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Flame‐retardant and physical properties of poly(vinyl alcohol) chemically modified by diethyl chlorophosphate
Author(s) -
Lin JianSheng,
Chen Li,
Liu Ya,
Wang YuZhong
Publication year - 2012
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.34958
Subject(s) - vinyl alcohol , crystallinity , materials science , fire retardant , ultimate tensile strength , thermal stability , fourier transform infrared spectroscopy , polymer chemistry , chemical modification , attenuated total reflection , chemical engineering , alcohol , elongation , composite material , polymer , organic chemistry , chemistry , engineering
Phosphorylated poly(vinyl alcohol) (P‐PVA) was prepared via the modification of the pendent hydroxyl groups of poly(vinyl alcohol) (PVA) in the presence of diethyl chlorophosphate (DECP). Chemical structures of the P‐PVA were characterized by attenuated total reflection‐Fourier transform infrared, 1 H NMR, and 31 PNMR spectra. The formed P‐PVA showed good flame retardance, improved thermal stability, enhanced hydrophilicity, decreased tensile strength, and increased elongation at break compared with PVA. The crystallinity of P‐PVA was much lower than that of PVA, and it decreased with the increase of phosphorus content. The reasons for the obvious differences between the aforementioned properties of PVA and P‐PVA were investigated and discussed. © 2012 Wiley Periodicals, Inc. J Appl Polym Sci, 2012