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The effect of polymerization catalysts on the rate of degradation of isotactic polypropylene
Author(s) -
Ryshavy D.,
Balaban L.
Publication year - 1962
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.760020107
Subject(s) - tacticity , degradation (telecommunications) , catalysis , polymerization , polypropylene , materials science , oxygen pressure , chemical engineering , oxygen , degree of polymerization , polymer chemistry , organic chemistry , composite material , chemistry , polymer , telecommunications , computer science , engineering
Abstract One of the reasons for purification of low‐pressure polymerization products is the assumed degradation effects of retained catalysts. Degree of degradation was determined from the change in viscosity number. Effects of catalysts on active sights and deactivation were noted along with degradation in the presence of air and oxygen in addition to determining, the effect of antioxidants. Individual components of the catalyst may have the ability to intensify the effect of any antioxidant and affect the rate of degradation where catalyst influence was better defined in the presence of oxygen.