文献类型：期刊文献

英文题名：Mechanical reinforcement of room-temperature-vulcanized silicone rubber using modified cellulose nanocrystals as cross-linker and nanofiller

作者：Yang, Xinxin[1] Li, Zhaoshuang[1] Jiang, Zhaoyu[1] Wang, Siheng[1] Liu, He[1] Xu, Xu[2] Wang, Dan[1] Miao, Yingchun[2] Shang, Shibin[1] Song, Zhanqian[1]

第一作者：Yang, Xinxin

通信作者：Liu, H[1];Xu, X[2]

机构：[1]Chinese Acad Forestry, Key Lab Chem Engn Forest Prod,Coinnovat Ctr Effic, Natl Engn Lab Biomass Chem Utilizat,Natl Forestry, Key Lab Biomass Energy & Mat,Inst Chem Ind Forest, Nanjing 210042, Jiangsu, Peoples R China;[2]Nanjing Forestry Univ, Jiangsu Prov Key Lab Chem & Utilizat Agroforest B, Coll Chem Engn, Adv Anal & Testing Ctr, Nanjing 210037, Jiangsu, Peoples R China

年份：2020

卷号：229

外文期刊名：CARBOHYDRATE POLYMERS

收录：;EI(收录号：20194807740061);Scopus(收录号：2-s2.0-85075333587);WOS:【SCI-EXPANDED(收录号:WOS:000501796600075)】；

基金：This work was supported by the Major Program of the National Natural Science Foundation of China [Grant No.31890774]; Fundamental Research Funds of CAF [CAFYBB2017QB007]; Dongguan Academician Workstation Project [DGYSZ-2017-294].

语种：英文

外文关键词：Cellulose nanocrystals; Nanocomposites; Mechanical properties; Optical performance

摘要：Despite the excellent properties of room-temperature-vulcanized silicone rubber (RTVSR), such as good temperature resistance, low toxicity, and low cost, its industrial application is limited owing to its poor mechanical properties. Herein, we employed cellulose nanocrystals modified by acid hydrolysis and reaction with 3-iso-cyanatopropyltrimethoxysilane (ICNCs) as the cross-linking agent to reinforce RTVSR. Structural analyses of ICNCs confirmed the chemical modification of the cellulose nanocrystal surface and preservation of the crystalline structure. The ICNCs improved the thermostability of RTVSR and also acted as a nanoscale filler in the RTVSR/ICNCs nanocomposite. The thermostability and mechanical properties of RTVSR/ICNCs expectedly improved with increased ICNC content. Moreover, compared with unmodified silicone rubber, RTVSR/ICNCs nanocomposites exhibited high haze and high transparency. Our work indicates that ICNCs are well dispersed in the RTVSR matrix and effectively improve its properties.