文献类型：期刊文献

英文题名：Ultrasonic-assisted synthesis and enhancement of chitosan/graphene nanosheet composites

作者：Wu, Guangyu[1];Huang, Tianqi[2];Huang, Jianguo[1]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]Donghua Univ, Sch Mat Sci & Engn, 2999 North Renmin Rd, Shanghai 201620, Peoples R China

年份：2018

卷号：39

期号：11

起止页码：4217

外文期刊名：POLYMER COMPOSITES

收录：;EI(收录号：20172803938823);WOS:【SCI-EXPANDED(收录号:WOS:000452241300040)】；

语种：英文

外文关键词：Graphite - Dispersions - Intercalation - Exfoliation (materials science) - Graphene - Nanosheets

摘要：This study investigated a simple and low-cost method for synthesizing graphene nanosheet/chitosan (GNS/CS) composites. The method involved (1) exfoliating graphite to prepare graphite intercalation compounds (GICs) using environment-friendly ultrasonic energy and intercalating techniques, (2) preparing a high-concentration GNS/CS dispersion from a mixture of GICs and CS, and (3) producing GNS/CS composites with varying GNS levels by adding the GNS/CS dispersion to CS. By incorporating 0.6wt% GNS into a CS matrix, the mechanical and electrochemical properties of the resultant GNS/CS composite were markedly improved. Maximum enhancements of 29% and 39% in the elastic modulus and hardness of CS, respectively, were obtained. Furthermore, GNS/CS redox peak currents increased sevenfold relative to a CS-modified electrode. POLYM. COMPOS., 39:4217-4223, 2018. (c) 2017 Society of Plastics Engineers