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Phosphate‐containing flame‐retardant polymers with good compatibility to polypropylene. I. The effect of phosphate structure on its thermal behavior
Author(s) -
Chiang WenYen,
Hu Howard C.H.
Publication year - 2001
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1535
Subject(s) - thermogravimetric analysis , fire retardant , polymer , char , materials science , phosphate , fourier transform infrared spectroscopy , polymer chemistry , thermal decomposition , polyvinyl chloride , vinyl chloride , vinyl acetate , thermal analysis , chemical engineering , glass transition , polypropylene , pyrolysis , chemistry , organic chemistry , composite material , copolymer , thermal , physics , meteorology , engineering
Phosphate‐containing flame‐retardant polymers were synthesized via a partial‐substitution reaction of poly(vinyl acetate) with stearylphosphonic chloride (SPPC) and diethylchlorophosphate in various substitution ratios. SPPC had been previously synthesized from phosphonic dichloride and stearyl alcohol. The synthesized SPPC and the flame‐retardant polymer products were characterized by Fourier transform infrared (FTIR) spectra analysis. The quantitative analysis of phosphorus in the polymer products was carried out by EDS (Energy Dispersion Spectrummeter) analysis. The real substitution ratios of the polymer products were estimated by the atomic number ratio of carbon and phosphate in products from EDS data. Variations in the glass‐transition temperature and thermal‐decomposition temperature of the products were investigated. The char of polymer products produced after thermogravimetric analysis (TGA) was also analyzed by FTIR, and the results show that different phosphate substitution leads to different char developments during the heating of TGA. © 2001 John Wiley & Sons, Inc. J Appl Polym Sci 81: 1125–1135, 2001