example, the color of monomer 2 changes from yellow to greenish yellow. The electroactive polymer films have well-defined and reversible redox couples with a good cycle stability in both aqueous and organic solutions. The polymer films also exhibited electrochromic behaviors; color changes from yellowish green to dark green for the P1 (λma= 435 nm and Eg= 2.31 eV) and from mustard color to green for P2 (λmax= 430 nm and Eg= 2.34 eV). Furthermore, the soluble polymers demonstrated different hues of yellow and green colors. The electrochemical and optical properties of a novel conducting copolymer called poly(3,4- ethylenedioxythiophene-co-1)-(P(EDOT-co-1)) are reported. Electrochemically synthesized P(EDOTco- 1) based on the azo dye has a well-defined and reversible redox couple (0.37 V vs. Ag/AgCl) with good cycle stability. The copolymer film exhibits high conductivity (13 S/cm) as well as electrochromic behavior (magenta when neutralized and transmissive sky blue when oxidized). Furthermore, electrooptically active copolymer film has a low band gap of 1.79 eV with a π−π* transition at 555 nm.
Design and Synthesis of Novel Compounds Based on Donor-Acceptor Systems and the Applications of Their Conducting Polymers
Chemical Engineering
Conducting polymers continues to facinate many scientists and to become the subject of many researchs in technological and academic areas. The reason for the popularity of the conducting polymers is that they trigger the development of advanced technological materials. Bearing in mind that, desired properties (processability, stability, conductivity, optical properties and so on) of these materials depend on the design and the synthesis of starting monomers. The conducting polymers obtained from the marvellous monomers can be amenable to practical use: (bio)sensors, artificial muscles, displays, electrochromic, memory and photovoltaic devices, supercapacitors, solar cells, light emitting diodes, etc. In this study, the design, synthesis and chemical and/or electrochemical polymerization of monomers (1-6) which are necessary for the generation of processable, low band gap, environmetally stable, reversible electronic and optical properties during n- and p-type dopings, fast switching of the electronic states and different hues of various colors and novel conducting polymers based on donor-acceptor-donor system. Selenium and/or oxygen atoms will be used instead of sulfur atom in benzothiodiazole unit known as acceptor unit in literature. When compared to sulfur, selenium is less electronegative and has larger size, which will obviously affect the electronic and optical properties of obtained conducting polymers. The polymers can be used as RGB (red, green, blue) displays due to green color in its neutral state and transparency in its oxidized state, as supercapacitors due to large and fast doping/dedoping capability, as solar cells due to absorption bands in the region of UV-vis, as photovoltaic devices and radar system due to the high absorption/transmittance values and the emission bands beyond NIR region, as antistatic coatings due to high transparency in the oxidized state, and as n-/p-type transistors due to their reversible and stable n- and p-type dopings. Also, some pre-works on the monomers studied in this project showed that one of the conducting polymers has green color and the modification on the monomer structure of this polymer can open a new door for the discovery of cyan color in the CMY (cyan, magenta, yellow) color system. In this project, initially the monomers (1-6) mentioned above, which is the basic unit for the polymers to be useful in the desired applications, wil be designed, synthesized and characterized. After the characterization of the monomers (by NMR, elemental analysis, FTIR, mass, UV-vis, X-Ray and voltammetric techniques), they will be polymerized into suitable medium via chemical and/or electrochemical polymerization methods. Then, the electronic and optical properties of the obtained conducting polymers will be characterized to be amenable for use in RGB displays, solar cells, supercapacitors, photovoltaic devices, transistors and so on).
