文献类型：期刊文献

英文题名：Biomimetic galactomannan/bentonite/graphene oxide film with superior mechanical and fire retardant properties by borate cross-linking

作者：Tao, Yuheng[1] Huang, Chen[2] Lai, Chenhuan[1] Huang, Caoxing[1] Yong, Qiang[1]

第一作者：Tao, Yuheng

通信作者：Yong, Q[1]

机构：[1]Nanjing Forestry Univ, Coll Chem Engn, Jiangsu Coinnovat Ctr fficient Proc & Utilizat Fo, Nanjing 210037, Peoples R China;[2]Chinese Acad Forestry, Inst Chem Ind Forestry Prod, Nanjing 210042, Peoples R China

年份：2020

卷号：245

外文期刊名：CARBOHYDRATE POLYMERS

收录：;EI(收录号：20202508844569);Scopus(收录号：2-s2.0-85086442220);WOS:【SCI-EXPANDED(收录号:WOS:000552863700003)】；

基金：This work was supported by the National Key R&D Program of China (2016YFD0600803) and the Priority Academic Program Development of Jiangsu Higher Education Institution (PAPD). The authors also thank the National First-class Disciplines (PNFD) for supporting the work.

语种：英文

外文关键词：Galactomannan; Graphene oxide; Bentonite; In situ reduction; Co-assembly

摘要：With the great demand for high-strength integrated materials in various industries, products from renewable resources were expected to replace petroleum-based materials. Inspired by the hierarchical structure of nacre, in this work, bentonite and graphene oxide (GO) were incorporated into the galactomannan (GM) matrix to prepare a ternary nanocomposite, which was further cross-linked and strengthened with borate. The chemical structure of the composite was analyzed with SEM, FTIR, XPS and XRD, revealing a co-assembly reaction between GO, bentonite and GM, accompanied by the borate crosslinking. This synergistic strengthen effect resulted in a composite possessing a maximum tensile stress and toughness of 231.16 MPa and 4.53 MJ/m(3), respectively, harder than most of the previously reported hemicellulose composites. Moreover, the nanocomposites showed excellent fire retardant property with a limiting oxygen index of 46.8 % due to the introduction of bentonite and GO, which shows potential application in fire-protective insulation, packaging and coating.