Enjekte edilebilir poli (Metil metakrilat) (PMMA) zirkonya kompozitlerin hazırlanması ve karakterizasyonu
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2020
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Çalışmanın amacı, üç boyutlu (3B) yazıcı ile biyomateryaller üretmektir. PMMA/Zirkonya biyomateryalleri, ağırlıkça farklı zirkonya tozlarının PMMA solüsyonlarına ısıtma ocağı üzerinde manyetik balık ile 75 ˚C karıştırılması ile üretilmiştir. Hazırlanan malzemeler şırınga ile istenilen şekle sokulmuştur ve farklı sinterleme sıcaklıkları ile sinterlenmiştir. PMMA örneklerinin kimyasal yapı analizi ATR-FTIR ile tayin edilmiştir. Hazırlanan örneklerin morfolojik özellikleri taramalı elektron mikroskobu (SEM) ile incelenmiştir. Kristalinite ve faz değişimleri X-ışını Kırınım (XRD) ile tayin edilmiştir. Mekanik testler ise sıkıştırma dayanımı testleri ile gerçekleştirilmiştir. ATR-FTIR analizi sonuçlarına göre PMMA ~ 70% oranında polimer dönüşümü göstermiştir. SEM görüntülerine göre; porozite, PMMA miktarı ile artma, sinterleme sıcaklığı ile ise azalma göstermiştir. Sinterleme sıcaklığına bağlı olarak tanelerde (grain) topaklanma görülmüştür. XRD sonuçlarına göre, sinterleme sıcaklığındaki artış tetragonal fazın yüzde hacminde düşüşe sebep olmuş; malzemenin kristalit boyutunu ise artırmıştır. Mekanik testler sonucunda ise, sıkıştırma dayanımı; sinterleme sıcaklığı ile birlikte artmış, PMMA miktarı ile azalmıştır. Anahtar kelimeler: Biyomalzemeler, üç boyutlu (3B) baskı, PMMA, Zirkonya
The purpose of this study is to fabricate 3D printed biomaterials. PMMA/Zirconia biomaterials were prepared by the addition of different percent weight of Zirconia powder to PMMA solution on a hot plate at 75 ˚C with continuous magnetic stirring until the stirrer stopped. The prepared sample was injected by using a syringe to get the desirable shape. Then it was sintered at different sintering temperature. Characterization of synthesized PMMA was performed by ATR-FTIR. Characterization of samples morphology were carried out by Scanning Electron Microscopy (SEM). Crystallinity and phase transformation were investigated by X-ray Diffraction (XRD). The mechanical test was performed by applying compressive strength test. According to ATR-FTIR test, synthesized PMMA showed a degree of conversion ̴ 70%. SEM micrographs showed that porosity increases with PMMA content and decreases with the increase of sintering temperature. Particles size was different, as it refers to grains agglomeration due to sintering temperature. XRD patterns showed that the percentage volume of tetragonal phase decreases with the increase of sintering temperature and crystallite size increases with the sintering temperature. Compressive strength test showed that the compressive strength increases with the increase of sintering temperature and decreases with the increase of PMMA amount. Key words: Biomaterials, 3D Printing, PMMA, Zirconia
The purpose of this study is to fabricate 3D printed biomaterials. PMMA/Zirconia biomaterials were prepared by the addition of different percent weight of Zirconia powder to PMMA solution on a hot plate at 75 ˚C with continuous magnetic stirring until the stirrer stopped. The prepared sample was injected by using a syringe to get the desirable shape. Then it was sintered at different sintering temperature. Characterization of synthesized PMMA was performed by ATR-FTIR. Characterization of samples morphology were carried out by Scanning Electron Microscopy (SEM). Crystallinity and phase transformation were investigated by X-ray Diffraction (XRD). The mechanical test was performed by applying compressive strength test. According to ATR-FTIR test, synthesized PMMA showed a degree of conversion ̴ 70%. SEM micrographs showed that porosity increases with PMMA content and decreases with the increase of sintering temperature. Particles size was different, as it refers to grains agglomeration due to sintering temperature. XRD patterns showed that the percentage volume of tetragonal phase decreases with the increase of sintering temperature and crystallite size increases with the sintering temperature. Compressive strength test showed that the compressive strength increases with the increase of sintering temperature and decreases with the increase of PMMA amount. Key words: Biomaterials, 3D Printing, PMMA, Zirconia
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Metalurji Mühendisliği, Metallurgical Engineering
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