文献类型：期刊文献

英文题名：Hydrophobic association hydrogel with toughness, high stretch, and sensitivity for flexible sensing

作者：Shu, Qicong[1];Yuan, Yizhong[1];Sun, Jinyu[1];Zhang, Yao[1];Yu, Huimei[2];Tian, Xiaohui[1];Cai, Chunhua[3]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai Key Lab Adv Polymer Mat, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai 200237, Peoples R China;[3]East China Univ Sci & Technol, Frontiers Sci Ctr Materiobiol & Dynam Chem, Sch Mat Sci & Engn, Shanghai Key Lab Adv Polymer Mat,Minist Educ,Key L, Shanghai, Peoples R China

年份：2025

卷号：142

期号：2

外文期刊名：JOURNAL OF APPLIED POLYMER SCIENCE

收录：;EI(收录号：20244217189111);WOS:【SCI-EXPANDED(收录号:WOS:001330152900001)】；

基金：This work was supported by the National Natural Science Foundation of China (52073095) and the Program of Shanghai Academic Research Leader (23XD1420900).

语种：英文

外文关键词：gels; mechanical properties; nanoparticles; nanostructured polymers; nanocrystals; nanowires; sensors and actuators

摘要：Polypyrrole (PPy), as a highly conductive polymer, is limited in application due to the difficulty of uniform dispersion in hydrogels. To improve the compatibility of PPy with hydrogels, xanthan gum (XG) is employed as an emulsifier to homogeneously disperse pyrrole (Py) in water. XG is used as a template for in situ polymerization, and PPy is coated on XG to form nanoparticles (PX) with a core-shell structure, enabling the nanoparticles to be dispersed uniformly in water for a long time. PX nanoparticles are combined with pure hydrophobic association hydrogel (HA) to form a HA/PX nanocomposite hydrogel. The HA/PX2% nanocomposite hydrogels exhibiting high toughness (equivalent to 5.1 MJ/m3) and high sensitivity (GF = 11.07 for 600%-1400% strain range) are prepared by combining dynamic hydrophobic cross-linking sites, as well as hydrogen bonding between PX nanoparticles and the cross-linked network. The test results show that the HA/PX nanocomposite hydrogel strain sensor has excellent strain sensing durability (800 cycles of 100% strain) and has the ability to accurately detect human joint movements for voice recognition and handwriting recognition. The nanocomposite hydrogel is a new method for the preparation of flexible electronic materials, which has great promise for application in the field of strain sensors. Preparation of HA/PX Hydrogels and Their Applications in Flexible Sensing. image