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Development of a quantitative analysis method for polypropylene additives using on‐line SFE/SFC
Author(s) -
Martial Frédérique,
Huguet Jovanka,
Bunel Claude
Publication year - 1999
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/(sici)1097-0126(199904)48:4<299::aid-pi148>3.0.co;2-5
Subject(s) - polypropylene , polymer , supercritical fluid , materials science , particle size , matrix (chemical analysis) , chromatography , supercritical fluid extraction , extraction (chemistry) , calibration curve , particle (ecology) , analytical chemistry (journal) , supercritical fluid chromatography , calibration , chemical engineering , chemistry , gas chromatography , composite material , organic chemistry , detection limit , engineering , oceanography , statistics , mathematics , geology
A procedure is described for the quantitative analysis of(Irganox 1076, Irganox 1010 and Tinuvin 327) inpolypropylene matrices using on‐line SFE/SFC. The effectsof pressure, extraction time, type of matrix (particle orfilm) and matrix parameters (particle size, film thickness,sample weight) are studied in order to optimize supercriticalfluid extractions. The collection efficiency is determined from therecovery of known concentrations of compounds. About 30% ofextracts are lost during collection. Calibration curves for polymersamples are established from ground polymer (particle size 100μm< d <160 μm) and polymer film (30 μmthickness) under the optimum supercritical fluid extractionconditions. The three additives are incorporated together intopolymer at concentrations ranging from 0.04% to 0.6%.Very poor recoveries are obtained from ground samples, but weobserved very good recoveries from films (45–70%depending on the additive) and calibration curves wereestablished for the different antioxidants. © 1999 Society of Chemical Industry