Ion-specific swelling of poly(styrene sulfonic acid) hydrogel
文献类型：期刊论文
| 作者 | Xu, Ling; Li, Xin; Zhai, Maolin; Huang, Ling; Peng, Jing; Li, Jiuqiang; Wei, Genshuan |
| 刊名 | JOURNAL OF PHYSICAL CHEMISTRY B
 |
| 出版日期 | 2007-04-07 |
| 卷号 | 111期号:13页码:3391-3397 |
| ISSN号 | 1520-6106 |
| DOI | 10.1021/jp067707d |
| 英文摘要 | Poly(styrene sulfonic acid) (PSSA) hydrogel was prepared by radiation crosslinking using methyl N, N-bisacrylamide as crosslinker. Effects of ion species and concentration on the swelling behavior of PSSA hydrogel were investigated in aqueous solution of selected anions (F-, Cl-, Br-, SCN-), cations (Li+, Na+, K+, Ca2+), and hydrophobic ions (tetramethylammonium cation TMA(+), tetrabutylammonium cation TBA(+), and dodecyltrimethylammonium cation TAB(+)). The deswelling extent of PSSA hydrogel follows anion Hofmeister series, i.e., SCN- < Br- < Cl- < F-, in solutions containing selected anions and K+ as counterion up to a concentration of 2 mol, L-1. On the contrary, the deswelling extent of PSSA hydrogel in solutions containing selected cations and Cl- follows the sequence of Li+ < Na+ < K+ < Ca-2+,Ca- which is the reverse of the Hofmeister series except Ca2+. We have discussed the effects of ions on the hydrogen bonding through SO3- and phenyl ring in salt solutions at low and high concentrations. Other interactions, such as the cation-pi and hydrophobic interactions, also contributed to the ion-specific swelling of PSSA hydrogel. The proposed mechanism was further elucidated by FTIR and NMR analysis. A very specific deswelling-reswelling phenomenon of PSSA hydrogel in KF solution has been observed and ascribed to the F- binding to phenyl ring through a specific interaction. |
| 语种 | 英语 |
| WOS记录号 | WOS:000245260500012 |
| 出版者 | AMER CHEMICAL SOC |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/62751]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Zhai, Maolin |
| 作者单位 | Beijing Univ, Coll Chem & Mol Engn, Dept Appl Chem, Beijing Natl Lab Mol Sci, Beijing 100871, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu, Ling,Li, Xin,Zhai, Maolin,et al. Ion-specific swelling of poly(styrene sulfonic acid) hydrogel[J]. JOURNAL OF PHYSICAL CHEMISTRY B,2007,111(13):3391-3397. |
| APA | Xu, Ling.,Li, Xin.,Zhai, Maolin.,Huang, Ling.,Peng, Jing.,...&Wei, Genshuan.(2007).Ion-specific swelling of poly(styrene sulfonic acid) hydrogel.JOURNAL OF PHYSICAL CHEMISTRY B,111(13),3391-3397. |
| MLA | Xu, Ling,et al."Ion-specific swelling of poly(styrene sulfonic acid) hydrogel".JOURNAL OF PHYSICAL CHEMISTRY B 111.13(2007):3391-3397. |
入库方式： OAI收割
来源：化学研究所
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