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Preparation and Characterization of Bipolar Membrane Modified by Nano-Si02
Pages: 160-164
Year: Issue:  1
Journal: Journal of Chemical Engineering of Chinese Universities

Keyword:  海藻酸钠壳聚糖双极膜纳米SiO2;
Abstract: 在壳聚糖(CS)阴离子交换膜层中添加纳米SiO2,制备了PVA-SA/SiO2-CS双极膜(其中,PVA:聚乙烯醇;SA:海藻酸钠),并用扫描电镜、热重、电子万能试验机、接触角测定仪、J-V关系和交流阻抗谱等对其进行了表征.研究结果表明,双极膜经纳米SiO2改性后,亲水性得以提高,壳聚糖膜的接触角从104.01°下降到78.39°.膜亲水性的提高增强了膜与水分子间的作用,减弱了水的键合力,促进了中...
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