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Effect of volatilization of stabilizers and oxidation products on polypropylene lifetimes
Author(s) -
Blumberg M.,
Boss C. R.,
Chien J. C. W.
Publication year - 1965
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.1965.070091204
Subject(s) - volatilisation , polypropylene , stabilizer (aeronautics) , polymer , materials science , accelerated aging , thermal oxidation , oxygen , thermal stability , polymer chemistry , chemical engineering , chemistry , composite material , organic chemistry , mechanical engineering , layer (electronics) , engineering
Three methods of measuring thermal oxidative stability of polypropylene have been compared. The oxygen absorption and the sealed tube tests give comparable results. The polymer lifetimes in circulating oven‐aging tests differ significantly from those obtained by the first two methods. The oven‐aging lifetime is aparently influenced to a large extent by the volatilization of the added stabilizer and of the oxidation products, the former decreases whereas the latter increases the polymer lifetime. The optimum composition of a synergistic stabilizer system was found to vary with the test method.