Polyethersulfone sulfonated by chlorosulfonic acid and its membrane characteristics

被引：282
作者：
Guan, R [1 ]
Zou, H [1 ]
Lu, DP [1 ]
Gong, CL [1 ]
Liu, YF [1 ]
机构：
[1] Hubei Univ, Fac Chem & Mat Sci, Wuhan 430062, Peoples R China
来源：
EUROPEAN POLYMER JOURNAL | 2005年 / 41卷 / 07期
关键词：
sulfonation; sulfonated polyethersulfone; chlorosulfonic acid; membrane; characteristics;
D O I：
10.1016/j.eurpolymj.2005.01.018
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Sulfonated polyethersulfone (SPES) was prepared by homogeneous method with chlorosulfonic acid as sulfonating agent and concentrated sulfuric acid as solvent. The presence of sulfonic acid groups in SPES was confirmed by H-1 NMR and FTIR. Thermogravimetric analysis (TGA) studies were carried out to investigate the thermal stability of SPES. Membranes were cast from SPES solutions in N-methyl-2-pyrrolidone. Tensile strength of prepared membranes decreased with degree of sulfonation (DS) but water uptakes of SPES membranes increased with DS. Compared with unsulfonated polyethersulfone membrane, the hydrophilicity of SPES membranes was increased, as shown by a reduced contact angle with water. Amorphous structures for SPES membranes were detected by X-ray diffraction. Atomic force microscopy phase images of the membranes clearly showed the hydrophilic domains at higher DS. (c) 2005 Elsevier Ltd. All rights reserved.
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收藏
页码：1554 / 1560
页数：7
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