Sulfonated poly(ether imide) and poly(ether sulfone) blends for direct methanol fuel cells. I. Sulfonation of PEI and characterization of the products

被引:19
作者
Shu, Yao-Chi [1 ]
Chuang, Fu-Sheng [1 ]
Tsen, Wen-Chin [1 ]
Chow, Jing-Dong [2 ]
Gong, Chunli [3 ]
Wen, Sheng [3 ]
机构
[1] Vanung Univ, Dept Polymer Mat, Tao Yuan 32045, Taiwan
[2] Vanung Univ, Dept Environm Engn, Tao Yuan 32045, Taiwan
[3] Xiaogan Univ, Dept Chem, Xiaogan 432100, Hubei, Peoples R China
关键词
sulfonated poly(ether imide); poly(ether sulfone); polymer blends; electrolyte membrane; fuel cells;
D O I
10.1002/app.27481
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
This investigation examines characteristics of sulfonated polyether imides (SPEI) with various ion exchange capacity values (EEC) and completes previous work to enable its blends to be adopted as polyelectrolyte in direct methanol fuel cells (DMFC). Polyether imides (PEI) were sulfonated by using chlorosulfonic acid as the sulfonating agent and chloroform as the solvent. The structure of SPEI was observed by FTIR and H-1 NW. The sulfonate or sulfonic acid content of the polymers, expressed as a number per repeat unit of the polymer, was accurately determined by elemental analysis and conductometric titration. Physical properties such as solubility, intrinsic viscosities, thermal stability, and glass transition temperature (T-g) were studied for both PEI and SPET. TGA-FTIR verified that sulfonic groups, attached to the aromatic ring in the PEI backbone, are split at 230-350 degrees C, but the main-chain splitting temperature of SPEI is similar to that of pure polymer. The sulfonated samples exhibited good solubilities and increased glass transition temperatures (T(g)values) as degree of sulfonation (DS) increased; two T-g values were detected when IEC was sufficiently high. (c) 2007 Wiley Periodicals, Inc.
引用
收藏
页码:2963 / 2969
页数:7
相关论文
共 31 条
[1]   POLYMERIC MEMBRANES BASED ON BISPHENOL-A FOR GAS SEPARATIONS [J].
BARBARI, TA ;
KOROS, WJ ;
PAUL, DR .
JOURNAL OF MEMBRANE SCIENCE, 1989, 42 (1-2) :69-86
[2]  
CHEN WJ, 1994, C R J MEMBR SCI, V95, P57
[3]   Structural and performance study of microporous polyetherimide hollow fiber membranes made by solvent-spinning method [J].
Feng, CY ;
Khulbe, KC ;
Chowdhury, G ;
Matsuura, T ;
Sapkal, VC .
JOURNAL OF MEMBRANE SCIENCE, 2001, 189 (02) :193-203
[4]   Preparation and performance of asymmetric polyetherimide membranes for isopropanol dehydration by pervaporation [J].
Feng, XS ;
Huang, RYM .
JOURNAL OF MEMBRANE SCIENCE, 1996, 109 (02) :165-172
[5]   SYNTHESIS, PROPERTIES, AND STRUCTURE OF SULFONATE IONOMERS [J].
FITZGERALD, JJ ;
WEISS, RA .
JOURNAL OF MACROMOLECULAR SCIENCE-REVIEWS IN MACROMOLECULAR CHEMISTRY AND PHYSICS, 1988, C28 (01) :99-185
[6]   Development and characterization of homogeneous membranes prepared from sulfonated poly(phenylene oxide) [J].
Guan, R ;
Gong, CL ;
Lu, DP ;
Zou, H ;
Lu, W .
JOURNAL OF APPLIED POLYMER SCIENCE, 2005, 98 (03) :1244-1250
[7]   SYNTHESIS AND TRANSPORT-PROPERTIES OF THIN-FILM COMPOSITE MEMBRANES .1. SYNTHESIS OF POLY(PHENYLENE OXIDE) POLYMER AND ITS SULFONATION [J].
HUANG, RYM ;
KIM, JJ .
JOURNAL OF APPLIED POLYMER SCIENCE, 1984, 29 (12) :4017-4027
[8]   Sulfonation of poly(ether ether ketone)(PEEK): Kinetic study and characterization [J].
Huang, RYM ;
Shao, PH ;
Burns, CM ;
Feng, X .
JOURNAL OF APPLIED POLYMER SCIENCE, 2001, 82 (11) :2651-2660
[9]   Development and characterization of homogeneous membranes de from high molecular weight sulfonated polyphenylene oxide [J].
Kruczek, B ;
Matsuura, T .
JOURNAL OF MEMBRANE SCIENCE, 1998, 146 (02) :263-275
[10]   Sulfonated poly(ether ether ketone) membranes for direct methanol fuel cell [J].
Li, L ;
Zhang, J ;
Wang, YX .
JOURNAL OF MEMBRANE SCIENCE, 2003, 226 (1-2) :159-167