研究生学术报告预告登记（开题、中期、答辩）

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       为加强研究生学术交流活动，推进学术创新，特开通“研究生学术报告预告区”。我校研究生和教师可以在预告区及时发布和了解有关研究生学术报告的信息，届时参加。也可就某学术报告展开专题讨论与交流。

报告人: 宋震宇
学号: 1009207053
学院: 化工学院
报告类型: 其他学术报告
日期: 2011年01月10日
时间: 11:30
地点: 填料楼四层圆厅会议室
导师: 李保安
题目: Research progress on preparation of PVDF hollow fiber membrane via TIPS method
内容提要: A mixed diluent composed of γ-butyrolactone (γ-BL) and dioctyl phthalate (DOP) was employed for preparing PVDF microporous membrane via TIPS method. The relation equations expressing the quantitative relationship between interaction parameter and phase separation temperature were deduced based on Flory-Huggins equation and solubility parameter theory. The unknown constants in the relation equations were solved out by fitting the binodal curve with cloud points in phase diagram. The binodal curves of PVDF/mixed diluent systems with different diluent compositions were calculated according to the relation equations. The results of DSC measurement indicated that the composition of mixed diluent had little impact on the crystallization temperature under same PVDF concentration. The locations possible to yield bicontinuous structures inside microporous membrane were predicted in phase diagram. Finally, the interconnected cellular structures were observed inside the membrane at the predicted compositions under SEM.
图片:
登记人: 宋震宇
登记时间: 2012年04月16日 星期一 16:17
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