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Journals / Kırklareli Üniversitesi Mühendislik ve Fen Bilimleri Dergisi / 2025 / Cilt: 11 Sayı: 2

Influence of Graft Copolymerization Initiators on the Morphology and Wettability of VA/CG-g-EGD Membranes

Aşı Kopolimerizasyon Başlatıcılarının VA/CG-g-EGD Membranlarının Morfolojisi ve Islatılabilirliği Üzerindeki Etkisi

Gülcan Geyik(HİTİT ÜNİVERSİTESİ, ALACA AVNİ ÇELİK MESLEK YÜKSEKOKULU)0000-0003-4558-9288
Fatma Kurşun Baysak(KIRKLARELİ ÜNİVERSİTESİ)0000-0003-0212-0973
Pages
304–319
Publication Date
2025-12-31
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

The improved surface integrity and morphological stability make VA/CG-g-EGD membranes promising candidates for pervaporation-based separations and drug-delivery applications requiring selective permeability and mechanical durability.

📌 3 Key Takeaways

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Objective & Hypothesis:The development of hybrid polymeric membranes with tunable surface properties is crucial for advanced separation and controlled release technologies.
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Key Findings & Data:In this study, poly(vinyl alcohol)/(κ-carrageenan-graft-ethylene glycol dimethacrylate) (VA/CG-g-EGD) membranes were prepared by blending poly(vinyl alcohol) (VA) with κ-carrageenan-graft-ethylene glycol dimethacrylate (CG-g-EGD) copolymers synthesized using different initiators: cerium ammonium nitrate (CAN), ammonium persulfate (APS), and benzoyl peroxide (BPO).
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Conclusion & Impact:The improved surface integrity and morphological stability make VA/CG-g-EGD membranes promising candidates for pervaporation-based separations and drug-delivery applications requiring selective permeability and mechanical durability.
🔬Design:Araştırma Makalesi
📍Scope:Comprehensive Sample
⚙️Variables:Atomik kuvvet mikroskobu · temas açısı · poli(vinil alkol)

Abstract

The development of hybrid polymeric membranes with tunable surface properties is crucial for advanced separation and controlled release technologies. In this study, poly(vinyl alcohol)/(κ-carrageenan-graft-ethylene glycol dimethacrylate) (VA/CG-g-EGD) membranes were prepared by blending poly(vinyl alcohol) (VA) with κ-carrageenan-graft-ethylene glycol dimethacrylate (CG-g-EGD) copolymers synthesized using different initiators: cerium ammonium nitrate (CAN), ammonium persulfate (APS), and benzoyl peroxide (BPO). The aim was to examine how the initiator type influences grafting efficiency and, consequently, the morphology and surface characteristics of the membranes. AFM and contact angle analyses revealed that the initiator type significantly affected surface roughness and wettability. Among the initiators, BPO produced the most uniform surface, whereas CAN yielded a rougher morphology with lower grafting efficiency. Compared to pristine VA membranes, the VA/CG-g-EGD membranes exhibited smoother, more stable surfaces with a tunable hydrophilic–hydrophobic balance, confirming the successful grafting. These findings demonstrate that controlling grafting parameters effectively enhances membrane surface performance. The improved surface integrity and morphological stability make VA/CG-g-EGD membranes promising candidates for pervaporation-based separations and drug-delivery applications requiring selective permeability and mechanical durability.

Özet

Ayarlanabilir yüzey özelliklerine sahip hibrit polimerik membranların geliştirilmesi, ileri düzey ayırma ve kontrollü salım teknolojileri açısından büyük önem taşımaktadır. Bu çalışmada, farklı başlatıcılar olan seryum amonyum nitrat (CAN), amonyum persülfat (APS) ve benzoil peroksit (BPO) kullanılarak κ-karragenan (CG) üzerine sentezlenen κ-karragenan-aşı-etilen glikol dimetakrilat (CG-g-EGD) kopolimerleri, poli(vinil alkol) (VA) ile karıştırılarak poli(vinil alkol)/(κ-karragenan-greft-etilen glikol dimetakrilat (VA/CG-g-EGD) membranları hazırlanmıştır. Çalışmanın amacı, başlatıcı tipinin aşı verimliliğini ve buna bağlı olarak elde edilen membranların morfolojik ve yüzey özelliklerini nasıl etkilediğini incelemektir. AFM ve temas açısı analizleri, başlatıcı türünün yüzey pürüzlülüğü ve ıslanabilirlik üzerinde önemli bir etkiye sahip olduğunu göstermiştir. Başlatıcılar arasında, BPO en homojen yüzey yapısını oluştururken, CAN daha düşük aşı verimliliğine sahip daha pürüzlü bir morfoloji üretmiştir. Saf VA membranlara kıyasla, sentezlenen VA/CG-g-EGD membranları daha düzgün, daha kararlı yüzeyler ve ayarlanabilir hidrofilik–hidrofobik denge sergileyerek başarılı aşı polimerizasyonunu doğrulamıştır. Elde edilen sonuçlar, aşı polimerizasyon parametrelerinin kontrolünün membran yüzey performansını etkili biçimde geliştirdiğini göstermektedir. Gelişmiş yüzey bütünlüğü ve morfolojik kararlılık, VA/CG-g-EGD membranlarını pervaporasyon temelli ayırma ve seçici geçirgenlik ile mekanik dayanım gerektiren ilaç salım uygulamaları için umut vadeden adaylar haline getirmektedir.

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Cite This Article

Geyik, G., Baysak, F. K. (2025). Influence of Graft Copolymerization Initiators on the Morphology and Wettability of VA/CG-g-EGD Membranes. Kırklareli Üniversitesi Mühendislik ve Fen Bilimleri Dergisi, Cilt: 11 Sayı: 2, 304–319. https://doi.org/10.34186/klujes.1808054

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