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| A Theoretical Investigation on the pH Responses of Strong Polyelectrolyte Brushes | |
Zhao, X. J.1,2; Gao, Z. F.3
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| 2019-05-01 | |
| Source Publication | POLYMER SCIENCE SERIES A
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| ISSN | 0965-545X |
| Volume | 61Issue:3Pages:397-406 |
| Contribution Rank | 3 |
| Abstract | 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. |
| DOI | 10.1134/S0965545X19030209 |
| Indexed By | SCI |
| Language | 英语 |
| WOS Keyword | POLYMER BRUSHES ; COLLAPSE ; WATER ; NEUTRON ; LAYER ; BLOCK |
| Funding Project | Chinese National Science Foundation[21764015] ; Xinjiang Natural Science Foundation[2016D01C380] |
| WOS Research Area | Polymer Science |
| WOS Subject | Polymer Science |
| WOS ID | WOS:000469799300020 |
| Publisher | MAIK NAUKA/INTERPERIODICA/SPRINGER |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.xao.ac.cn/handle/45760611-7/2772 |
| Collection | 射电天文研究室_脉冲星研究团组 |
| Corresponding Author | Zhao, X. J. |
| Affiliation | 1.Yi Li Normal Univ, Xinjiang Lab Phase Transit & Microstruct Condense, Yining 835000, Peoples R China 2.Yi Li Normal Univ, Lab Micronano Electro Biosensors & Bion Devices, Yining 835000, Peoples R China 3.Chinese Acad Sci, Xinjiang Astron Observ, 150,Sci 1 St, Urumqi 830011, Xinjiang, Peoples R China |
| Recommended Citation GB/T 7714 | Zhao, X. J.,Gao, Z. F.. A Theoretical Investigation on the pH Responses of Strong Polyelectrolyte Brushes[J]. POLYMER SCIENCE SERIES A,2019,61(3):397-406. |
| APA | Zhao, X. J.,&Gao, Z. F..(2019).A Theoretical Investigation on the pH Responses of Strong Polyelectrolyte Brushes.POLYMER SCIENCE SERIES A,61(3),397-406. |
| MLA | Zhao, X. J.,et al."A Theoretical Investigation on the pH Responses of Strong Polyelectrolyte Brushes".POLYMER SCIENCE SERIES A 61.3(2019):397-406. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| Zhao-2019-A Theoreti（1179KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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