文献类型：期刊文献

英文题名：Preparation of high-performance deproteinized natural rubber/chitosan composite films via a green and sulfur-free method

作者：Yuan, Changcheng[1];Sun, Jinyu[1];Tian, Xiaohui[1];Yuan, Yizhong[1]

机构：[1]East China Univ Sci & Technol, Shanghai Key Lab Adv Polymer Mat, Sch Mat Sci & Engn, Shanghai 200237, Peoples R China

年份：2023

卷号：140

期号：1

外文期刊名：JOURNAL OF APPLIED POLYMER SCIENCE

收录：;EI(收录号：20224312998299);WOS:【SCI-EXPANDED(收录号:WOS:000870750600001)】；

语种：英文

外文关键词：biopolymers and renewable polymers; mechanical properties; polysaccharides; supramolecular structures

摘要：To solve the environment and health issues arose from the sulfur vulcanization, a facile and completely eco-friendly method of latex-assembly and in situ cross-linking is developed to prepare fully bio-based and high-performance rubber films. The films are featured by a "reinforced concrete" structure composed of dynamically cross-linked chitosan framework and unvulcanized deproteinized natural rubber (DPNR) matrix. The self-assembly of DPNR latex particles and chitosan, as well as the in situ cross-linking of chitosan in the film forming process are confirmed by transmission electron microscope and dynamic light scattering. As green rubbers without vulcanization, the as-designed composite films possess excellent mechanic properties comparable to those of the sulfur vulcanized DPNR film, whose tensile strength and toughness reach 15.2 MPa and 77.6 MJ m(-3) respectively. Moreover, the films exhibited appropriate permeability to moisture and achievable reprocessing, which have potential applications in wearable devices.