| 热致相分离法iPP/Nano-SiO_2共混微孔膜的结构与透过性能 |
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| 引用本文： | 杨振生,范丽菲,崔东胜,王志英.热致相分离法iPP/Nano-SiO_2共混微孔膜的结构与透过性能[J].天津工业大学学报,2010,29(3):1-5. |
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| 作者姓名： | 杨振生 范丽菲 崔东胜 王志英 |
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| 作者单位： | 河北工业大学,化工学院,天津,300130 |
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| 基金项目： | 河北省科学技术研究与发展计划项目，河北省自然科学基金资助项目 |
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| 摘 要： | 研究了等规聚丙烯(iPP)/邻苯二甲酸二丁酯(DBP)/邻苯二甲酸二辛酯(DOP)/纳米二氧化硅(Nano-SiO2)体系的热致相分离(TIPS)行为,光学显微镜测定体系的液-液相分离温度,示差扫描量热仪(DSC)测定体系的iPP动态结晶温度.加热模压并控制冷却速率制备iPP/Nano-SiO2共混平板微孔膜,对膜结构与透过性能进行了表征.发现Nano-SiO2提高了体系的液-液相分离温度;Nano-SiO2起到了成核剂作用,提高了iPP的动态结晶温度.X光电子能谱(XPS)表明Nano-SiO2向膜表面发生了迁移,膜的亲水性有所提高.随Nano-SiO2添加量增加,膜结构由粒子形态为主向胞腔形态为主转变;膜的孔隙率和纯水通量均呈现先上升后下降的趋势.研究表明:通过向制膜体系中添加Nano-SiO2,可以调控膜结构,并改善膜的透过性能.
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| 关 键 词： | 等规聚丙烯 纳米二氧化硅 热致相分离 多孔膜 通过性能 |
Morphology and permeability of iPP/Nano-SiO2 mixed microporous membrane via thermally induced phase separation |
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| YANG Zhen-sheng,FAN Li-fei,CUI Dong-sheng,WANG Zhi-ying.Morphology and permeability of iPP/Nano-SiO2 mixed microporous membrane via thermally induced phase separation[J].Journal of Tianjin Polytechnic University,2010,29(3):1-5. |
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| Authors: | YANG Zhen-sheng FAN Li-fei CUI Dong-sheng WANG Zhi-ying |
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| Affiliation: | YANG Zhen-sheng,FAN Li-fei,CUI Dong-sheng,WANG Zhi-ying(School of Chemical Engineering and Technology,Hebei University of Technology,Tianjin 300130,China) |
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| Abstract: | The behaviors of thermally induced phase separation for isotactic polypropylene(iPP)/di-n-butyl phthalate(DBP)/ dioctyl phthalate(DOP)/Nano-SiO2 systems are investigated.Liquid-liquid phase separation temperatures are determined by noting the changes in optical images with an optical microscope,and dynamic crystallization temperatures of iPP from the systems are investigated with DSC.iPP/Nano-SiO2 mixed microporous membranes are prepared by molding with heater,and with subsequently cooling.It is shown that ... |
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| Keywords: | isotactic polypropylene(iPP) Nano-SiO2 thermally induced phase separation(TIPS) porous membrane permeability |
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