文献类型：期刊文献

英文题名：A tough, healable, and recyclable conductive polyurethane/carbon nanotube composite

作者：Dong, Fuhao[1,2] Yang, Xinxin[2] Guo, Lizhen[2] Qian, Yuehan[1] Sun, Penghao[1] Huang, Zhen[1] Xu, Xu[1] Liu, He[2]

第一作者：Dong, Fuhao

通信作者：Xu, X[1];Liu, H[2]

机构：[1]Nanjing Forestry Univ, Coll Chem Engn, Coinnovat Ctr Efficient Proc & Utilizat Forest Res, Jiangsu Prov Key Lab Chem & Utilizat Agroforest Bi, Nanjing 210037, Jiangsu, Peoples R China;[2]State Forestry Adm, Chinese Acad Forestry, Key Lab Biomass Energy & Mat, Inst Chem Ind Forestry Prod,Natl Engn Lab Biomass, Nanjing 210042, Jiangsu, Peoples R China

年份：2023

卷号：631

起止页码：239-248

外文期刊名：JOURNAL OF COLLOID AND INTERFACE SCIENCE

收录：;EI(收录号：20224713141096);Scopus(收录号：2-s2.0-85141913222);WOS:【SCI-EXPANDED(收录号:WOS:000901228000003)】；

基金：This work was supported by Projects from the National Natural Science Foundation of China (32171722) and the National Natural Science Foundation of China (32071708) . Top-notch Academic Pro-grams Project of Jiangsu Higher Education Institutions (ATPP) , the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD) , and International Innovation Center for Forest Chemicals and Materials.

语种：英文

外文关键词：Self-healing performance; Polyurethane elastomer; Conductive composites; Multifunctional flexible sensor recyclability

摘要：Recently, conductive composites have been used in flexible electronic devices and have attracted atten-tion. The integration of self-healing, high sensitivity, large tensile strength, environmental stability, and easy recyclability into conductive composites is very desirable yet challenging. Hence, a conductive com-posite as a flexible strain sensor with a self-healing and recyclability is facilely developed, with a polyur-ethane (PU) elastomer bearing dynamic boronic ester as the polymer matrix and carbon nanotubes (CNTs) as a conductive filler. Due to the dynamic boronic ester bond and hydrogen bond, the prepared polyurethane conductive composite has good self-healing and mechanical properties. It not only has a high healing efficiency of 78 % but also has a tensile strength of 15.4 MPa and an elongation at break of 420 %. In addition, the prepared conductive composite has high conductivity (0.57 mS/cm) and sensi-tivity. As a wearable sensor, it can identify human activities in all directions, such as elbow and finger bending, speaking, and facial changes. Consequently, the polyurethane conductive composite prepared in this study exhibited wonderful application potential in wearable electronic devices such as self -healing strain sensors.(c) 2022 Elsevier Inc. All rights reserved.