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Stabilization of isotactic polypropylene. Problems bound to the interactions of stabilizers with pigments and fillers
Author(s) -
Vaillant D.,
Lacoste J.,
Lemaire J.
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(19970718)65:3<609::aid-app21>3.0.co;2-q
Subject(s) - tacticity , talc , polypropylene , induction period , adsorption , materials science , fourier transform infrared spectroscopy , titanium dioxide , polymer , durability , polymer chemistry , amine gas treating , composite material , chemical engineering , chemistry , organic chemistry , engineering , polymerization , catalysis
The efficiency of conventional Hindered Amine Stabilizers (HAS) can be significantly reduced by their adsorption on other additives or fillers present in the polymer. The present article reports on the effect of titanium dioxide, phtalocyanine blue, and talc on the thermal and the photo stabilizations of isotactic polypropylene (iPP) by HAS. The durability of iPP was measured by the length of the induction period preceding the development of carbonyl groups by FTIR spectroscopy. The adsorption of HAS on pigments and fillers was revealed by the precise analysis of the carbonyl band of the ester group of HAS. © 1997 John Wiley & Sons, Inc. J Appl Polm Sci 65:609–615, 1997