文献类型：期刊文献

英文题名：Modified cellulose nanocrystals are used to enhance the performance of self-healing siloxane elastomers

作者：Fan, Xu[1] Yang, Xinxin[1] Wang, Shibo[1] Wang, Siheng[1] Xu, Xu[3] Jiang, Jianxin[2] Shang, Shibin[1] Song, Zhanqian[1]

第一作者：Fan, Xu

通信作者：Song, ZQ[1]|[a0005c3716bb5fed5ea85]宋湛谦;

机构：[1]Chinese Acad Forestry, Key Lab Chem Engn Forest Prod,Coinnovat Ctr Effic, Inst Chem Ind Forestry Prod,Natl Engn Lab Biomass, Key Lab Biomass Energy & Mat,Natl Forestry & Gras, Nanjing 210042, Jiangsu, Peoples R China;[2]Beijing Forestry Univ, MOE Engn Res Ctr Forestry Biomass Mat & Bioenergy, Natl Forest & Grass Adm Woody Spices East China E, Dept Chem & Chem Engn, Beijing 100083, Peoples R China;[3]Nanjing Forestry Univ, Coll Chem Engn, Jiangsu Prov Key Lab Chem & Utilizat Agroforest B, Nanjing 210037, Jiangsu, Peoples R China

年份：2021

卷号：273

外文期刊名：CARBOHYDRATE POLYMERS

收录：;EI(收录号：20213410793094);Scopus(收录号：2-s2.0-85112753228);WOS:【SCI-EXPANDED(收录号:WOS:000703521100003)】；

基金：This paper was supported by the Fundamental Research Funds of CAF (CAFYBB2020QC003).

语种：英文

外文关键词：ICNCs; Self-healing siloxane elastomers; Self-healing efficiency; Recyclable; Adhesives

摘要：Self-healing siloxane elastomers with high ductility can be developed for the manufacture of wearable and flexible electronic devices. However, the poor mechanical properties of self-healing siloxane elastomers limit their industrial applications. Herein, the mechanical and self-healing properties of siloxane elastomers were improved using 3-isocyanatepropyltrimethoxysilane modified (ICNCs) as a crosslinking agent and nanofiller. ICNCs increased the tensile strength and shear strength of siloxane elastomers by 54% and 68.6%, respectively. Significantly, ICNCs decreased the relaxation time for siloxane elastomers and reduced the activation energy for reversible siloxane equilibration from 68 kJ/mol to 38 kJ/mol. Therefore, ICNCs improve the self-healing and welding efficiency of siloxane elastomers. Furthermore, the self-healing siloxane elastomer maintained excellent mechanical properties and thermal properties after three cycles of recycling. Our research reveals that such a material can be applied to the field of recyclable self-healing products and surface adhesives.