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Molecular weight changes during polyolefin autoxidation
Author(s) -
Reich Leo,
Stivala S. S.
Publication year - 1968
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.1968.070120905
Subject(s) - polybutene , polyolefin , autoxidation , infrared spectroscopy , viscosity , polypropylene , intrinsic viscosity , materials science , polymer chemistry , thermodynamics , thermal oxidation , thermal , chemistry , organic chemistry , composite material , polymer , physics , layer (electronics) , silicon
Expressions were derived relating changes of intrinsic viscosity to reaction time, based on a scheme previously presented for the uncatalyzed, uninhibited thermal oxidation of polyolefins. A value of the kinetic parameter A may be obtained from these expressions by using an iterative type of procedure and employing data presented by other workers for the oxidation of atactic polybutene‐1. This value of A was compared with the corresponding value obtained by the authors from rate of carbonyl formation studies in oxidation of atactic polybutene‐1 by means of infrared absorption spectroscopy methods. The good agreement between the values of A obtained from the two different experimental techniques employed lends further support to the validity of the scheme used and the expressions derived therefrom.