Effect of Annealing Temperature and Time on Structure and Performance of Poly(vinyl)alcohol Nanocomposite Membranes

被引：23

作者：

Sabetghadam, Anahid ^{[1
]}

Mohammadi, Toraj ^{[1
]}

机构：

[1] Iran Univ Sci & Technol, Dept Chem Engn, Res Ctr Membrane Separat Proc, Tehran, Iran

来源：

POLYMER ENGINEERING AND SCIENCE | 2010年 / 50卷 / 12期

关键词：

GPTMS HYBRID MEMBRANES; PERVAPORATION SEPARATION; AQUEOUS-SOLUTION; FREE-VOLUME; PERMEATION; MIXTURES; TETRAETHOXYSILANE; DEHYDRATION; ALCOHOL); SORPTION;

D O I：

10.1002/pen.21763

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The importance of annealing process in tuning the morphological properties of membranes is obvious. In this study, poly(vinyl)alcohol as a continuous phase in nanocomposite membranes was crosslinked by mixed silanes. Tetraethylorthosilicate (TEOS) and Aminopropyltriethoxysilane (APTEOS) as two kinds of silane coupling agents go through cohydrolization and cocondensation reactions during sol-gel process to create nanoparticles in the polymer matrix. The condensation reaction is endothermic, which leads to formation of linking bonds between silica nanoparticles and polymer chains during dehydration process. This reaction is sensitive to temperature and time of annealing. The results showed that the PAT33 nanocomposite membrane performs much better separation than other prepared membranes. In this work, effects of annealing temperature and time on physicochemical properties of the prepared nanocomposite membranes and their pervaporation performance were investigated. POLYM. ENG. SCI., 50:2392-2399, 2010. (C) 2010 Society of Plastics Engineers

引用

页码：2392 / 2399

页数：8

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