| 基于离子特异性效应调控聚电解质络合物水凝胶自修复性能 |
| |
| 引用本文： | 刘慧丽,刘光明,张广照. 基于离子特异性效应调控聚电解质络合物水凝胶自修复性能[J]. 化学物理学报, 2016, 29(6): 725-728 |
| |
| 作者姓名： | 刘慧丽 刘光明 张广照 |
| |
| 作者单位： | 中国科学技术大学化学物理系, 合肥 230026,中国科学技术大学化学物理系, 合肥 230026,华南理工大学材料科学与工程学院, 广州 510640 |
| |
| 摘 要： | 通过两步聚合法制备了甲基丙烯酰胺丙基三甲基氯化铵（MPTC）和苯乙烯磺酸钠（NaSS）聚电解质络合物（PMPTC/PNaSS）水凝胶，研究了基于离子特异性效应调控聚电解质络合物水凝胶的自修复性能.通过不同种类离子对PMPTC/PNaSS水凝胶的特异性掺杂，可影响水凝胶中聚电解质链间静电相互作用以及链的运动能力，从而控制水凝胶的力学性能以及自修复性能.结果表明，当掺杂阴离子从结构构造型的强水化离子变为结构破坏型的弱水化离子，聚电解质络合物水凝胶的自修复效率会逐渐增加.主要是由于结构破坏型阴离子可以更加有效地打开水凝胶中的离子键，提高聚电解质链的运动能力和自修复效率.
|
| 关 键 词： | 聚电解质水凝胶 自修复 离子特异性效应 力学性能 反离子 |
| 收稿时间： | 2016-05-13 |
| 修稿时间： | 2016-05-24 |
Modulation of Self-healing of Polyion Complex Hydrogel by Ion-specific Effects |
| |
| Hui-li Liu,Guang-ming Liu and Guang-zhao Zhang. Modulation of Self-healing of Polyion Complex Hydrogel by Ion-specific Effects[J]. Chinese Journal of Chemical Physics, 2016, 29(6): 725-728 |
| |
| Authors: | Hui-li Liu Guang-ming Liu Guang-zhao Zhang |
| |
| Affiliation: | Department of Chemical Physics, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei 230026, China,Department of Chemical Physics, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei 230026, China and Faculty of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China |
| |
| Abstract: | We have prepared polyion complex (PIC) hydrogel consisting of poly(3-(methacryloylami no) propyl-trimethylamonium chloride) and poly(sodium p-styrenesulfonate) polyelectrolytes via a two-step polymerization procedure and have investigated specific ion effects on the selfhealing of the PIC hydrogel. Our study demonstrates that the mechanical properties of the PIC hydrogel are strongly dependent on the type of the ions doped in the hydrogel. The ion-specific effects can be used to modulate the self-healing efficiency of the PIC hydrogel. As the doped anions change from kosmotrops to chaotropes, the self-healing efficiency of the PIC hydrogel increases. A more chaotropic anion has a stronger ability to break the ionic bonds formed within the hydrogel, leading to a higher efficiency during the healing. |
| |
| Keywords: | Polyelectrolyte hydrogel Self-healing Ion-specific effects Mechanical property Counterions |
|
| 点击此处可从《化学物理学报》浏览原始摘要信息 |
|
点击此处可从《化学物理学报》下载全文 |
