%0 Journal Article
%T A study on preparation of modified Graphene Oxide and flame retardancy of polystyrene composite microspheres
%A Meng Zhu
%A Shaobo Dong
%A Yazhen Wang
%A Yingbo Qing
%A Yu Sun
%J Designed Monomers and Polymers
%D 2020
%R https://doi.org/10.1080/15685551.2020.1720934
%X ABSTRACT In this paper, the ODOPM, a kind of 9, 10-dihydro-9-oxygen-heterooxy-10-phosphoro-10-oxygen (DOPO) derivative, was obtained by hydroxylation of DOPO. Further, a phosphorus nano-flame retardant (GO-ODOPM) was obtained by addition reaction with carboxylated Graphite Oxide (GO-COOH). And then Graphene Oxide/polystyrene (GO-ODOPM/PS) composite microspheres were obtained via suspension polymerization of styrene with GO-ODOPM. The decrease of the peak heat release rate (HRR) and total heat release rate (THR) for the GO-ODOPM/PS composite microspheres was obtained when the content of the additives was only 3.0 wt% is more than 36.2% and 33.6% compared with the pure PS microspheres, respectively. Thermogravimetric (TG), dynamic rheology and carbon residue analysis were used to study the flame-retardant mechanism of GO-ODOPM in PS microspheres. The results revealed that the addition of GO-ODOPM obviously reduced the fire hazard of polystyrene (PS) microspheres. Thus, this work provided a feasible method to design efficient flame retardants for enhancing fire safety of polymers
%U https://www.tandfonline.com/doi/full/10.1080/15685551.2020.1720934