Design, Synthesis and Investigation of New Nano-Dimensional Compounds
Chemical Engineering
Combination of conjugated polymers and Polyhedral oligomeric silsesquioxane (POSS) units under the same roof was taken place recently. In very few numbers of studies in the literature, it was reported that POSS units gave thermal, mechanical, optical and electrochemical stability to the condujugated polymers. In this study, in order to overcome the problems faced by the industrial field of conjugated polymers (insolubility, thermal, mechanical, optical and electrochemical instability, etc.) the inorganic (POSS) and organic (thiophene) units will be melted in the same pot for producing new POSS based polymeric materials. While the most important reason for using POSS as inorganic segment in the hybrid compound that will be synthesized is not only being nanosized but also the ability to give thermal and electrochemical stability and make the polymer soluble, 3,4-ethylenedioxythiophene and 3,4-propylenedioxythiophene, which are easily and linearly polymerized and provide to obtain electroactive polymers, will be used as organic segments. In the first stage of the project, our aim is primarily to sythesize and analyze the compounds whose structures were designed and specified and the sythetic pathways were determined. In the next step, necessary conditions to obtain electroactive polymers (homopolymer and copolymer) will be determined by investigating the electochemical and optical properties of compunds. With the realization of the project, it will be a milestone progress towards polymerization and applications (hydrophobic surfaces, electrochromic devices and polymeric light emitting diodes) of these compounds. The results of the study have the ability to be “know-how” and “patent”. Also, these results will be a data source for the future projects that can be pursued with “public” and “private” sectors. Besides, the subject of the project will be a part of a doctoral thesis, with the originality of the scope of the project and the outcomes have potential to contribute the researcher identity of Atilim University. Besides there is possibility for outcomes to become a patent, they have strong possibility to be published in prestigious journals and presented in conferences.
Design, Synthesis and Technological Applications of New Inorganic-Organic Hybrid Polymeric Materials
Chemical Engineering
In this study, a new carborane based electron donor-acceptor-donor type electroactive monomer (1) was synthesized successfully. Monomer 1 has an irreversible oxidation peak at 0.90 V (vs Ag/AgCl) and by the help of repeting cyclic voltammetry between -0.90 V and 1.00 V it was polymerized via electrochemical method. Electrochemical polymerization was performed in 0.1 M tetrabutylammonium hexafluorophosphate (TBAH) /acetonitrile and 0.1 M TBAH/DKM. Electrochemical and optical properties of the corresponding polymer (P1) were investigated. The presence of carborane unit in the polymer backbone preserve the polymer against the ambient conditions, high overoxidation potentials;therefore, the polymer become robust and preserve its properties (optical and electronic). For example, after 1000 cycles, P1 has 96% of its electroactivity. P1 having a narrow band gap like 1.64 eV also have different colors at various oxidation states: therefore, it proved that it is a promising material as an electrochromic material: light violet at neutral state and transmissive sky blue at oxidized state. This stuation was supported by the construction of an electrochromic device. Also, by the sake of comparison, the analog of monomer 1, monomer (59) and polymer (P59) were synthesized. As a result, it was proved that 1 and P1 materials are very precious materials
Design, Synthesis, Properties and Applications of Novel Processable Luminescent and Redox Active Compounds
Luminescence is the emission of electromagnetic radiation (in ultraviolet (UV), visible (Vis) or infrared (IR) regions) with no or little heat, which is produced by the transition of an electronically excited state intermediate generated by the application of an external stimuli to a lower (ground) state in order to release the excess energy. If the electronically excited state returns to the ground state from the lowest singlet excited state, it is called fluorescence or if it returns from the triplet excited state, it is called phosphorescence. The light emitted may be in UV and Vis regions as well as in IR region. Luminescent compounds have recently attracted considerable attention due to their practical applications in bio- and nanotechnological as well as materials sciences as chemosensors, electron and/or energy transfer systems, imaging agents, molecular machines and devices, molecular logic gates and so on. For that reason, the design, synthesis and characterization of novel luminescent compounds are highly concerned by first the synthetic organic chemists and as well as other communities all around the world. Herein, luminescent and redox active novel compounds (1-3) were designed, synthesized and characterized spectroscopically (UV-Vis, luminescence-fluorescence, FTIR, NMR, mass spectroscopy, combustion analysis, cyclic voltammetry). Furthermore, some applications of these novel compounds in analytical and/or material science (e.g. in forensic science, chemosensors) were investigated. In the last step of the work, these novel compounds were polymerized to give the corresponding polymeric materials, which were also characterized by spectroscopic methods.
