Composite proton exchange membranes are prepared with polyvinyl alcohol(PVA),phosphotungstic acid(PWA) and alumina(Al_2O_3). The proton conductivity,water uptake,swelling degree and methanol permeability of the membranes are measured.

• 在聚乙烯醇(PVA)中添加磷钨酸(PWA)和氧化铝(A l2O3)；制得复合质子交换膜；测定其电导率、含水率、溶胀度和甲醇透过系数等性质.