Nano SiO2 katkılı polihidroksietilmetakrilat (PHEMA) filmlerinin mekanik, termal ve biyobozunur davranış özellikleri

Öz

Bu çalışmada, polihidroksi etil metakrilat (PHEMA) ile nano-SiO2’nin kimyasal modifikasyonu gerçekleştirilerek nanokompozit malzemelerin hazırlanması gerçekleştirilmiştir. Çalışma kapsamında; PHEMA tabanlı nano-SiO2 katkılı nanokompozit hidrojeller, radikalik başlatıcı ve çapraz bağlayıcı eşliğinde in-situ (yerinde) serbest radikal polimerleştirme tekniği ile üretilmiştir. Katalizör olarak N,N,N′,N′-tetrametil etilendiamin (TEMED) kullanılmıştır. Seçilen takviye malzemesi (SiO2) polimer (PHEMA) ile etkileşimi ve yapısal özelliklerinin uygulama alanına yönelik geliştirilmesi sağlanmıştır. Elde edilen malzemelerin kimyasal yapısı, morfoloji özellikleri, mekanik, termal ve biyobozunur davranışları incelenmiştir. Filmlerin üzerine katkılanan nano takviye malzemesinin; mekanik dayanımı artırdığı, biyobozunurluk özelliğini iyileştirdiği ve ısıl dayanımını en fazla miktarda nano SiO2 ilavesi olan filmde 4 °C artırdığı gözlemlenmiştir.

Anahtar Kelimeler

• PHEMA
• Polimer
• Nano SiO2
• Nanokompozit

Mechanical, thermal and biodegradable behavior properties of nano SiO2 doped polyhydroxyethylmethacrylate (PHEMA) films

Abstract

In this study, nanocomposite materials were prepared by chemical modification of polyhydroxy ethyl methacrylate (PHEMA) and nano-SiO2. Scope of work; PHEMA-based nano-SiO2 doped nanocomposite hydrogels were produced by in-situ free radical polymerization technique with radical initiator and crosslinker. N,N,N′,N′-tetramethyl ethylenediamine (TEMED) was used as a catalyst. The interaction of the selected reinforcement material (SiO2) with the polymer (PHEMA) and the development of its structural properties for the application area are provided. The chemical structure, morphology, mechanical, thermal and biodegradable behavior of the obtained materials were investigated. It was observed that the nano reinforcement material doped on the films increased the mechanical strength, improved the biodegradable property and increased the thermal stability by 4 °C in the film with the highest amount of nano SiO2 addition.

Keywords

• PHEMA
• Polymer
• Nano SiO2
• Nanocomposite

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