Development of e-Applications of Statistical and Mathematical Modeling with use of Atılım mPAD for Educational Purposes
Industrial Engineering
Technology has gained a great importance in education with the progress of technology. Today, integrating the opportunities offered by technology into lectures suggests the use of technological tools and equipment in the classroom environment, especially for efficient and effective learning. Within this scope, there are e-learning studies in our country. One of these is Atılım mPAD, which is developed in our university. In this project, we aim to provide active participation of undergraduate students in classes and intensive use of technology and to integrate Atılım mPAD usage into different courses. The codes using the R software will be converted into e-applications through Atılım mPAD in order to facilitate the understanding of the subjects described in the courses such as Probability and Statistic for Engineers (IE220), Probability and Statistic I and II (IE201 ve IE202), Stochastic Models (IE324), Simulation (IE403), Statistical Applications in Industrial Engineering (IE442) given in industrial engineering department as well as Computer Applications in Business (MAN354 or ISL354), Quantitative Applications in Business (MAN122 or ISL122), Introduction to Probability and Statistic I and II (MATH291 or MATH293 and MATH292 or MATH294), Probability Theory and Statistics (MATH392) courses given in different departments. With these e-applications, it is suggested that the students increase their theoretical knowledge in the classroom environment. For this purpose, R codes will be created for each of the following subjects. These codes will be used by students during the course in Atılım mPAD environment. Calculation of basic descriptive statistics and graphical representation, various probability calculations, random number generation, hypothesis testing, regression, simulation of simple random experiments, simulation of basic queuing systems are discussed in the courses of probability and statistics. For the courses based on mathematical modeling, solutions of some optimization methods, numerical solutions of linear and nonlinear equations, interpolation and least squares method for approximation of functions will be discussed.
Dolgu Maddesi Eklenmesiyle İletken Polimer Kompozitlerinin Hazırlanması
Within the scope of the project, conductive polymer composites with uniform filler distribution were produced by mixing thermoplastic polymers and carbon-based conductive fillers in molten form. Electrical, mechanical, thermal and morphological characterization of the produced composites were carried out. In the project experiments, conductive polymer composites of different compositions were prepared by mixing high-density polyethylene (HDPE), Nylon 6, Polypropylene (PP), Poly(ethylene thermthalate) (PET) polymer matrices, carbon black and multi-walled carbon nanotube particles in a twin-screw extruder. Test specimens were prepared using pressure and injection molding devices. The electrical properties of the samples were determined using two- and four-point probe conductivity measurement methods. During the mechanical characterization processes, tensile and impact strength tests were applied to the composites. Thermal properties were examined using DSC (diffrential scanning calorimetry) device. Morphological features were examined by SEM (scanning electron microscope). The electrical conductivity of insulating thermoplastic polymers has been reduced to the semiconductor level. The lowest critical concentration value (0.25% carbon nanotube by weight) was obtained in the PET-carbon nanotube composite system. The mechanical properties of composites have changed with the addition of fillers. The best improvement in mechanical properties was observed in PP-based composites. In general, as the amount of filler in the composites increased, the percentage of crystallization decreased.
Donör-akseptör düzeninde yeni bir bileşik grubununtasarımı, sentezi ve iletken polimerlerinin uygulama alanları
Chemical Engineering
Donor-acceptor-based electrochromic polymers, unknown in the literature, were synthesized and the optical and electrochemical properties of these materials were examined. In this study, in which both the donor effect and the acceptor effect were examined, soluble and processable materials with colors such as green, blue, cyan and black, although very few in number in the literature, were synthesized which are indispensable for their application areas. Necessary characterization studies have been carried out for the anticipated technological applications.
Elektrikli bir araç için yüksek verimli güç aktarma organlarının tasarım ve imalatı
Automotive Engineering
As a result of increasing environmental pollution and inefficient use of resources, global warming is among the most serious problems today. Studies carried out to solve this situation envisage the use of alternative propulsion systems and energy sources in vehicles. In this context, the main goal of this project is the conceptual design, manufacturing and testing of devices called electric motor, charging unit, battery pack and battery management system, which are the four main parts of an electric vehicle. An efficiency target at the IE4 level was determined in the conceptual design of the devices within the system, and the minimum conversion efficiency was determined as 90% according to this standard. While a brushless permanent magnet synchronous motor model was preferred in the motor design, a forward power design with two switches in the charging unit topology was preferred. Battery management system and packaging issues were studied together. In this way, cell voltages, temperatures, cooling method and current protection methods were studied in an integrated manner. The conceptual design and production of the products within the project have been completed and the relevant tests have been carried out. There are generally two methods of engine design in the literature. These are analytical and numerical approaches, and when the necessary processes are followed, the outputs of both methods should be the same. Therefore, both methods were used in this design study. Excel software was used for analytical calculations, and Ansys Rmxprt and 2D Maxwell software was used for numerical calculations.
