| 聚偏氟乙烯膜的超疏水改性研究 |
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| 引用本文： | 林汉阳,武春瑞,吕晓龙.聚偏氟乙烯膜的超疏水改性研究[J].膜科学与技术,2010,30(2). |
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| 作者姓名： | 林汉阳 武春瑞 吕晓龙 |
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| 作者单位： | 天津工业大学,生物化工研究所,天津,300160 |
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| 基金项目： | 天津市科技计划项目(08ZCKFSH02200);;“863”课题(2008AA06Z303) |
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| 摘 要： | 为提高疏水膜的疏水性能,使其可在膜蒸馏、膜吸收等领域有更广泛的应用.采用溶液相转移法制备超疏水性聚偏氟乙烯(PVDF)分离膜,考察了铸膜液中PVDF和非溶剂(低分子二醇类化合物PG)的浓度对膜润湿性能的影响.结果表明,通过改变铸膜液中PVDF、PG的浓度,能使PVDF膜的表面静态接触角从75.1°提高到161.7°,滚动角仅为15.8°.还研究了PVDF复合膜的制备条件对膜润湿性能的影响,结果表明,在一定的非溶剂浓度范围,增加复合膜涂覆液中非溶剂PG的加入量,有利于得到较高的复合膜表面接触角,但膜丝在涂覆液中的浸泡时间也需要相应延长.当非溶剂PG的质量分数为39.1%、浸泡时间为50 s时,复合膜表面接触角达到了155°.
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| 关 键 词： | 聚偏氟乙烯 疏水膜 超疏水化 接触角 表面改性 |
Modification of the super-hydrophobic polyvinylidene fluoride membrane |
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| LIN Hanyang,WU Chunrui,LU Xiaolong.Modification of the super-hydrophobic polyvinylidene fluoride membrane[J].Membrane Science and Technology,2010,30(2). |
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| Authors: | LIN Hanyang WU Chunrui LU Xiaolong |
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| Affiliation: | Institute of Biological and Chemical Engineering/a>;Tianjing Polytechnic University/a>;Tianjin 300160/a>;China |
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| Abstract: | Improving the hydrophobic property for hydrophobic membrane could make it have wider use in many areas,such as membrane distillation,membrane absorption,and so on.In this paper,we prapared the super-hydrophobic polyvinylidene fluoride(PVDF) membranes by non-solvent induced phase separation,researched the influences of content of PVDF and non-solvent(low-molecular-weight diols PG) in the casting solution on the hydrophobicity of membranes.The results showed that, by changing the content of PVDF and PG in the... |
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| Keywords: | polyvinylidene fluoride hydrophobic membrane super-hydrophobic contact angle surface modification |
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