Swelling behavior and solubility parameter of sulfonated poly(ether ether ketone)

被引:38
作者
Wu, Han-Lang
Ma, Chen-Chi M. [1 ]
Li, Chia-Hsun
Chen, Chih-Yuan
机构
[1] Natl Tsing Hua Univ, Dept Chem Engn, Hsinchu 30043, Taiwan
[2] Ind Technol Res Inst, Mat Res Labs, Hsinchu 310, Taiwan
关键词
cohesive energy; membranes; morphology; solubility parameter; sulfonated poly(ether ether ketone) (SPEEK); sulfonation; swelling;
D O I
10.1002/polb.20964
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
The solubility parameter of sulfonated poly(ether ether ketone) (SPEEK) was investigated. SPEEK exhibited two solubility parameters, 26.4 and 35.7 J(1/2) cm(-3/2), and was similar in that respect to Nafion, which has two cohesive energy densities. The theoretical solubility parameter of SPEEK, 26.1 J(1/2) cm(-3/2), was determined with van Krevelen's method and corresponded to the experimental value. The theoretical volume fraction of SPEEK in the solvent was determined with Flory's equation. The trend of the theoretical volume fraction of SPEEK fit quite well with the experimental results when the solubility parameter of the solvent was lower than 35 J(1/2) cm(-3/2). A significant deviation of the experimental volume fraction of SPEEK with the high solubility parameter resulted from the presence of sulfonic acid groups. SPEEK in the sodium form exhibited similar solvent absorption in comparison with SPEEK in the acid form. (c) 2006 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 44: 3128-3134, 2006.
引用
收藏
页码:3128 / 3134
页数:7
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