Preparation of Ethylene Chlorotrifluoroethylene Co-polymer Membranes via Thermally Induced Phase Separation

被引：9

作者：

Zhou Bo ^{[1
]}

Lin Ya-Kai ^{[1
]}

Ma Wen-Zhong ^{[1
]}

Tang Yuan-Hui ^{[1
]}

Tian Ye ^{[1
]}

Wang Xiao-Lin ^{[1
]}

机构：

[1] Tsinghua Univ, Beijing Key Lab Membrane Mat & Engn, Beijing 100084, Peoples R China

来源：

CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE | 2012年 / 33卷 / 11期

关键词：

Thermally induced phase separation; Ethylene chlorotrifluoroethylene co-polymer; Microporous membrane; Diethyl phthalate; PVDF MEMBRANE; FABRICATION; DILUENTS;

D O I：

10.7503/cjcu20120033

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Microporous ethylene chlorotrifluoroethylene co-polymer (ECTFE) membrane was prepared via thermally induced phase separation(TIPS) method. By an analysis of interaction parameter, compatibility of ECTFE/diluent systems and the membrane cross-section morphologies, the liquid-liquid phase separation was found during the TIPS process when diethyl phthalate (DEP) was chosen as a diluent. The thermodynamic phase diagram confirms that a large liquid-liquid phase separation region for the ECTFE/DEP system was observed. The monotectic point of this system appeared at a high polymer concentration which was approximately up to 55%. Moreover, the effects of the cooling temperature and coarsening time on membrane structure, porosity, and tensile strength were also investigated. The results showed that a faster cooling rate and shorter coarsening time at 458 K led to membranes with smaller pore size.

引用

页码：2585 / 2590

页数：6

共 27 条

[1]

Bacino J., 1995, Patent Appl, Patent No. [US5476589 A, 5476589]

[2]

Castro A.J., 1981, US, Patent No. [4247498A, 4247498]

[3]

[陈刚 CHEN Gang], 2007, [膜科学与技术, Membrane Science and Technology], V27, P42

[4]

CHEN Gang, 2007, MEMBRANE SCI TECHNOL, V51, P42

[5]

[丁怀宇 DING Huaiyu], 2006, [膜科学与技术, Membrane Science and Technology], V26, P71

[6]

Grulke E.A., 1999, Polymer Handbook, V4th, P675

[7] Formation of isotactic polypropylene membranes with bicontinuous structure and good strength via thermally induced phase separation method [J].

Lin, Y. K. ;

Chen, G. ;

Yang, J. ;

Wang, X. L. .

DESALINATION, 2009, 236 (1-3) :8-15

[8]

Liu SQ, 2011, CHEM J CHINESE U, V32, P372

[9] MICROPOROUS MEMBRANE FORMATION VIA THERMALLY-INDUCED PHASE-SEPARATION .2. LIQUID LIQUID-PHASE SEPARATION [J].

LLOYD, DR ;

KIM, SS ;

KINZER, KE .

JOURNAL OF MEMBRANE SCIENCE, 1991, 64 (1-2) :1-11

[10]

LUO Ben-Zhe, 2005, STUDY POLYPROPYLENE

← 1 2 3 →