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Functionalization of polyorganophosphazenes. VII. Photooxidative stabilization of aryloxy‐substituted polyorganophosphazenes induced by grafting HALS groups through anhydride moieties
Author(s) -
Minto Francesco,
Borzatta Valerio,
Bertani Roberta,
Gleria Mario
Publication year - 1997
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/(sici)1097-4628(19970711)65:2<217::aid-app2>3.0.co;2-r
Subject(s) - phosphazene , polyphosphazene , succinic anhydride , grafting , polymer chemistry , surface modification , chemistry , chemical modification , materials science , organic chemistry , polymer
In this article, the general procedure for stabilizing polyorganophosphazenes against the damage induced in these substrates by photooxidation reactions under accelerated conditions is explored. This method is based on the preventive grafting of succinic anhydride groups onto selected polyphosphazenes induced by light excitation, followed by the reaction of the functionalized phosphazene substrates with amino‐terminated HALS groups. HALS moieties, in fact, are able to strongly inhibit the photooxidation of phosphazene films under accelerated conditions even when randomly attached to the polyphosphazene materials in very low amounts. © 1997 John Wiley & Sons, Inc. J Appl Polym Sci 65:217–231, 1997