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Subject: poly(epsilon-caprolactone)

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Now showing 1 - 4 of 4
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    Article
    Citation - WoS: 23
    Citation - Scopus: 25
    Comparison of Cellular Proliferation on Dense and Porous Pcl Scaffolds
    (Ios Press, 2008) Sasmazel, Hilal Tuerkoglu; Gumusderelioglu, Menemse; Gurpinar, Aylin; Onur, Mehmet Ali
    In this contribution, PCL (poly-e caprolactone) scaffolds were prepared by solvent-casting/particle-leaching technique in the presence of two pore formers, PEG(4000) or sucrose molecules in different quantities (0, 10, 20, 30, 40, 50, 55 w/w% PEG(4000)/PCL; 10, 20 w/w% Sucrose/ PCL). The surface and bulk properties of the resulting scaffolds were studied by SEM, DSC and FTIR. SEM photographs showed that, macroporosity was obtained in the PCL structures prepared with sucrose crystals while microporous structure was obtained in the presence of PEG(4000) molecules. Average pore diameters calculated from SEM photographs were 40.1 and 191.2 mu m for 40% PEG(4000)/PCL and 10% Sucrose/PCL scaffolds, respectively. The DSC and FTIR results confirmed that there is no any interaction between pore formers and PCL during structural formation, and both pore formers, PEG(4000) and sucrose, remained independently in the scaffolds. L929 mouse fibroblast cells were seeded onto PCL structures and maintained during 7 days to evaluate cell proliferation. Cell culture results showed that, 10% Sucrose/ PCL scaffold was the most promising substrate for L929 cell growth due to 3-D architecture and macroporous structure of the scaffold.
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    Article
    Citation - WoS: 25
    Citation - Scopus: 24
    Preparation of Electrospun Pcl-Based Scaffolds by Mono/Multi-functionalized Go
    (Iop Publishing Ltd, 2019) Basar, Ahmet Ozan; Sadhu, Veera; Sasmazel, Hilal Turkoglu
    In the present study, sythetic biodegradable polymer poly(epsilon-caprolactone) (PCL) and graphene oxide (GO) were combined together to prepare 3D, composite tissue scaffolds (PCL/GO scaffolds) by using electrospinning technique. Also, the influence of Gly-Arg-Gly-Asp-Ser-Pro (GRGDSP) and/or thiophene (Th) modified GO on the composite PCL/GO mats (PCL/GO, PCL/GO-GRGDSP, PCL/ GO-Th, PCL/GO-GRGDSP-Th) was further investigated. Characteristic examinations of the scaffolds were carried out by scanning electron microscope (SEM), contact angle (CA) measurements, x-ray photoelectron spectroscopy, TGA, electrical conductivity tests, phosphate buffer saline absorption and shrinkage tests and mechanical tests. All of the scaffolds were exhibited suitable bead free and uniform morphology according to SEM images. With the addition of GO, better hydrophilicity and a slight CA decrease (similar to 5 degrees) for the PCL/GO scaffolds were observed. Mechanical properties were reinforced drastically with the addition and well-dispersion of GO into PCL matrix. The incorporation of PCL and GO exhibited enhanced electrical conductivity and the highest value was found for PCL/GO-GRGDSP-Th (2%) as 15.06 mu S cm(-1). The MG-63 osteoblast cell culture studies (MTT assay, ALP activity, Alizarin-Red staining, fluorescence and SEM analyses) showed that PCL/GO-GRGDSP-Th (1%) scaffolds exhibited the highest biocompatibility performance (1.87 fold MTT absorbance value comparing with neat PCL) due to the advanced properties of GO and the biological interfaces.
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    Article
    Citation - WoS: 17
    Citation - Scopus: 18
    Poly(ε-Caprolactone) Composites Containing Gentamicin-Loaded Β-Tricalcium Phosphate/Gelatin Microspheres as Bone Tissue Supports
    (Wiley, 2013) Sezer, Umran Aydemir; Aksoy, Eda Ayse; Hasirci, Vasif; Hasirci, Nesrin
    In this work, novel antibacterial composites were prepared by using poly(epsilon-caprolactone) (PCL) as the main matrix material, and gentamicin-loaded microspheres composed of beta-tricalcium phosphate (beta-TCP) and gelatin. The purpose is to use this biodegradable material as a support for bone tissue. This composite system is expected to enhance bone regeneration by the presence of beta-TCP and prevent a possible infection that might occur around the defected bone region by the release of gentamicin. The effects of the ratio of the beta-TCP/gelatin microspheres on the morphological, mechanical, and degradation properties of composite films as well as in vitro antibiotic release and antibacterial activities against Escherichia coli and Staphylococcus aureus were investigated. The results showed that the composites of PCL and beta-TCP/gelatin microspheres had antibacterial activities for both bacteria. (C) 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013
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    Conference Object
    Citation - WoS: 1
    Effects of Functional Groups, Biosignal Molecules and Nanotopography on Cellular Proliferation
    (Springer, 2009) Sasmazel, H. T.; Manolache, S.; Guemuesderelioglu, M.
    The aim Of this Study is the development of novel cell Support materials for fibroblast cell cultivation by using low-pressure plasma assisted treatment. Poly(epsilon-caprolactone) (PCL) membranes were prepared by solvent-casting technique. The plasma assisted treatment was focused oil generating a nano-topography and obtaining COOH functionalities oil the Surface of the membranes. The immobilization of biomolecules onto the PCL membranes was realized after the plasma treatment, The membranes prepared were characterized by various methods before and after the biomodification. L929 mouse fibroblasts were used for cell Culture evaluation. The prominent roles Of Surface nano-topography and carboxylic groups generated by the plasma in obtaining better cell growth on PCL Surfaces are highlighted in this study.