| STRUCTURE AND PROPERTIES OF COMPOSITE POLYURETHANE HOLLOW FIBER MEMBRANES |
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| 作者姓名： | Xian-fengLi Chang-faXiao |
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| 作者单位： | KeyLaboratoryofHollowFiberMembraneMaterialsandMembraneProcess,MinistryofEducation,DepartmentofMaterialsScience,TianjinPolytechnicUniversity,Tianjin300160,China |
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| 摘 要： | Composite polyurethane (PU)-SiO2 hollow fiber membranes were successfully prepared via optimizing the technique of dry-jet wet spinning, and their pressure-responsibilities were confirmed by the relationships of pure water fluxtransmembrane pressure (PWF-TP) for the first time. The origin for this phenomenon was analyzed on the basis of membrane structure and material characteristics. The effects of SiO2 content on the structure and properties of membrane were investigated. The experimental results indicated that SiO2 in membrane created a great many interfacial micro-voids and played an important role in pressure-responsibility, PWF and rejection of membrane: with the increase of SiO2 content, the ability of membrane recovery weakened, PWF increased, and rejection decreased slightly.
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| 关 键 词： | 聚亚安酯 二氧化硅 电荷-镶嵌隔膜 界面聚合 复合膜 |
| 收稿时间： | 2004-02-02 |
| 修稿时间： | 2004-05-24 |
STRUCTURE AND PROPERTIES OF COMPOSITE POLYURETHANE HOLLOW FIBER MEMBRANES |
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| Xian-fengLi Chang-faXiao.STRUCTURE AND PROPERTIES OF COMPOSITE POLYURETHANE HOLLOW FIBER MEMBRANES[J].Chinese Journal of Polymer Science,2005,0(2):203-210. |
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| Authors: | Xian-feng Li Chang-fa Xiao |
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| Institution: | Key Laboratory of Hollow Fiber Membrane Materials and Membrane Process, Ministry of Education, |
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| Abstract: | Composite polyurethane (PU)-SiO2 hollow fiber membranes were successfully prepared via optimizing the technique of dry-jet wet spinning, and their pressure-responsibilities were confirmed by the relationships of pure water fluxtransmembrane pressure (PWF-TP) for the first time. The origin for this phenomenon was analyzed on the basis of membrane structure and material characteristics. The effects of SiO2 content on the structure and properties of membrane were investigated. The experimental results indicated that SiO2 in membrane created a great many interfacial micro-voids and played an important role in pressure-responsibility, PWF and rejection of membrane: with the increase of SiO2 content, the ability of membrane recovery weakened, PWF increased, and rejection decreased slightly. |
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| Keywords: | Polyurethane Silicon dioxide Composite hollow fiber membrane Pressure-responsibility |
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