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Determination of the hindered amine additive CGL‐144 in polypropylene by high‐performance liquid chromatography
Author(s) -
Schabron J. F.,
Bradfield D. Z.
Publication year - 1981
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.1981.070260733
Subject(s) - polypropylene , high performance liquid chromatography , chromatography , polypropylene glycol , detection limit , chloroform , phase (matter) , materials science , polymer , amine gas treating , ammonia , ultraviolet , chemistry , analytical chemistry (journal) , organic chemistry , composite material , optoelectronics , polyethylene glycol
A method was developed to determine CGL‐144 (Tinuvin 144) in polypropylene. Polypropylene pellets were dissolved in hot decalin. The solution was cooled to precipitate the polymer. A portion of the filtered extract solution was injected onto a normal‐phase high‐performance liquid chromatography (HPLC) system consisting of a μ‐Porasil stationary phase and a chloroform:ethanol:ammonia (95:5:0.05) mobile phase. The amount of CGL‐144 was determined by peak height measurement from an ultraviolet absorption detector set at 280 nm. Injections could be made every 10 min. The limit of detection for the method as described is 0.06% CGL‐144 in polypropylene. There are no known interferences with this method.