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以季铵化壳聚糖(QCS)和纤维素(CM)为原料,戊二醛(GA)为交联剂,采用化学交联法制备具有全互穿网络结构的QCS/CM阴离子交换膜,并对其热稳定性、含水率、溶胀度、机械强度、电导率以及离子交换量等相关性能进行表征.结果表明,CM的引入提高了该膜的离子交换量、电导率以及机械强度.将QCS-CM35%置于10 mol/L的KOH (60℃)溶液中浸渍240 h,该膜的外观、机械性能以及含水率等指标没有明显衰减,同时该膜30℃时的电导率从泡碱前的3.43×10-2 S/cm提高到4.60×10-2 S/cm,而70℃时的电导率从泡碱前的8.73×10-2 S/cm提高到1.009×10-1S/cm.表明该膜具有良好的耐碱性.

参考文献

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