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Analysis of aromatic antioxidants and ultraviolet stabilizers in polyethylene using high‐temperature extraction with low boiling solvent
Author(s) -
Macko T.,
Furtner B.,
Lederer K.
Publication year - 1996
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(19961226)62:13<2201::aid-app3>3.0.co;2-n
Subject(s) - polyethylene , polymer , dissolution , solvent , crystallinity , chromatography , detection limit , materials science , extraction (chemistry) , chemistry , heptane , organic chemistry , composite material
A simple procedure for analysis of aromatic antioxidants and UV stabilizers is described: dissolution of polyethylene in n ‐heptane at temperature 160°C and pressure 0.5 MPa, precipitation of the polymer after a cooling of the solution, filtration of the obtained solution into an injection syringe, and injection into a silica gel column flushed with mobile phase n ‐heptane plus polar modifier. The eluted additive is detected with a uv detector. Application of the procedure on quantitative determination of Irganox 1330 in PE‐MD demonstrates that the above procedure has high recovery of the antioxidant, good reproducibility of the analysis ( σ = 1.9%), and a very low detection limit of 0.013 mg/1 g polymer. The described procedure may be easily adjusted for the analysis of many other additives in semicrystalline polyolefins. © 1996 John Wiley & Sons, Inc.