期刊
JOURNAL OF MEMBRANE SCIENCE
卷 446, 期 -, 页码 145-153出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.memsci.2013.06.037
关键词
Polytetralluoroethylene; Hollow fiber membrane; Structure; Vacuum membrane distillation
资金
- National Natural Science Foundation of China [51273181, 51073141]
- National Key Technology Research and Development Program of the Ministry of Science and Technology of China [2013BAC01B01]
- National Technology Research and Development Program of China [2013AA065003]
- New Century Excellent Talents in University [NCET-10-0980]
- Ministry of Major science & Technology of Zhejiang [2012C13006-2]
Polytetrafluoroethylene (PTFE) hydrophobic hollow fiber membranes were prepared through a cold pressing method including paste extrusion, stretching and sintering. The effect of stretching ratio on the characteristics of PTFE hollow fiber membranes was investigated. The morphological property of the PTFE hollow fiber membrane was studied in terms of held emission scanning electron microscopy (FESEM). It was observed that the PTFE hollow fiber membranes with four stretching ratios (120%, 160%, 180% and 220%) showed the microstructures of nodes interconnected by fibrils. Increasing stretching ratio was positive for pore size and porosity but negative for water entry pressure and mechanical property. The result of water contact angle measurement showed that the prepared PTFE hollow fiber membrane was a superior hydrophobic membrane material. Finally, the PTFE hollow fiber membranes were tested for their performances in the process of desalination through the vacuum membrane distillation (VMD). An increase in stretching ratio significantly improved the permeation flux. The salt rejections achieved 99.9% for all the PTFE hollow fiber membranes with four stretching ratios in this study, indicating the prepared PTFE hollow fiber membranes exhibited satisfying salt rejection performances. (C) 2013 Published by Elsevier B.V.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据