| 混合稀释剂对热致相分离法制备等规聚丙烯微孔膜的影响 |
| |
| 引用本文： | 陈刚,林亚凯,王晓琳. 混合稀释剂对热致相分离法制备等规聚丙烯微孔膜的影响[J]. 膜科学与技术, 2007, 27(6): 42-46,51 |
| |
| 作者姓名： | 陈刚 林亚凯 王晓琳 |
| |
| 作者单位： | 清华大学,化学工程系,北京,100084;清华大学,化学工程系,北京,100084;清华大学,化学工程系,北京,100084 |
| |
| 基金项目： | 国家重点基础研究发展计划(973计划) , 北京市教委科研项目 |
| |
| 摘 要： | 以邻苯二甲酸二丁酯(DBP)和大豆油混合物为稀释剂,利用热致相分离(ThermallyInduced Phase Separation,TIPS)法制备了等规聚丙烯(iPP)微孔膜.结果表明,稀释剂体系中DBP和大豆油的质量比对浊点温度影响较大,而对结晶温度影响较小;随着稀释剂体系中DBP含量的增加,在固定聚合物浓度及相同的冷却条件下,多孔膜由空间网状结构逐渐转变为腔胞状结构,表面孔径也有明显的增大趋势;稀释剂的加入降低了iPP球晶的生长速率,其组成对iPP球晶生长速率也有一定影响.
|
| 关 键 词： | 热致相分离 微孔膜 等规聚丙烯 邻苯二甲酸二丁酯 大豆油 |
| 文章编号： | 1007-8924（2007）06-0042-05 |
| 收稿时间： | 2006-07-26 |
| 修稿时间： | 2006-07-26 |
Effects of mixed diluents on isotactic polypropylene microporous membrane formation via thermally induced phase separation process |
| |
| CHEN Gang,LIN Yakai,WANG Xiaolin. Effects of mixed diluents on isotactic polypropylene microporous membrane formation via thermally induced phase separation process[J]. Membrane Science and Technology, 2007, 27(6): 42-46,51 |
| |
| Authors: | CHEN Gang LIN Yakai WANG Xiaolin |
| |
| Abstract: | Isotactic polypropylene(iPP) microporous membranes were prepared via thermally induced phase separation(TIPS) process with the mixture of dibutyl phthalate(DBP) and soybean oil as the diluents.The experimental results showed that the cloud-point curves were affected remarkably by the weight ratios of DBP to soybean oil,but the crystallization temperatures showed less dependence on this weight ratio.Under the same polymer concentration and cooling conditions,the microporous membrane morphologies were changed from network structure to cellular structure and the surface pore sizes were enlarged when DBP's weight ratio is increased.The iPP spherulite growth rates were also affecteded by the diluent compositions. |
| |
| Keywords: | thermally induced phase separation microporous membrane isotactic polypropylene dibutyl phthalate soybean oil |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