Elektrokatalitik amonyak üretimi için Ce katkılı LaFeO3 perovskit malzemesinin geliştirilmesi
Metallurgical and Materials Engineering
Ammonia is the second most produced chemical worldwide, which has a wide range of uses in the production of cleaning products, nitrogen-containing chemicals and explosives in sectors such as energy, cooling, textile, fertilizer, medicine. Also, a good source of hydrogen, ammonia has the potential to play an important role in the future hydrogen economy. Ammonia production has thermodynamic limitations and is commercially produced by the Haber-Bosh process at high pressure and high temperature. Electrocatalytic ammonia production processes eliminate thermodynamic limitations and provide ammonia production at atmospheric pressure. Studies on ammonia production by using solid oxide conductors are still ongoing, and research using oxide conducting electrolytes are limited. Ammonia production in oxide conducting electrolytes provides thermodynamically an advantage over the Haber-Bosh process, but the cathode catalyst is also very important for the development of the membrane electrode system. The catalyst to be used in oxide conducting electrolyte is expected to be active for ammonia production, to have high ionic and electrical conductivity, and to have high strength and stability under operating conditions. In addition, the compatibility of the electrolyte material and the thermal expansion coefficient of the catalyst to be used in the system is another important parameter. Perovskite materials have the potential to have these properties, and the properties of perovskites can be improved by adding various metals to their structure. Electrocatalytic studies in the literatüre widely use yttria stabilized zirconia (YSZ) stabilized, which can easily be obtained commercially, as the solid oxide electrolyte material. Within the scope of the proposed project, LaFeO3 that has thermal expansion coefficient close to YSZ will be synthesized and the effectof doping with Ce in different ratios on the katalyst properties will be examined by characterization methods. There are currently no studies in literatüre that use of La1-xCexFeO3 cathode catalyst for the production of ammonia in oxide conducting electrolyte system. As a result of the study, the development of an active and selective cathode catalyst with high ionic and electrical conductivity, compatible with YSZ electrolyte, for the production of ammonia using solid oxide electrolyte will contribute to the literature. Outcomes of this project are planned to be published in national/ international journals and/or presented in national/international conferences.
Erken Dönem Ebeveynlik Desteği: Anne Duyarlığı ve Güvenli Bağlanmayı Arttırmaya Yönelik Müdahale Programı Uygulaması
Previous research has shown that caregiving behaviors that are ‘sensitive’ can be increased through positive feedback based systematic interventions. This project aims to adapt, implement, and empirically test the effectiveness of the VIPP: Video-Feedback Intervention to Promote Positive Parenting (Juffer et. A., 1993; 2008), which has been shown to be highly effective in a vast number of studies in enhancing positive parenting practices and maternal sensitivity in the Western cultures. First, interveners were certified through training and the translation of the manual, tests and other related documents were completed, and then the research was conducted in two major cities of Turkey, Ankara (n = 76) and İstanbul (n = 27) for two years. Mothers (N = 103) were coming from low-SES backgrounds. Using a randomized control trial design, mother-child dyads were randomly assigned to the intervention (n = 63) and control (n = 40) groups. A number of video recordings, observational assessments, and self-report measures were employed in the periods of pretest, posttest, and follow-up. Maternal sensitivity and child’s attachment security were assessed through observation-based measures. Mothers were also asked to complete a set of self-report measures assessing child temperament and psychological adjustment as well as their parental stress, relationship satisfaction, and own attachment orientations. Results have shown that mothers and children in the intervention and control groups were not significantly different in terms of their basic characteristics in the pretest. GLM Repeated Measures analyses using 2 factor (intervention X control) X 3 time (pretest, posttest and follow-up) yielded significant differences on three out of 10 main outcome variables. Specifically, interaction effects were significant on Ainsworth Sensitivity Scale, self-reported maternal attitudes toward sensitivity, and marital satisfaction, indicating that mothers’ sensitivity and related attitudes were