• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Applied Polymer Science >Membrane formation via phase separation induced by penetration of nonsolvent from vapor phase. II. Membrane morphology
【24h】

Membrane formation via phase separation induced by penetration of nonsolvent from vapor phase. II. Membrane morphology

机译：非溶剂从气相渗透引起的通过相分离形成的膜。二。膜形态

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Phase separation of poly(vinylidene fluoride) dimethylformamide solution was induced by the penetration of water vapor, and the porous membrane was formed. As the humidity in the gas phase increased, membrane morphology changed in the order of dense, porous (cellular), and lacy-like structures. At the higher humidity condition, spherical bead structure was observed, which is likely to be crystalline spherulite. With the increase of the initial polymer concentration, less pores were formed in the case of the lower humidity of 20%, whereas more distinguished spherical structures were formed in the case of higher humidity of 40%. The obtained membrane morphologies were discussed based on both the calculated composition paths during the process and the phase diagram.
机译：通过水蒸气的渗透引起聚偏二氟乙烯二甲基甲酰胺溶液的相分离，并形成多孔膜。随着气相湿度的增加，膜的形态以致密，多孔（细胞）和花边状结构的顺序变化。在较高的湿度条件下，观察到球形珠状结构，其可能是结晶球晶。随着初始聚合物浓度的增加，在较低湿度20％的情况下形成的孔较少，而在较高湿度40％的情况下形成的球状结构更加明显。基于过程中计算出的组成路径和相图，讨论了获得的膜形态。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号