利用多组分不相容体系熔融共混挤出法制备乙烯-乙烯醇共聚物(EVOH)纳米纤维,以聚酯(PET)无纺布为基材,经分散-成膜过程制备EVOH纳米纤维膜,并在其上沉积纳米纤维素晶(NCC)制备EVOH纳米纤维复合膜,研究EVOH纳米纤维膜及其复合膜结构性能和油水分离特性.结果表明,随着单位面积纳米纤维质量增加,EVOH纳米纤维膜孔隙率先增加后趋于稳定,孔径和接触角呈减小趋势,水通量均高于商业微孔滤膜.在EVOH纳米纤维膜表面沉积NCC可明显改善膜亲水性,所制备复合膜对油水乳液截留率可达98.5％,其通量较未修饰的EVOH纳米纤维膜和商业微孔滤膜稳定,在水过滤领域具有潜在应用前景.
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