positively changed and their marital satisfaction were enhanced following the intervention. Additional analyses that were conducted comparing the pretest and posttest as well as pretest and follow-up measures within the control and the intervention groups separately, suggested that the levels of maternal sensitivity measured by the MBQS, and the child attachment security measured by the AQS have increased in the intervention group in the posttest and follow-up periods. Moreover, children’s internalization problems significantly decreased in the intervention group. Finally, to better understand the effectiveness of the VIPP, potential risk groups (High Risk vs. Low Risk) were created using the median split on a number of variables, such as the level of psychological symptoms and attachment avoidance. The findings suggested that compared to the control group, mothers who were categorized in the high-risk groups benefited more from the intervention. Overall, xi results have demonstrated that the effectiveness of the VIPP application had a moderate effect size and may have higher effect size if it is applied to the mothers from disadvantaged groups. The limitations of the study, suggestions, and directions for both future interveners and researchers were discussed. In sum, within the scope of the current project, an effective intervention instrument targeting to enhance maternal sensitivity and child security in the early years of children in Turkey has been adapted and validated as well as a number of measures were provided for the future interveners and researchers in this arena.
Geri Kazanılmış PET/PEN Karışımlarının Özelliklerinin Farklı Zincir Uzatıcılar Kullanımı ile İyileştirilmesi
PET/PEN mixtures have been studied extensively in the literature for the production of materials with economically viable and superior properties. However, as it is known, PET and PEN are not compatible polymers with each other and various methods are used to harmonize these mixtures. One of these methods is the transesterification reaction of PET and PEN during mixing from the melt. However, during transesterification, the molecular weight of polymers decreases by exposure to thermal, hydrolytic and oxidative degradation. Adding chain-extending chemicals to the mix to reduce this effect is one of the methods used. In this study, the effect of 1, 4 phenylene bis, oxazoline (PBO), tri phenyl phosphate (TPP) and 1, 4 phenyl diisocyanate (PDI) chain extenders on the properties of PET/PEN mixtures prepared with recycled PET (r-PET) was investigated. First of all, the effect of PEN amount on r-PET-PEN mixtures was examined and 70/30% r-PET-PEN mixture was determined as control sample. Later, chain extenders of 0.5, 1.0 and 2.0 wt.% were added to this composition. Tensile and impact tests were performed to examine the effect of chain extenders on the mechanical properties of r-PET-PEN mixtures. Differential scanning calorimetry (DSC) and Dynamic Mechanical Analysis (DMA) were used to determine the glass transition temperature. The level of the transesterification reaction was calculated using the Nuclear Magnetic Resonance Spectroscopy (H1-NMR) technique. In the light of all these data, it was determined that PDI was the most suitable chain extender for r-PET-PEN mixtures, while TPP was not a suitable chain extender for this mixture.
Kimyasal ışıl-ışıma özelliğine sahip heterosiklik monomerlerin ve iletken polimerlerinin sentezlenmesi ve uygulama alanları
Chemical Engineering
A new group of compounds with chemiluminescence properties were designed and synthesized, and after their identification, their behavior towards metal ions was examined. Some of these compounds, which are likely to be used in both analytical chemistry and forensic science, have been successfully polymerized by electrochemical methods and their optical and electrochemical properties have been identified.
Kişiselleştirilmiş ve Modüler Sosyal Robot Tasarımı İçin Yazılım Platformu Geliştirilmesi ve Uygulanması
Mechatronics Engineering
In this project, it is aimed to develop an interactive and conceptual design platform that can be used to develop personalized and modular social robots with the participatory design method and to apply it to physical robot models that serve as technology demonstrations.
Kişiselleştirilmiş ve modüler sosyal robot tasarımı için yazılım platformu geliştirilmesi ve uygulanması
Mechatronics Engineering
The purpose of this project is to develop an interactive software platform to be used for conceptual design of personalized and modular social robots, using participatory design. The platform will be implemented so as to develop a physical social robot model as a technology demonstrator.

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