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Stabilization of poly(vinyl chloride) with preheated metal stearates and costabilizers. II. Use of a polyol
Author(s) -
Benavides R.,
Edge M.,
Allen N. S.,
Téllez M. M.
Publication year - 1998
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(19980404)68:1<11::aid-app2>3.0.co;2-q
Subject(s) - pentaerythritol , vinyl chloride , polyol , polyvinyl chloride , metal , chemistry , induction period , polymer chemistry , degradation (telecommunications) , organic chemistry , polymer , polyurethane , catalysis , copolymer , telecommunications , fire retardant , computer science
Continuing with the evaluation of costabilizers along with preheated metal stearates to stabilize poly(vinyl chloride) (PVC), pentaerythritol was chosen as a long‐term costabilizer. During normal stabilization conditions, the polyol enhances the induction time to degradation but produces large amounts of polyenes. The use of the preheated mixture of metal soaps and preheated ZnSt 2 enhanced even more such times, while preheated CaSt 2 reduced them. The same effect was seen with the β‐diketone; and, as in that case, the results seems to be the sum of both separated effects. Evaluations of induction times to degradation, carbonyl formation, visible reflectance, and UV‐visible and fluorescence spectroscopic techniques support these findings. © 1998 John Wiley & Sons, Inc. J Appl Polym Sci 68:11–27, 1998