| 冻胶法制备超高分子量聚乙烯/SiO2杂化微孔膜研究——稀释剂与SiO2对铸膜液熔融结晶性能的影响 |
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| 引用本文： | 李娜娜,肖长发,姜兆辉.冻胶法制备超高分子量聚乙烯/SiO2杂化微孔膜研究——稀释剂与SiO2对铸膜液熔融结晶性能的影响[J].功能材料,2009,40(6). |
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| 作者姓名： | 李娜娜 肖长发 姜兆辉 |
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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： | 国家重点基础研究发展计划(973计划)资助项目(2007AA030304); 天津市科技支撑计划重点资助项目(08ZCGYGX03700) |
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| 摘 要： | 根据界面相分离原理,以矿物油为稀释剂,O2为添加剂,采用冻胶法制备了超高分子量聚乙烯(UHMWPE)膜以及UHMWPE/SiO2杂化微孔膜,讨论了稀释剂以及无机粒子含量对膜熔融结晶性能的影响.结果表明,矿物油作为微孔稀释剂,其加入使微孔膜中UHMWPE熔点降低,结晶度减小.当SiO2与UHMWPE质量比低于8/10时,随SiO2含量增加,UHMWPE熔点变化不显著,熔限增加,结晶温度升高,相对结晶度增大,微晶尺寸减小;当SiO2加入量足够大时,相对结晶度反而减小.随SiO2其含量增加,界面孔增多,膜孔隙率提高,水通量增大,泡点孔径先增大后减小.
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| 关 键 词： | 超高分子量聚乙烯 冻胶法 杂化微孔膜 熔融行为 |
Preparation of ultrahigh molecular weight polyethylene (UHMWPE)/SiO2 hybrid microporous membranes via gelation method-The effect of diluent and SiO2 on behaviors of melting and crystallization |
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| LI Na-na
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XIAO Chang-fa
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JIANG Zhao-hui.Preparation of ultrahigh molecular weight polyethylene (UHMWPE)/SiO2 hybrid microporous membranes via gelation method-The effect of diluent and SiO2 on behaviors of melting and crystallization[J].Journal of Functional Materials,2009,40(6). |
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| Authors: | LI Na-na XIAO Chang-fa JIANG Zhao-hui |
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| Affiliation: | LI Na-na,XIAO Chang-fa,JIANG Zhao-hui (The Key Laboratory of Hollow Fiber Membrane Material and Process of Ministry of Education,Tianjin Polytechnic University,Tianjin 300160,China) |
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| Abstract: | Microporous membranes of ultra-high molecular weight polyethylene (UHMWPE) and UHMWPE/SiO2 were prepared by gelation method,using mineral oil as diluent and SiO2 as Additives.The effect of diluent and SiO2 on behaviors of melting and crystallization was studied.The results suggested that the addition of diluent decreased the crystal density of UHMWPE,which made the melting point and crystallinity lower while the crystal size increased.With SiO2 content increasing,the melting limit widened,the crystallizatio... |
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| Keywords: | ultrahigh molecular weight polyethylene (UHMWPE) melting behavior crystallization gelation method interface microvoid |
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