Functionalization of Graphene Oxide with Polysilicone: Synthesis, Characterization and Fire Retardancy in Thiol-Ene Systems. Issue 5 (7th April 2021)

• Record Type: Journal Article
• Authors: Wu, Fangyi; Bao, Xiaohui; Xu, Huan; Kong, Delong; Wang, Jiangbo
• Is Part Of: Journal of macromolecular science. Volume 60:Issue 5(2021)
• Page Start: 339
• Page End: 349
• Publication Date: 2021-04-07
• Subjects: fire retardancy -- functionalization -- graphene oxide -- polyaminosilicone -- thiol-ene; Polymerization -- Periodicals; Polymers -- Periodicals; 530.413
• DOI: 10.1080/00222348.2020.1852689
• Languages: English
• ISSNs: 0022-2348

Abstract

Abstract: Functionalized graphene nanosheets (GO-PA) were synthesized by a facile covalent grafting of graphene oxide (GO) with polyaminosilicone (PA). The structure and morphology of GO-PA were characterized by various measurements. In order to compare the effects of adding GO and GO-PA to thiol-ene (TE), TE/GO and TE/GO-PA nanocomposites were prepared and their fire retardancies were evaluated. The results revealed that the addition of both GO and GO-PA could improve the fire retardancy and residual char of TE nanocomposites, but GO-PA performed much better than GO. Compared with pure TE, the peak heat release rate of the TE/GO-PA nanocomposite was decreased by 31.9% and its residual char was increased from 1.16 to 2.50 wt%. Furthermore, dynamic mechanical thermal analysis showed that the grafting of GO with PA improved the dispersion of the GO sheets in the TE matrix.