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Effects of polyethylene molecular structure on peroxide crosslinking of low density polyethylene
Author(s) -
Bremner T.,
Rudin A.,
Haridoss S.
Publication year - 1992
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.760321405
Subject(s) - peroxide , materials science , vulcanization , polyethylene , polymer , low density polyethylene , polymer chemistry , creep , organic peroxide , chemical engineering , composite material , organic chemistry , copolymer , chemistry , natural rubber , engineering
The effects of molecular structure on the dicumyl peroxide crosslinking of two low density polyethylenes have been studied. Peroxide efficiency was determined largely by the content of terminal vinyls in the two polymers. Differences in molecular weight distribution and branch content had comparatively little influence on the gel content but hot creep resistance of the vulcanized materials was affected. Scorching was affected, also, by the presence of vinyl unsaturations in the polymer.