| 碳酸钙对热致相分离制备聚偏氟乙烯多孔膜结构的影响 |
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| 引用本文： | 徐国强,李先锋,吕晓龙.碳酸钙对热致相分离制备聚偏氟乙烯多孔膜结构的影响[J].高分子材料科学与工程,2007,23(5):234-237. |
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| 作者姓名： | 徐国强 李先锋 吕晓龙 |
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| 作者单位： | 天津工业大学中空纤维膜材料与膜过程教育部重点实验室,天津,300160 |
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| 基金项目： | 天津市科技攻关项目
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天津工业大学中空纤维膜教育部重点实验室开放课题 |
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| 摘 要： | 通过熔融共混聚偏氟乙烯(PVDF)/CaCO3/复合稀释剂拟三元体系,采用热致相分离法(TIPS)制备了PVDF多孔膜。研究了复合稀释剂含量、CaCO3含量、粒径以及后期酸处理对膜结构的影响。结果表明:CaCO3含量和粒径对膜结构有明显的影响。在采用复合稀释剂的基础上,通过控制CaCO3粒子添加量,改变粒径,可以实现对膜结构的优化,并且经酸处理提高了PVDF膜孔隙率。
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| 关 键 词： | 聚偏氟乙烯 热致相分离 多孔膜 CaCO3 膜结构 |
| 文章编号： | 1000-7555（2007）05-0234-04 |
| 修稿时间： | 2006-06-12 |
Effect of Calcium Carbonate on the Structure of Porous PVDF Membrane in TIPS Process |
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| XU Guo-qiang,LI Xian-feng,LV Xiao-long.Effect of Calcium Carbonate on the Structure of Porous PVDF Membrane in TIPS Process[J].Polymer Materials Science & Engineering,2007,23(5):234-237. |
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| Authors: | XU Guo-qiang LI Xian-feng LV Xiao-long |
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| Affiliation: | Key laboratory of Hollow Fiber Membrane Materials and Membrane Process of Ministry of Education, Tianjin Polytechnic University, Tianjin 300160, China |
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| Abstract: | Polyvinylidene fluoride(PVDF) blend membranes were prepared by melt-blending PVDF/CaCO3/combined dilute pseudo-ternery system in TIPS.Effects of CaCO3 particle content,size,and acid treatment on membrane structure were investigated by SEM.The results show that CaCO3 particle content,size,and acid treatment influence the final structure obviously.The membrane morphology can be optimized via adjusting the above-mentioned factors on the base of the combined dilute. |
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| Keywords: | polyvinylidene fluoride thermally induced phase separation porous membrane CaCO3 membrane structure |
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