Electro-conductive double-network hydrogels
Electro-conductive double-network hydrogels
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DOI：
10.1002/polb.23066
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发表时间：
2012-06-01
影响因子：
--
通讯作者：
Osada, Yoshihito
中科院分区：
文献类型：
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作者：
Kishi, Ryoichi;Hiroki, Kazuaki;Osada, Yoshihito
以3，4-乙二氧基噻吩为原料，以双网络凝胶为基质，通过聚合反应合成了新型导电增韧双网络聚合物水凝胶(E-DN Gel)。该凝胶不仅具有优良的力学性能，其断裂应力为1.42.1 Mpa，而且在干燥和水胀状态下的电导率都高达10-3 S cm-1。E-dN凝胶的断裂应力和断裂能分别是dN凝胶的1.7倍和3.4倍。扫描电子显微镜和原子力显微镜观察发现，导电的聚(3，4-乙二氧基噻吩基)(PEDOT)被引入到DN凝胶基质中，这显然是由于DN凝胶网络中的磺酸基团形成了一个多离子络合物。因此，PEDOT加入到DN凝胶基质中，不仅极大地提高了电子导电性，而且还提高了力学性能，增强了双网络凝胶基质。(C)2012年Wiley期刊公司J Polym Sci第二部分：Polym Phys，2012
Novel electro-conductive and mechanically-tough double network polymer hydrogels (E-DN gels) were synthesized by polymerization of 3, 4-ethylenedioxythiophene in the presence of a double network hydrogel (DN gel) matrix. The E-DN gels showed not only excellent mechanical performance, having a fracture stress of 1.42.1 MPa, but also electrical conductivity as high as 10-3 S cm-1, both under dry and water-swollen states. The fracture stress and fracture energy of the E-DN gel was increased by 1.7 and 3.4 times, respectively, as compared with the DN gel. From scanning electron microscope and AFM observations, it was found that electro-conductive poly(3,4-ethylenedioxythiophene) (PEDOT) was incorporated into DN gel matrix, apparently due to the formation of a poly-ion complex with sulfonic acid group of the DN gel network. Thus, PEDOT incorporated into the DN gel matrix greatly improves not only electronic conductivity, but also mechanical properties, reinforcing the double network gel matrix. (C) 2012 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys, 2012