A Theoretical Investigation on the pH Responses of Strong Polyelectrolyte Brushes
文献类型：期刊论文
| 作者 | Gao, Z. F.1 ; Zhao, X. J.2,3
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| 刊名 | POLYMER SCIENCE SERIES A
 |
| 出版日期 | 2019-05-01 |
| 卷号 | 61期号:3页码:397-406 |
| ISSN号 | 0965-545X |
| DOI | 10.1134/S0965545X19030209 |
| 通讯作者 | Zhao, X. J.(zhaoxinjunzxj@163.com) |
| 英文摘要 | The pH responsive properties of poly[2-(methacryloyloxy)ethyl trimethylammonium chloride] (PMETAC) brushes have been manifested in an experiment carried out by Liu et al. (2017). In this paper, we have employed a molecular theory to study the pH response of strong polyelectrolyte brushes (SPBs), by considering both strong polyelectrolyte-OH- (P-O) hydrogen bonds and polyelectrolyte-counterions (P-C) bonds and their explicit coupling to the SPB conformation. It is found that, when at lower salt concentrations, the combination of P-O hydrogen bonds and P-C bonds results in the pH-responsive properties of a SPB, which are governed by the formation of interchain hydrogen bonds, while at higher salt concentrations, the pH response of the SPB is suppressed by the effect of salt ions. This finding agrees well with the experimental observation. We also investigate the OH--mediated bridging effect on the structure of a SPB. Based on this the oretical perspective, we predict that the pH response of a SPB will depend on the identity of salt, and the OH--mediated bridging interactions can induce a vertically phase segregation in a SPB. |
| WOS关键词 | POLYMER BRUSHES ; COLLAPSE ; WATER ; NEUTRON ; LAYER ; BLOCK |
| 资助项目 | Chinese National Science Foundation[21764015] ; Xinjiang Natural Science Foundation[2016D01C380] |
| WOS研究方向 | Polymer Science |
| 语种 | 英语 |
| 出版者 | MAIK NAUKA/INTERPERIODICA/SPRINGER |
| WOS记录号 | WOS:000469799300020 |
| 资助机构 | Chinese National Science Foundation ; Xinjiang Natural Science Foundation |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/2772]  |
| 专题 | 脉冲星研究团组 |
| 通讯作者 | Zhao, X. J. |
| 作者单位 | 1.Chinese Acad Sci, Xinjiang Astron Observ, 150,Sci 1 St, Urumqi 830011, Xinjiang, Peoples R China 2.Yi Li Normal Univ, Lab Micronano Electro Biosensors & Bion Devices, Yining 835000, Peoples R China 3.Yi Li Normal Univ, Xinjiang Lab Phase Transit & Microstruct Condense, Yining 835000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Gao, Z. F.,Zhao, X. J.. A Theoretical Investigation on the pH Responses of Strong Polyelectrolyte Brushes[J]. POLYMER SCIENCE SERIES A,2019,61(3):397-406. |
| APA | Gao, Z. F.,&Zhao, X. J..(2019).A Theoretical Investigation on the pH Responses of Strong Polyelectrolyte Brushes.POLYMER SCIENCE SERIES A,61(3),397-406. |
| MLA | Gao, Z. F.,et al."A Theoretical Investigation on the pH Responses of Strong Polyelectrolyte Brushes".POLYMER SCIENCE SERIES A 61.3(2019):397-406. |
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