期刊
JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
卷 55, 期 16, 页码 2585-2593出版社
WILEY
DOI: 10.1002/pola.28521
关键词
bottom-ignited frontal polymerization (BIFP); radical polymerization; self-healing; host-guest interaction; supramolecular gels; magnetocaloric effect
资金
- National Natural Science Foundation of China [21474052]
- Natural Science Foundation of Jiangsu Province [BK20131408, BK20160988]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
A series of the self-healing gels facilely fabricated by VI (N-vinyl imidazole) and MAH-beta-CD (beta-cyclodextrin grafted vinyl carboxylic acid groups) via bottom-ignited frontal polymerization (BIFP) initiated by magnetocaloric effect. Once ignited the bottom phase, the heat upward propagates to generate the front in the upper phase. Then, no further energy is added to maintain the reaction and the whole polymerization process experiences within minutes. In this system, the dependence of frontal velocity and temperature, along with morphology, swelling capacity, mechanical property, and self-healing efficiency, on the preparation parameters is investigated. Interestingly, the gels show good swelling capacity in the organic solvent, comparatively almost no absorption in water. Moreover, the as-prepared gels exhibit excellent auto-healing properties without any external stimuli at ambient temperature. The healed sample possesses 97% recovery of its tensile strength after 8 h healing time, which relies largely on the host-guest interaction between VI and MAH-beta-CD. The results demonstrate that FP can be utilized as an efficient and energy-saving method to synthesize self-healing supramolecular gels. (C) 2017 Wiley Periodicals, Inc.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据