文献类型：期刊文献

英文题名：Self-healing, self-adhesive, and stretchable conductive hydrogel for multifunctional sensor prepared by catechol modified nanocellulose stabilized poly(?-thioctic acid)

作者：Yang, Xinxin[1] Zhang, Bowen[1] Li, Jingjing[1] Shen, Minggui[1] Liu, He[1] Xu, Xu[2] Shang, Shibin[1]

第一作者：Yang, Xinxin

通信作者：Shen, MG[1];Xu, X[2]

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

年份：2023

卷号：313

外文期刊名：CARBOHYDRATE POLYMERS

收录：;EI(收录号：20231513881139);Scopus(收录号：2-s2.0-85152145313);WOS:【SCI-EXPANDED(收录号:WOS:000982422000001)】；

基金：The authors are grateful for the support of the National Science Foundation of China (32071709) and the Forestry Science and Tech- nology Innovation and Extension Project of Jiangsu Province (LYKJ [2021] 04) .

语种：英文

外文关键词：Cellulose nanofiber; Self-healing; Self-adhesion; Hydrogel; Flexible sensor

摘要：Self-healing, self-adhesive, and stretchable bio-based conductive hydrogels exhibit properties similar to those of biological tissues, making them an urgent requirement for emerging wearable devices. The primary challenge lies in devising straightforward strategies to accomplish all the aforementioned performances and achieve equilibrium among them. This study used the natural compound thioctic acid (TA) and modified cellulose to prepare conductive hydrogels with stretchability, healing, and self-adhesion through a simple one-step strategy. Metastable poly(TA) was obtained through ring-opening polymerization of lithiated TA, followed by the introduction of dopamine-grafted cellulose nanofibers (DCNF) to stabilize poly(TA) and prepare PTALi/DCNF hydrogels with the aforementioned properties. The hydrogels demonstrated remarkable conductivity, attributed to the existence of Li + ions, with a maximum conductivity of 17.36 mS/cm. The self-healing capacity of the hydrogels was achieved owing to the presence of disulfide bond in TA. The introduction of DCNF can effectively stabilize poly (TA), endow the hydrogel with self-adhesion ability, improve the mechanical properties, and further enhance the formability of hydrogels. Generally, bio-based PTALi/DCNF hydrogels with stretchability, self-healing, selfadhesion, and conductivity are obtained through a simple strategy and used as a sensor with a wide response range and high sensitivity. Hydrogels have significant potential for application in wearable electronic devices, electronic skins, and soft robots.