文献类型：期刊文献

英文题名：Mechanically robust and recyclable siloxane elastomers enabled by adjustable dynamic polymer networks for electronic skin

作者：Li, Chengpeng[1];Shi, Yanting[1];Su, Huixin[1];Yang, Yifeng[1];Li, Wen[1];Zhang, Tong[1];Chen, Weiyin[1];Lin, Roujun[1];Li, Yongzheng[2];Liao, Lusheng[2]

机构：[1]Guangdong Ocean Univ, Sch Chem & Environm Sci, Zhanjiang, Peoples R China;[2]Agr Prod Proc Res Inst, Zhanjiang, Peoples R China

年份：2023

卷号：189

外文期刊名：EUROPEAN POLYMER JOURNAL

收录：SCI-EXPANDED(收录号：WOS:000954931600001)、、EI(收录号：20231213753021)、Scopus(收录号：2-s2.0-85150256035)、WOS

基金：Acknowledgements This work was financially supported by the Guangdong Province Regional Joint Fund -Youth Fund Project (Project No. 2021A1515110597) , the Innovation and Entrepreneurship Training Program of Guangdong Province (Project No. 010413122206) and Fundamental Research Funds of Guangdong Ocean university (Project No. 060302122103) .

语种：英文

外文关键词：Siloxane; Elastomers; Self-healing; Flexible electronics

外文摘要：Siloxane elastomers as substrate materials have recently attracted much interest in the applications of flexible electronics. Nevertheless, excellent mechanical properties, self-healing properties and recyclability can rarely be satisfied with single material simultaneously. In this study, multistrength hydrogen bonds and dynamic disulfide bonds were introduced into the siloxane to achieve high stretchability, good mechanical strength, comparative self-healing capacity and excellent recyclability. By adjusting the ratio of the two types of hydrogen bonding networks, the prepared elastomers exhibit tunable mechanical properties, stretchability, toughness and a coor-dinated self-healing efficiency of 25-80%. Benefiting from the aromatic disulfide, the siloxane elastomer exhibits significant improvement in tensile strength of similar to 4.67 MPa, tensile strain of similar to 1086% and toughness of similar to 27.36 MJ m(-3) with 75% healing efficiency. Furthermore, a self-healing flexible bifunctional sensor was constructed by encapsulating liquid metal alloy between the elastomers layers to detect the pressure and multiple human motions.