Determination of the physicochemical characteristics and electrical performance of postsulfortated and grafted sulfonated derivatives of poly(para-phenylene) as new proton-conducting membranes for direct methanol fuel cell

作者：Le Ninivin C; Balland Longeau A; Demattei D; Palmas P; Saillard J; Coutanceau C^*; Lamy C; Leger JM

来源：Journal of Applied Polymer Science, 2006, 101(2): 944-952.

DOI：10.1002/app.24022

• poly(para-phenylene)
• electrochemistry
• fuel cell
• methanol

Poly(para-phenylene)s (PPPs) are an interesting class of rigid-rod polymers that have excellent thermal and mechanical properties. Because of their high degree of crystallinity and lower permeability to methanol, PPPs are insoluble and infusible. A number of methods have been developed to synthesize substituted sulfonated PPPs bearing lateral chains to improve their solubility. In this work, a comparison of the physicochemical properties of three PPP-based polymers is made with respect to Nafion membranes. One of these polymers was prepared with the postsulfonation method, and the other two were made with a new method of grafting developed in the Commissariat a l'Energie Atomique laboratory (a grafted sulfonated PPP polymer and a grafted perfluorinated sulfonated polymer). The sulfonated PPP polymers were examined for their mechanical properties, small-angle X-ray scattering, water absorption, proton conductivity, and methanol permeability. Relations between structures and properties were also investigated. Performances in fuel-cell tests were also investigated.

• 出版日期2006-7-15
• 单位中国地震局