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Thermal properties of wood reacted with a phosphorus pentoxide–amine system
Author(s) -
Lee HongLin,
Chen George C.,
Rowell Roger M.
Publication year - 2003
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.13408
Subject(s) - thermogravimetric analysis , phosphorus pentoxide , phosphorus , nuclear chemistry , materials science , alkyl , chemistry , amine gas treating , polymer chemistry , diammonium phosphate , organic chemistry , raw material
The objective of this research was to improve the fire‐retardant properties of wood in one treatment using a phosphorus pentoxide–amine system. Phosphorus pentoxide and 16 amines including alkyl, halophenyl, and phenyl amines were compounded in N,N ‐dimethylformamide and the resulting solutions containing phosphoramides were reacted with wood. The characteristics of phosphoramide‐reacted wood were analyzed by FTIR, energy‐dispersive X‐ray analysis, and elemental analysis. Fire retardancy of phosphoramide‐reacted woods was evaluated by DSC and thermogravimetric analysis (TGA). DSC demonstrated that the modification can lower the onset of an endotherm and decrease the heat of combustion and heat flow. TGA showed that most of the phosphoramide‐reacted woods had higher char yields than that of wood impregnated with diammonium phosphate.© 2003 Wiley Periodicals, Inc. J Appl Polym Sci 91: 2465–2481, 2004