| 稀释剂对混合相分离法制备聚偏氟乙烯膜的影响 |
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| 引用本文： | 王建强,潘凯,房昺,曹兵. 稀释剂对混合相分离法制备聚偏氟乙烯膜的影响[J]. 北京化工大学学报(自然科学版), 2010, 37(4): 73-77. DOI: 10.3969/j.issn.1671-4628.2010.04.015 |
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| 作者姓名： | 王建强 潘凯 房昺 曹兵 |
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| 作者单位： | 北京化工大学 材料科学与工程学院, 北京100029 |
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| 基金项目： | 教育部科学技术研究重点项目 |
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| 摘 要： | 以聚偏氟乙烯(PVDF)为基材,分别选用N,N-二甲基乙酰胺(DMAc)、苯丙酮为溶剂和稀释剂,通过将热致相分离(TIPS)和非溶剂致相分离(NIPS)相混合的方法制备了PVDF膜。研究结果表明,随稀释剂含量的增加,膜断面结构由大球晶转变为双连续的结构,膜上表面(空气面)致密层厚度减小,膜下表面(玻璃面)孔径逐渐变小。同时膜纯水通量随稀释剂含量增加而增大,牛血清蛋白(BSA)截留率和拉伸强度由于膜结构的变化而略有降低。
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| 关 键 词： | 聚偏氟乙烯 热致相分离 非溶剂致相分离 膜结构 |
| 收稿时间： | 2010-02-26 |
Effect of a diluent on the preparation of poly(vinylidene fluoride) membranes via blended phase separation |
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| WANG JianQiang,PAN Kai,FANG Bing,CAO Bing. Effect of a diluent on the preparation of poly(vinylidene fluoride) membranes via blended phase separation[J]. Journal of Beijing University of Chemical Technology, 2010, 37(4): 73-77. DOI: 10.3969/j.issn.1671-4628.2010.04.015 |
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| Authors: | WANG JianQiang PAN Kai FANG Bing CAO Bing |
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| Affiliation: | College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China |
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| Abstract: | Poly(vinylidene fluoride) (PVDF) membranes have been prepared via blended phase separation,which is the combination of thermally induced phase separation (TIPS) and non-solvent induced phase separation (NIPS). The PVDF membranes were prepared using N,N-dimethylacetamide (DMAc) as the solvent and propiophenone as diluent. The results showed that as the diluent content was increased,the cross-section structure changed from spherical crystals to a bi-continuous morphology,the thickness of the dense skin presen... |
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| Keywords: | poly(vinylidene fluoride) thermally induced phase separation non-solvent induced phase membrance structure |
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