化工进展2018，Vol.37Issue(2)：673-680,8.DOI:10.16085/j.issn.1000-6613.2017-0777
超疏水聚偏氟乙烯复合微孔膜的制备及性能
Preparation and properties of superhydrophobic PVDF microporous composite membrane
摘要
Abstract
A novel method is reported to fabricate superhydrophobic polyvinylidene fluoride(PVDF) microporous composite membrane.PVDF microporous membrane prepared by phase inversion was used as the support membrane.Functional multi-walled carbon nanotubes (MWCNTs) were deposited on the support membrane by constant pressure filtration,then the prepared membrane was coated with polydimethylsiloxane(PDMS).The obtained composite membrane exhibited super-hydrophobic property with the water contact angle of 162° and the sliding angle of about 10°.The morphology,contact angle,N2flux and the tensile strength of the membranes were tested.The effect of the concentration of MWCNTs and PDMS in the coating solution on the structure and properties of the membranes were also investigated.The results showed that the addition of MWCNTs strengthened the nanostructures of the membrane surface and improved the roughness of the membrane simultaneously.The PDMS coating reduced the surface energy of the membrane.Their synergistic effect increased the contact angle and decreased sliding angle of the composite membranes significantly.Compared with the hydrophobic PVDF support membrane,the hydrophobicity of the composite membrane was better,and the elongation at breaking was doubled.In the vacuum membrane distillation of the simulated seawater,the operational stability and antifouling property of the composite PVDF membrane prepared in this study were greater than those of the hydrophobic PVDF support membrane.And the merits of high permeation flux and rejection coefficient were maintained.关键词
膜/制备/聚偏氟乙烯/过滤/碳纳米管/超疏水Key words
membranes/preparation/polyvinylidene fluoride/filtration/carbon nanotubes/superhydrophobic分类
通用工业技术引用本文复制引用
王志英,韩承志,于泳波,邓会宁,李春利..超疏水聚偏氟乙烯复合微孔膜的制备及性能[J].化工进展,2018,37(2):673-680,8.基金项目
河北省高等学校科学技术研究重点项目(ZD2015107)及河北省重点研发计划项目国际合作专项项目(17393601D). （ZD2015107）
