Yüksek İç Fazlı Emülsiyon Kalıplama ile Metakrilat Esaslı Küresel Polimerlerin Hazırlanması

Year 2020, , 141 - 151, 28.06.2020

Burcu Kekevi , Emine Hilal Mert , Funda Çira

https://doi.org/10.35193/bseufbd.665236

Abstract

Epoksi fonksiyonel gruplara sahip gözenekli polimer küreleri, glisidil metakrilat (GMA) ile esnek gruplara sahip 1,3-bütandiol dimetakrilat (BDDMA) karışımından oluşan monomer bileşimi içinde sulu iç faz çözeltisinin dağıtılması ile elde edilen öncü konsantre emülsiyon kalıpları kullanılarak sentezlendi. Bu amaçla, sulu pullulan çözeltilerinin iç faz olarak kullanılması ile GMA ve BDDMA’nın yüksek iç fazlı emülsiyonları (high internal phase emulsions, HIPEs) hazırlandı. Polimerleştirme adımı, öncü HIPE’lerin sekonder bir sulu ortamda dağıtılması ile elde edilen su/yağ/su (w/o/w) sistemleri içerisinde gerçekleştirildi. Öncü emülsiyon kalıplarının hazırlanmasında farklı konsantrasyonlardaki pullulan çözeltileri iç faz olarak kullanılarak, her bir bağımsız polimer fazın veya ağın kendi özelliklerini koruduğu ve birbirleri ile sinerjik bir etkileşim içinde olduğu yarı-geçişimli bir polimerik ağ yapısı elde edildi. Elde edilen polimer (poliHIPE) kürelerinin morfolojik özellikleri mikroskobik görüntüleme teknikleri ile incelendi. Spesifik yüzey alanları ise elde edilen kürelerin N₂ adsorpsiyon/desorpsiyon izotermlerine Brunauer–Emmett–Teller (BET) denklemi uygulanarak hesaplandı. 

Keywords

Emülsiyon kalıplama, Yüksek iç fazlı emülsiyon, poliHIPE küreleri

Supporting Institution

TÜBİTAK, Yalova Üniversitesi Bilimsel Araştırma Projeleri Koordinasyon Birimi

Project Number

113Z465, 2013/YL/015

Thanks

Çalışmamıza sağladıkları destekten ötürü TÜBİTAK’a (TÜBİTAK Proje No: 113Z465) ve Yalova Üniversitesi Bilimsel Araştırma Projeleri Koordinasyon Birimi’ne (Proje No: 2013/YL/015)teşekkür ederiz

Preparation of Methacrylate Based Spherical Polymers via High Internal Phase Emulsion Templating

Abstract

Epoxy functional spherical polymer beads were synthesized by using precursor concentrated emulsions templates obtained by dispersing aqueous internal phase solution in the monomer mixture composed of glycidyl methacrylate (GMA) and 1,3-butandiol dimethacrylate having flexible groups. For this purpose, high internal phase emulsions (HIPEs) of GMA and BDDMA were obtained with the use of aqueous pullulan solutions as the internal phase. Polymerization step was achieved within the water/oil/water (w/o/w) systems that were prepared by dispersing precursor HIPEs in a secondary aqueous medium. On the other hand, by using aqueous pullulan solutions during the preparation of precursor emulsion templates, a semi-interpenetrating polymer network structure in which each individual phase or network retains their individual properties and causes synergistic interaction, was obtained. The morphological properties of the resulting polymer (polyHIPE) beads were investigated by using microscopic imaging techniques. The specific surface areas were calculated by applying Brunauer–Emmett–Teller (BET) equation to the N₂ adsorption/desertion isotherms of the resulting beads.

Keywords

Emulsion templating, High internal phase emulsion, polyHIPE beads

Project Number

113Z465, 2013/YL/015

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