静电纺丝技术在近几十年来得到了快速发展,静电纺丝制备的纳米纤维具有比表面积大和孔隙率高的优点,因而广泛应用于海水淡化、电池隔膜和重金属离子吸附等领域。结合层层组装法,以交联的静电纺聚乙烯醇(PVA)为基底,壳聚糖(CTS)和海藻酸钠(SA)为聚电解质,成功制备了复合纳米纤维膜,并对复合膜表面的聚电解质层(PEL)进行了交联,考察复合膜的抗水解性能。结果表明:交联最佳条件为戊二醛/丙酮=2.0%(质量分数)、时间3h、pH=2。
The electrospun technology has developed rapidly in recent decade years.Since the nanofibers have high porosity and a large specific surface area,which is widely used in the fields of desalination,battery separators,air filtration and adsorption of heavy metal ions.Combined with layer-by-layer assembly (LbL) method,the composite nanofiber membranes were successfully prepared by using cross-linked electrospinning PVA as the substrate,CTS and SA as the polyelectrolyte.And PEL layer on the surface of membrane was cross-linked.The optimum conditions of cross-linking were GA50%/acetone=2.0wt%,3h,pH=2.
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基金资助
国家自然科学基金(51503005、21274006);北京市自然科学基金(2182014);北京市科协“金桥工程种子资金”(H2017-42);北京市教育委员会科技计划一般项目(SQKM201710012004);北京服装学院高水平教师队伍建设专项资金(BIFTQG201801);北京市科技北京百名领军人才工程(Z161100004916168);北京市优秀人才(2017000020124G089)
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