Fabrication and Characterization of Polyphosphazene-Based Exchange Membranes

摘要本项目涉及烷基苯氧基和烷基苯氧基/苯氧基取代聚磷膦烯交联和磺化阳离子交换膜的制备。由于其化学稳定性和热稳定性以及通过在- p =N-主链上添加不同侧链来修饰聚合物的便性，磷腈聚合物是很有前途的新膜基础材料。所得膜的化学和机械性能将被表征。这些膜在化学成分、离子交换能力和交联程度上有所不同。该膜的潜在应用包括电渗析和超滤，以及固体聚合物电解质燃料电池。

CTS - 9632079 Peter Pintauro Tulane University ABSTRACT The project involves the fabrication of crosslinked and sulfonated cation-exchange membranes from alkylphenoxy- and alkylphenoxy/phenoxy-substituted polyphospazenes. Phosphazene polymers are promising base-materials for new membranes due to their chemical and thermal stability and the ease of modifying the polymer by adding different side-chains onto the -P=N- Backbone. The chemical and mechanical properties of the resulting membranes will be characterized. The membranes will differ in chemical composition, ion-exchange capacity, and degree of crosslinking. Potential applications of the membranes include electrodialysis and ultrafiltration, as well as solid polymer electrolyte fuel cells.