Poli(metil metakrilat) ile Poli(1,3-difenil-1H-pirazol-5-il metakrilat)’ın Blendleşmesi: Optik Özelliklerinin Araştırılması

Year 2022, Volume: 12 Issue: 2, 177 - 192, 30.12.2022

Adnan KURT Murat KOCA

https://doi.org/10.37094/adyujsci.1110956

Abstract

Mevcut çalışmada, pirazol türevli bir polimer olan poli(1,3-difenil-1H-pirazol-5-il metakrilat) ve poli(metil metakrilat) içeren yeni bir blend polimer, çözelti karıştırma yöntemiyle hazırlandı. Hazırlanan blend polimer FTIR ve 1H-NMR teknikleri ile spektral olarak karakterize edildi. TGA analizi blend polimerin 275.4 °C’ye kadar stabil olduğunu gösterdi. Spin kaplama tekniği kullanılarak blend polimer ince filmi hazırlandı. UV ölçümleri dalga boyunun (300-700 nm) bir fonksiyonu olarak kaydedildi. Optik ve dağılım parametreleri detaylı olarak rapor edildi. Artan dalga boyuna bağlı olarak geçirgenlik artarken yansıma azaldı. Geçirgenlik değeri 700 nm’de %97,55 olarak ölçüldü, bu da blend polimerin oldukça geçirgen olduğu anlamına gelmektedir. Kırılma indisi değeri 700 nm’de 1.37 olarak hesaplandı. Urbach enerjisi (Eu) ve optik bant aralığı sabiti (Eg) sırasıyla 0.831 eV ve 3.737 eV olarak belirlendi. Polimerin elektronik geçiş türünün dolaylı izinli geçiş olduğu görüldü.

Blending of Poly(methyl methacrylate) with Poly(1,3-diphenyl-1H-pyrazol-5-yl methacrylate): Investigation of its Optical Properties

Abstract

In the present study, a new blend polymer consisting of a pyrazole-derived polymer poly(1,3-diphenyl-1H-pyrazol-5-yl methacrylate) and poly(methyl methacrylate) was prepared with solution mixing method. The blend polymer was spectrally characterized with FTIR and 1H- NMR techniques. TGA analysis showed that the blend polymer was stable up to 275.4 °C. A thin film of blend polymer was prepared by using spin coating technique. The UV measurements were obtained as a function of wavelength (300 – 700 nm). The optical and dispersion parameters were reported in detail. Transmittance was increased depending on the increasing wavelength whereas the reflectance decreased. The Transmittance value at 700 nm was measured as 97.55%, meaning the blend polymer was transparent. The refractive index at 700 nm was 1.37. The Urbach energy (Eu) and the optical band gap constant (Eg) were calculated to be 0.831 eV and 3.737 eV, respectively. The type of electronic transitions for polymer was determined as indirect allowed transition.

Keywords

Blend polymer, Pyrazole, Methyl methacrylate, UV absorptions, Optical properties, Dispersion parameters, Blend polimer; Pirazol; Metil metakrilat; UV absorpsiyon; Optik özellikler; Dispersiyon parametreleri.

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