Premium
Peroxide modification of linear low‐density polyethylene: A comparison of dialkyl peroxides
Author(s) -
Bremner Tim,
Rudin Alfred
Publication year - 1993
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.1993.070490504
Subject(s) - linear low density polyethylene , peroxide , curing (chemistry) , organic peroxide , polyethylene , modulus , decomposition , materials science , polymer chemistry , dynamic mechanical analysis , linear relationship , composite material , chemistry , organic chemistry , polymer , copolymer , mathematics , statistics
A commercial‐grade LLDPE resin was cross‐linked using three different dialkyl peroxides, at three different concentrations. The peroxides were ranked in order of their Cross‐linking efficiency and their effectiveness at increasing the storage modulus of the virgin resin at the cure temperature. The chemical mechanism by which the cross‐linking occurs is shown to be closely related to the changes in concentrations of reactive vinyl species on the polyethylene molecules, which follows well with proposed mechanisms of previous publications. Finally, a direct relationship is shown to exist between the rate of peroxide decomposition and the rate of increase in storage modulus of the rubbery modified resin during the curing reaction. © 1993 John Wiley & Sons, Inc.