Biyolojik Kaynaklı Monolitlerin Sentezi ve Karakterizasyonu

Year 2021, Volume: 8 Issue: 2, 826 - 832, 31.12.2021

Burcu Kekevi

https://doi.org/10.35193/bseufbd.963141

Cited By: 1

Abstract

Kolloidal şablonlama, iyi tanımlanmış iki aşamalı gözenekliliğe ve değişen morfolojiye sahip makro gözenekli polimer monolitleri hazırlamak için kullanılan çok yönlü ve pratik bir yöntemdir. Bu yöntemle sentezlenen monolitler, avantajlı morfolojileri nedeniyle birçok alanda uygulama bulabilirler. Bu çalışmada, sürdürülebilir makro gözenekli polimer monolitlerin geliştirilmesi için yenilenebilir bir monomer kullanılmıştır. Bu amaçla, yenilenebilir monomer karışımının kopolimerizasyonu kolloidal sistemde esnek bir diakrilat çapraz bağlayıcı kullanılarak sağlandı. Monomer yapısının nihai malzeme özellikleri üzerindeki etkisini araştırmak için d-limonen eşdeğer oranlarda etilen glikol dimetakrilat (EGDMA) ile kopolimerize edildi. Son olarak, elde edilen sürdürülebilir makro gözenekli polimer monolitlerin termal ve morfolojik özellikleri sırasıyla Diferansiyel Taramalı Kalorimetri (DSC), Termal Gravimetrik Analiz (TGA) ve Taramalı Elektron Mikroskobu (SEM) ile araştırıldı. Ek olarak, elde edilen monolitik malzemelerin spesifik yüzey alanı, numunelerin N2 izotermlerine Brunauer–Emmet–Teller (BET) denklemi uygulanarak N2 adsorpsiyon/desorpsiyon analizleri ile ölçülmüştür. Bu yenilenebilir monomerin porojen etkisinden dolayı d-limonen varlığının olağanüstü tek delikli halka morfolojisine yol açtığı belirlendi.

Keywords

Kolloidal Şablonlama, Terpen, D-Limonen, Tek Delikli Halka Morfoloji

Synthesis and Characterization of Bio-Derived Monoliths

Abstract

Colloidal templating is a versatile and practical method to prepare macroporous polymer monoliths with a well-defined two-stage porosity and tuneable morphology. Due to their advantageous morphology colloidal templated monoliths can find application in many areas. In this study, a renewable monomer was used for the development of sustainable macroporous polymer monoliths. Copolymerization of a renewable monomer mixture in a colloidal system was achieved by using a flexible diacrylate crosslinker. For this purpose, d-limonene was copolymerized with ethylene glycol dimetacrylate (EGDMA) in equivalent ratios to investigate the effect of monomer structure on the final material properties. In the end, thermal and morphological properties of the resulting sustainable macroporous polymer monoliths were investigated by Differential Scanning Calorimetry (DSC), Thermal Gravimetric Analysis (TGA) and Scanning Electron Microscopy (SEM), respectively. Additionally, the specific surface area of the obtained monolithic materials was measured through N2 adsorption/desorption analyses by applying Brunauer–Emmet–Teller (BET) equation to the N2 isotherms of the samples. It was determined that the presence of d-limonene led to an extraordinary one-hollowed ring morphology due to the porogen effect of this renewable monomer.

Keywords

Colloidal Templating, Terpene, D-Limonene, One-Hollowed Ring Morphology

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