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Study on the thermal degradation behavior and flame‐retardant property of polylactide/PEDPP blends
Author(s) -
Lin HaiJuan,
Han LiJing,
Wang XueMei,
Bian YiJie,
Li YueSheng,
Dong LiSong
Publication year - 2013
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/pat.3120
Subject(s) - limiting oxygen index , materials science , fire retardant , thermogravimetric analysis , fourier transform infrared spectroscopy , pyrolytic carbon , thermal decomposition , chemical engineering , decomposition , polyester , polymer chemistry , pyrolysis , composite material , organic chemistry , char , chemistry , engineering
A phosphorus‐containing polyester, poly (ethylene diglycol phenylphosphinate) (PEDPP) was synthesized from phenylphosphonic dichloride and ethylene diglycol. The structure of PEDPP has been determined by Fourier transform infrared (FTIR) spectroscopy, 1 H nuclear magnetic resonance and matrix assisted laser desorption ionization‐time of flight‐mass spectrometer. A series of polylactide (PLA) blends with various content of PEDPP as flame retardant was prepared by direct melt compounding; the PLA/PEDPP blend is partially miscible. PEDPP is an effective flame retardant for PLA. The limiting oxygen index values increased from 19.7% for pure PLA to 29.0% for the blend containing 10wt% PEDPP. Thermogravimetric analysis‐FTIR analysis indicated that the PEDPP affected the pyrolytic decomposition process of PLA, which is established by the change of the pyrolytic decomposition rate and the gross mass of gaseous fuel formation. The pyrolytic decomposition activation energies of PLA and PLA/10%PEDPP were estimated via Flynn–Wall–Ozawa method. Copyright © 2013 John Wiley & Sons, Ltd.