采用氯化铝水溶液为壳聚糖(CS)的溶剂,通过季氨化改性得到季氨化的聚乙烯醇(PVA)(QPVA),并通过溶液复合制得QPVA/CS复合薄膜,并研究了QPVA/CS复合薄膜作为碱性燃料电池隔膜的性能。通过傅里叶变换红外光谱、X射线衍射分析和力学性能测试,研究添加氯化铝和甘油对QPVA/CS复合薄膜性能的影响。通过吸水率研究了QPVA/CS复合薄膜的吸水性能,并对复合薄膜的离子传导率进行了测定。研究结果表明,同时添加氯化铝和甘油条件下,制得的QPVA/CS复合薄膜的性能较好,断裂伸长率为235%,离子传导率为2.028×10^-2S/cm。

AlCl₃·6H₂O aqueous solution was used to dissolve chitosan,and quaternized poly(vinyl alcohol)/CS (QPVA/CS) membrane was prepared.The effect of AlCl₃·6H₂O on the the hydrogen bonding interaction,crystalline and mechanical properties were studied by fourier transformed infrared spectra,X-ray diffraction measurement and tensile testing,respectively.The ion conductivity of QPVA/CS membrane was studied by AC impedance method.The results showed that both AlCl₃·6H₂O and glycerol could form interaction with QPVA/CS.With the addition of AlCl₃·6H₂O and glycerol,the crystallinity of QPVA/CS membrane decreased and the flexibility of QPVA/CS increased.With the addition of AlCl₃·6H₂O and glycerol,the elongation at break of QPVA/CS could reach to 235% and the ion conductivity could reach to 2.028×10^-2 S/cm.