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A novel photoadditive for polyolefin photostabilization: hindered amine light stabilizer
Author(s) -
Desai Shrojal M.,
Pandey Jitendra K.,
Singh R.P.
Publication year - 2001
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/1521-3900(200105)169:1<121::aid-masy121>3.0.co;2-h
Subject(s) - polyolefin , polypropylene , materials science , polymer chemistry , amine gas treating , succinic anhydride , stabilizer (aeronautics) , polyethylene , acrylate , grafting , melt flow index , polymer , polymerization , copolymer , chemical engineering , organic chemistry , chemistry , composite material , mechanical engineering , layer (electronics) , engineering
Hindered‐amine light stabilizers were surface anchored to polyethylene and polypropylene thin films by: i) direct photo‐grafting of 1,2,2,6,6‐pentamethyl piperidinyl‐4‐acrylate onto the surface and ii) by reacting of 1,2,2,6,6‐pentamethyl‐4‐piperidinol with succinic anhydride functionalized polyolefin surface. The samples were exposed to UV irradiation in air and the oxidative‐degradation of the polymers was studied with FT‐IR spectroscopy. The photo‐stability of surface anchored Hindered‐amine stabilizers (HAS) was compared with films stabilized with commercial HAS by melt blending. The results of the study evince superiority of surface anchored HAS over that of melt blended polyolefins.