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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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基于静电纺丝技术的PET/PVA复合超滤膜制备条件的探索
DOI: 10.3724/SP.J.1105.2013.12383, PP. 1137-1142
Keywords: 静电纺丝技术,超滤,复合纳米纤维膜,抗水解性能
Abstract:
采用多喷头静电纺丝技术制备了复合超滤膜,该复合超滤膜是以聚对苯二甲酸乙二酯(PET)无纺布为支撑层,PET/PVA复合纳米纤维膜为分离层,再用丙酮和水的混合溶剂处理得到致密分离层.采用扫描电镜法(SEM)、红外光谱法(FTIR)对复合膜表面进行表征,测试了复合超滤膜的抗水解性能.SEM结果表明,复合膜表面的PET纳米纤维的直径为960nm,PVA纳米纤维的直径为320nm,用不同比例的混合溶剂对复合超滤膜进行处理会产生不同的表面形貌,最佳的比例是w(丙酮)/w(水)=30/70.抗水解性能实验结果显示比较适宜的交联剂加入量为2wt%,用该含量对复合膜进行交联,复合膜具有较好的抗水解性能,其中重量损失率为2.12%,溶胀度为3.62%.红外光谱分析表明,交联处理后,复合膜表面的—OH量大大减少,耐水性能提高,交联前后膜表面在—C=O和C—O—C处的吸收峰有很大的区别.
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