Karışmaz PMMA/PS harmanlarının optik özelliklerine uyumlulaştırıcı etkisi

Karışmayan polimetil metakrilat/polistiren (PMMA/PS) harmanları değişik maleik anhidrit-stiren-metil metakrilat (MAStMMA) uyumlaştırıcı oranı (0, 2, 4, 6, 8 ve 10) eklenerek çözeltiden döküm yoluyla elde edilmiştir. Spektral sonuçlar, kırılma indisi (n), sönüm katsayısı (k) ve absorpsiyon katsayısı (µ) gibi optik sabitlerin terpolimer bazlı uyumlaştırıcı ilavesiyle arttığını göstermiştir. Diğer yandan optik enerji boşluğu Eg, anılan optik sabitlere göre zıt bir eğilim göstermiştir. Gözlenen en düşük enerji boşluğu %8 ila %10 uyumlaştırıcı oranı arasında belirlenmiştir.

Anahtar Kelimeler:

uyumlaştırma, maleik anhidrit, optik sabitler, polimer harmanlama

Compatibilizer effect on optical properties of immiscible PMMA/PS blends

Immıscible polymethyl methacrylate/polystyrene (PMMA/PS) mixtures with various maleic anhydride-styrene-methyl methacrylate (MAStMMA) compatibilizer ratio (0, 2, 4, 6, 8 and 10) % were obtained by solution casting. The spectral results showed that the optical constants such as refractive index (n), extinction coefficient (k) and absorption coefficient increase with increasing terpolymer compatibilizer ratio. On the other hand, the optical energy gap Eg showed an inverse trend to concerning optical constants. The lowest observed energy gap was between 8 and 10 % compatibilizer ratio.

Keywords:

compatibilization, maleic anhydride, optical constants, polymer blending,

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