• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of surface investigation: x-ray, synchrotron and neutron techniques >Thermal, X-Ray Structural and Microscopic Studies of the Effect of Transmembrane Pressure on the Crystallographic and Surface Parameters of OFAM-K and OPMN-P Nanofiltration Membranes
【24h】

Thermal, X-Ray Structural and Microscopic Studies of the Effect of Transmembrane Pressure on the Crystallographic and Surface Parameters of OFAM-K and OPMN-P Nanofiltration Membranes

机译：热，X射线结构和微观研究跨膜压力对OFM-K和OPMN-P纳滤膜结晶和表面参数的影响

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

Experimental studies and analysis of the effect of transmembrane pressure on the composite porous film material of OFAM-K, OPMN-P membranes and their components by differential scanning calorimetry (DSC), X-ray diffraction analysis and optical microscopy are presented. Investigations of nanofiltration composite materials by differential scanning calorimetry make it possible to study thermal effects that cause changes in the structure and phase transformations with increasing temperature in the membrane sample. X-ray diffraction analysis of the crystalline and amorphous regions of composite films using the radial distribution function allow the change in the unit cells in the membrane polymer sample due to an increase in the interatomic distances to be established. The crystallinity in a membrane sample exposed to transmembrane pressure increases from 44 to 55% due to the appearance of an additional crystalline phase in the film. Optical microscopy studies of the membrane substrate show a morphological feature that resembles fiber compaction, as well as the presence of microscopic voids, which can ultimately be explained by the presence of more knitted fibers in some areas of the membrane.
机译：采用差示扫描量热法（DSC）、X射线衍射分析和光学显微镜对OFAM-K、OPMN-P膜及其组分复合多孔膜材料的跨膜压力效应进行了实验研究和分析。通过差示扫描量热法研究纳滤复合材料，可以研究热效应，这些热效应会导致膜样品中的结构和相变随温度的升高而发生变化。利用径向分布函数对复合膜的结晶区和非晶区进行X射线衍射分析，可以确定由于原子间距离增加，膜聚合物样品中的单胞发生变化。由于膜中出现了额外的晶相，暴露于跨膜压力下的膜样品的结晶度从44%增加到55%。对膜基质的光学显微镜研究显示，其形态特征类似于纤维压实，以及微观空隙的存在，这最终可以通过在膜的某些区域中存在更多针织纤维来解释。

著录项

相似文献

  • 外文文献
  • 中文文献
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