| PU/PVDF共混中空纤维膜结构与性能 |
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| 引用本文： | 胡晓宇,肖长发,安树林,王照旭. PU/PVDF共混中空纤维膜结构与性能[J]. 膜科学与技术, 2007, 27(6): 97-100 |
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| 作者姓名： | 胡晓宇 肖长发 安树林 王照旭 |
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| 作者单位： | 天津工业大学,省部共建教育部中空纤维膜材料与膜过程重点实验室,天津,300160;天津工业大学,省部共建教育部中空纤维膜材料与膜过程重点实验室,天津,300160;天津工业大学,省部共建教育部中空纤维膜材料与膜过程重点实验室,天津,300160;天津工业大学,省部共建教育部中空纤维膜材料与膜过程重点实验室,天津,300160 |
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| 基金项目： | 教育部博士学科点专项基金项目(20040058002)，天津市科技发展计划项目资助课题(043102711) |
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| 摘 要： | 采用熔体纺丝后拉伸的方法制备了聚氨酯(PU)/聚偏氟乙烯(PVDF)共混中空纤维膜,研究了拉伸对共混膜形态结构的影响,通过测定水通量随透膜压力的变化讨论了PU/PVDF共混中空纤维膜的压力响应性能,并对不同拉伸倍数所得膜压力响应性能差异进行了研究.结果表明,拉伸过程增大了聚合物间界面微孔的通透性,有效地提高了膜的水通量;且随拉伸倍数的提高,PU/PVDF共混中空纤维膜界面微孔的回复性有所提高.
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| 关 键 词： | 共混中空纤维膜 聚氨酯 聚偏氟乙烯 压力响应 |
| 文章编号： | 1007-8924（2007）06-0097-04 |
| 收稿时间： | 2006-08-09 |
| 修稿时间： | 2006-09-15 |
Structure and properties of polyurethane/poly(vinylidene difluoride) blend hollow fiber membrane |
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| HU Xiaoyu,XIAO Changfa,AN Shulin,WANG Zhaoxu. Structure and properties of polyurethane/poly(vinylidene difluoride) blend hollow fiber membrane[J]. Membrane Science and Technology, 2007, 27(6): 97-100 |
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| Authors: | HU Xiaoyu XIAO Changfa AN Shulin WANG Zhaoxu |
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| Abstract: | Polyurethane/polyvinylidene difluoride(PU/PVDF) blend hollow fiber membranes were prepared by melting-spinning and drawing.The influence of drawing on the structure of membrane was analyzed.The pressure-responsibility of the membrane was analyized by the relationships of water flux and transmembrane pressure and the different pressure-responsibility property of the membrane with different draw ratio was also studied.Results showed that drawing improved the permeability of the interfacial micro-voids of the membranes,and thus increased the water flux of the membranes.With the increasing in draw ratio,the reversion property of the interfacial micro-voids of the PU/PVDF blend hollow fiber membrane is also improved. |
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| Keywords: | blend hollow fiber membrane polyurethane poly(vinylidene difluoride) pressure-responsibility |
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