Preparation and properties of transparent copolymers based on cyclotriphosphazene and styrene as potential flame-retardant optical resins
✍ Scribed by Ya-Ni Guo; Jin-Yang Ming; Chao-Yu Li; Jin-Jun Qiu; He-Qing Tang; Cheng-Mei Liu
- Publisher
- John Wiley and Sons
- Year
- 2011
- Tongue
- English
- Weight
- 381 KB
- Volume
- 121
- Category
- Article
- ISSN
- 0021-8995
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✦ Synopsis
Abstract
Transparent copolymers composed of hexa(allyl 4‐hydroxybenzoate) cyclotriphosphazene (compound 1) and styrene as potential halogen‐free, flame‐retardant optical resins were prepared by radical copolymerization. The thermal performances of the cured resins were studied with thermogravimetric analysis; the decomposition mechanism of the copolymers was investigated with integrated thermogravimetry–Fourier transform infrared analysis. Compared with conventional polystyrene, the synthesized copolymers exhibited a higher refractive index and a higher thermal stability both under nitrogen and air atmospheres at elevated temperature, and the visible‐light transmittance of the copolymers decreased slightly. With increasing ratio of compound 1 to styrene in the copolymers, the onset decomposition temperature and the char yield both increased gradually. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011