We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
PREPARATION OF POLYVINYLIDENE FLUORIDE/POLYVINYL DIMETHYLSILOXANE COMPOSITE HOLLOW FIBER MEMBRANES AND THEIR SEPARATION PROPERTIES.
- Authors
Meng, Bo; Yang, Nai-tao; Tan, Xiao-yao; Zhang, Bao-yan
- Abstract
Microporous polyvinylidene fluoride (PVDF) hollow fibre membranes were spun using the dry-wet phase inversion method. By means of dip-coating technique, a uniform coating with thickness of around 5-12 mm of polyvinyl dimethylsiloxane (PVDMS) was formed on the surface of porous PVDF hollow fibers. The structural parameters of PVDF substrate membrane were estimated by gas permeation test. Using N2/O2 as the medium, the separation properties of PVDMS-PVDF composite hollow fiber membranes were also evaluated experimentally. The experimental data of both permeability and selectivity are in good agreement with the theoretical results predicted by the presented pore-distribution model. In order to obtain the compact composite membrane free of defects by the dip-coating technique, the thickness of PVDMS skin must be higher than 5 μm.
- Subjects
SURFACE coatings; POLYVINYL chloride; FIBERS; PERMEABILITY; SURFACE tension; CHEMICAL industry
- Publication
Chinese Journal of Polymer Science (World Scientific Publishing Company), 2005, Vol 23, Issue 1, p75
- ISSN
0256-7679
- Publication type
Article
- DOI
10.1142/S025676790500014X