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Loss of antioxidants from polyethylene by evaporation and aqueous extraction
Author(s) -
Hawkins W. L.,
Worthington M. A.,
Matreyek W.
Publication year - 1960
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.1960.070030903
Subject(s) - extraction (chemistry) , polyethylene , carbon black , aqueous solution , nitrogen , evaporation , carbon fibers , polymer , antioxidant , chemistry , materials science , chemical engineering , organic chemistry , composite material , physics , natural rubber , composite number , engineering , thermodynamics
Polyethylene containing various types of antioxidants was either heated in a stream of nitrogen or placed in water maintained at several different temperatures under nitrogen. The polymer was then oxidized to determine how greatly the evaporation or extraction treatment had reduced the antioxidant effectiveness as compared with a control. Polymeric materials and carbon blacks were more completely retained than monomolecular organic compounds. The presence of carbon black did not greatly alter the rate of loss for any of these substances except Santonox, which was almost completely retained.