Farklı Üretim Tekniklerinin PVA Esaslı Yeşil Kompozit Membranların Gaz Ayırma Özelliklerine Etkisi

Yıl 2024, , 2290 - 2301, 15.12.2024

Tuğba Mutuk , Taha Yağız Keskin , Hülya Aykaç Özen

https://doi.org/10.31466/kfbd.1558555

Öz

Bu çalışmada polivinil alkol (PVA) esaslı ve muz lifi katkılı yeşil kompozit membranların gaz ayırma özellikleri incelenmiştir. Membran üretiminde, çevre dostu ve biyolojik olarak parçalanabilir bir polimer olan PVA kullanılmış, ana takviye malzemesi olarak ise muz lifi tercih edilmiştir. Muz lifleri atık olarak değerlendirilebilen doğal bir malzeme olup, kompozitlerin termal, mekanik ve gaz geçirgenlik özelliklerine katkıda bulunmuştur. Araştırmada döküm yöntemi ve elektrosprey biriktirme yöntemi olmak üzere iki farklı üretim yöntemi kullanılmıştır. Bu yöntemlerin, PVA esaslı kompozit membranların mikroyapısına ve gaz ayırma performansına olan etkileri karşılaştırılmıştır. Gaz geçirgenliği ve CO2/N2 gaz ayrımı testlerinde muz lifinin katkı oranının (ağ.%1, %3, %5) ve üretim yönteminin etkisi analiz edilmiştir. Elektrosprey biriktirme yöntemiyle üretilen membranların, özellikle ağ.%5 muz lifi katkılı kompozit membranların, CO2 geçirgenlik değerlerinin en yüksek olduğunu göstermiştir. Ayrıca, elektrosprey biriktirme yöntemiyle elde edilen membranların, döküm yöntemine göre daha gözenekli bir yapıya sahip olduğu ve bu nedenle gaz geçirgenliğini artırdığı tespit edilmiştir. Ancak, seçicilik açısından bakıldığında, en yüksek CO2/N2 seçiciliği saf PVA membranlarda elde edilmiştir. Muz lifi katkısının artırılması, gözenek yapısını iyileştirirken, seçiciliği olumsuz etkileyebilmektedir. Bu çalışma, karbon yakalama teknolojilerinde sürdürülebilir ve doğal malzeme kullanımı açısından önemli katkılar sunmuş ve PVA esaslı yeşil kompozitlerin gelecekteki endüstriyel uygulamalar için potansiyel taşıdığını ortaya koymuştur.

Anahtar Kelimeler

Elektrosprey biriktirme, Yeşil kompozit, Membran, Gaz ayrımı

Etik Beyan

Yapılan çalışmada araştırma ve yayın etiğine uyulmuştur.

Effect of Different Production Techniques on Gas Separation Properties of PVA Based Green Composite Membranes

Öz

In this study, the gas separation properties of polyvinyl alcohol (PVA) based and banana fiber added green composite membranes were investigated. PVA, which is an environmentally friendly and biodegradable polymer, was used in membrane production, and banana fiber was preferred as the main reinforcement material. Banana fibers are a natural material that can be utilized as waste and contributed to the thermal, mechanical and gas permeability properties of the composites. Two different production methods were used in the study, namely the casting method and the electrospray deposition method. The effects of these methods on the microstructure and gas separation performance of PVA based composite membranes were compared. Gas permeability and CO2/N2 separation tests, the banana fiber contribution ratio (wt. 1%, 3%, 5%) and the production method were analyzed. It was shown that the membranes produced by the electrospray method, especially the composite membranes with wt. 5% banana fiber added, had the highest CO2 permeability values. In addition, it was determined that the membranes obtained by the electrospray method had a more porous structure compared to the casting method and therefore increased gas permeability. However, in terms of selectivity, the highest CO2/N2 selectivity was obtained in pure PVA membranes. Increasing the banana fiber content improves the pore structure, but may negatively affect selectivity. This study has made significant contributions in terms of sustainable and natural material use in carbon capture technologies and has revealed that PVA-based green composites have potential for future industrial applications.

Anahtar Kelimeler

Electrspray deposisition, Green composite, Membrane, Gas seperation

Kaynakça

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