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Plasma polymerization of octafluorocyclobutane and hydrophobic microporous composite membranes for membrane distillation
Author(s) -
Kong Ying,
Lin Xiao,
Wu Yonglie,
Chen Jie,
Xu Jiping
Publication year - 1992
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1992.070460201
Subject(s) - membrane , membrane distillation , microporous material , chemical engineering , polymerization , materials science , composite number , polymer chemistry , interfacial polymerization , chemistry , composite material , polymer , desalination , biochemistry , monomer , engineering
In this paper, hydrophilic microporous cellulose nitrate membranes have been surface‐modified by plasma polymerization of octafluorocyclobutane (OFCB). The microporous composite membranes with a hydrophilic layer sandwiched between two hydrophobic layers have been obtained. The obtained composite membranes have been used in a membrane distillation (MD) process and have exhibited good performance. The effects of polymerization conditions, such as glow‐discharge power and deposition time, on the structures and MD performances of the obtained composite membranes have been investigated by SEM, X‐ray microscopical analysis, and XPS. The polymerization conditions should be as mild as possible in order to prepare the hydrophobic composite membrane with good MD performance. The typical MD behaviors of the obtained hydrophobic composite membranes are in agreement with that of hydrophobic membranes directly prepared from hydrophobic polymeric materials, like PVDF, PTFE, or PP.

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