Premium
Phosphorylation of phosphazenes and its effects on thermal properties and fire retardant behavior
Author(s) -
Allcock Harry R.,
Taylor Jonathan P.
Publication year - 2000
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.11245
Subject(s) - phosphonate , fire retardant , trimer , materials science , phosphate , polystyrene , polymer , polymer chemistry , thermal stability , organic chemistry , chemistry , composite material , dimer
Methods for the incorporation of phosphate and phosphonate units into the side groups of phosphazenes, at both the high polymeric and cyclic trimer levels, are described and evaluated. Halogenated organophosphates were used as the phosphorylating agents and were allowed to react with hydroxyl‐ or lithio‐functionalized phosphazenes. Well‐defined phosphorylated cyclic trimers were synthesized from the hydroxyl‐functionalized precursors, and these were examined as flame‐retardant additives to polystyrene. The thermal stabilities of the high polymers made by this route were analyzed by TGA.