Synthesis and characterization of polymer electrolyte membranes based on PVDF and styrene via photoinduced grafting

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• 作者：Seyda Golcuk (1)
  Ali Ekrem Muftuoglu (1)
  Sevim Unugur Celik (1)
  Ayhan Bozkurt (1)
  
• 关键词：PVDF ; Styrene ; Graft copolymers ; Photoinduced polymerization ; Polymer electrolyte ; Triazole ; Proton conductivity
• 刊名：Journal of Polymer Research
• 出版年：2013
• 出版时间：May 2013
• 年：2013
• 卷：20
• 期：5
• 全文大小：451 KB
• 参考文献：1. Muftuoglu AE, Tasdelen MA, Yagci Y (2010) Handbook of photochemistry and photophysics of polymeric materials. In: Norman S. Allen (ed) Chapter 13: Photografting of polymeric materials, John Wiley & Sons, New Jersey, pp 509-39
  2. Muftuoglu AE, Tasdelen MA, Mishra MK, Yagci Y (2009) Chapter 11: Block and graft copolymers. In: Mishra MK, Yagci Y (eds) Handbook of vinyl polymers: radical polymerization, process, and technology. CRC Press Taylor & Francis Group, New York, pp 307-44
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• 作者单位：Seyda Golcuk (1)
  Ali Ekrem Muftuoglu (1)
  Sevim Unugur Celik (1)
  Ayhan Bozkurt (1)
  
  1. Department of Chemistry, Fatih University, 34500, Buyukcekmece, Istanbul, Turkey
  
• ISSN：1572-8935

文摘

This contribution demonstrates the use of a novel photoinduced grafting approach in the fabrication of anhydrous proton conducting poly(vinylidene fluoride) (PVDF) membranes. The process basically involves grafting of styrene onto cast PVDF films under UV light, subsequent sulfonation and triazole doping. Degree of grafting was explored as a function of UV irradiation time, as varied from 0.5?h to 8?h. The synthesized graft copolymers were characterized by 1H NMR and FT-IR spectroscopic analyses. Their thermal properties were examined by Thermogravimetric Analysis (TGA) and Differential Scanning Calorimetry (DSC) measurements. To assess the potential of the membranes to be used in fuel cell applications, their ion exchange capacities, water uptakes, and hydration numbers were measured and correlated with degree of grafting. Anhydrous proton conducting properties of 1H-1,2,4-triazole-doped PVDF-g-PSSA polymers were studied. PVDF-g-PSSA(Tri)2 with a degree of grafting of 50.8?% showed a maximum water-free proton conductivity of approximately 5?×-0??mS/cm at 150?°C.