Fabrication of 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide-decorated fullerene to improve the anti-oxidative and flame-retardant properties of polypropylene. (15th February 2020)

• Record Type: Journal Article
• Authors: Guo, Zhenghong; Wang, Zilu; Fang, Zhengping
• Is Part Of: Composites. Number 183(2020)
• Publication Date: 2020-02-15
• Subjects: Fullerene (C60) -- Free radical -- Oxidation -- Flame retardant; Composite materials -- Periodicals; Materials science -- Periodicals; Composite materials; Periodicals; Electronic journals; 620.118
• DOI: 10.1016/j.compositesb.2019.107672
• Languages: English
• ISSNs: 1359-8368

Abstract

Abstract: Fullerene (C60 ) is readily to capture chain radicals and delays the scission of macromolecular chains during the degradation or combustion of polymers, because of its high reactivity with free radicals. In this work, C60 was functionalized with 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO), trying to combine their free radical-trapping effects both in gaseous phase and in condensed phase. Through an addition reaction between C60 and DOPO, DOPO has decorated onto the surface of C60 via P–H bond at the molar ratio of 1:1. From the images of transmission electron micrographs (TEM) and scanning electron microscopy (SEM), the introduction of DOPO onto C60 surface prevented C60 from clumping together and achieved a looser morphology. Thermogravimetry (TG), differential scanning calorimetry (DSC) and cone calorimetry measurements showed that compared with pristine C60, DOPO- d -C60 further increased the anti-oxidative properties and restrained the combustion process of polypropylene.