Catalytic performance of polyvinylidene fluoride (PVDF) supported TiO2 additive at microwave conditions

Authors : Hüseyin GÜMÜŞ

Pages : 361-374

Doi:10.18596/jotcsa.610886

View : 13 | Download : 8

Publication Date : 2020-06-23

Article Type : Research Paper

Abstract :TiO 2 is widely used additive material in order to improve properties of filtration membranes. As far as its contribution to filtration performance, TiO 2 acts as catalytic agent.In this study, catalytic activity of TiO 2 added PVDF flat sheets insert ignore into journalissuearticles values(membranes); prepared by phase inversion method, and they were performed on benzyl alcohol oxidation at microwave radiation. Structure, thermal behaviors and morphology of samples were investigated by FTIR, TG-DTA and SEM analysis respectively. Hydrophilicity was determined by contact angle measurements. Interaction between TiO 2 and PVDF chain was evidenced. TiO 2 added PVDF membranes had improved filtration and rejection performance. 32.4% BSA rejection was obtained with composites while it was 7.5% of pristine membrane. 93.86% conversion and 56% selectivity were obtained with composites in microwave-assisted batch reactor. Decomposition of polymer increased when 6% additive due to catalytic effect of TiO 2 then, it decreased with further loading.Detailed evidences were obtained by activation energies insert ignore into journalissuearticles values(E a ); of decomposition calculated by Kissinger method. Microwave-assisted catalytic effect of TiO 2 inside polymeric matrix promise to obtain fast, high yielded and disposable membrane materials for catalytic reactors to in-situ production of fine chemicals.
Keywords : Alcohol oxidation, degradation, filtration membranes, pvdf, TiO2