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Studies on the role of organophosphites in polyester blends: I. 31 P nuclear magnetic resonance spectroscopy
Author(s) -
Carduner K. R.,
Carter R. O.,
Cheung M.F.,
Golovoy A.,
Van Oene H.
Publication year - 1990
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.1990.070400529
Subject(s) - magic angle spinning , polycarbonate , pentaerythritol , polyester , materials science , hydrolysis , nuclear magnetic resonance spectroscopy , polymer , nuclear magnetic resonance , polymer chemistry , chemistry , nuclear chemistry , organic chemistry , composite material , physics , fire retardant
The utility of 31 P magic angle spinning (MAS) nuclear magnetic resonance (NMR) for the identification of organophosphite polymer additives, their hydrolysis products, and for the determination of their concentration is demonstrated for bis‐(2,4‐di‐ t ‐butylphenyl) pentaerythritol diphosphite (BTBP) in polycarbonate. This additive undergoes a complex process of hydrolysis that leds to the formation of at least three new phosphous species. High‐resolution solution 31 P NMR is used to help in the identification of the products of the stailizer chemistry.