Effect of network heterogeneities on the physical properties of nitrile rubbers cured with dicumyl peroxide

The scope of this study is to continue our earlier studies on the peroxide curing of diene elastomers. The effect of peroxide content and temperature on the curing and mechanical properties of NBR and H‐NBR rubbers with different acrilonitrile content was evaluated. Experimental evidence indicates t...

Full description

Saved in:
Bibliographic Details
Published in:Journal of applied polymer science 2007-03, Vol.103 (5), p.3377-3382
Main Authors: GONZALEZ, L, RODRIGUEZ, A, MARCOS-FERNANDEZ, A, VALENTIN, J. L, FERNANDEZ-TORRES, A
Format: Article
Language:English
Subjects:
Applied sciences
Chemical reactions and properties
crosslinking
Crosslinking, vulcanization
Exact sciences and technology
networks
nitrile rubber
Organic polymers
physical properties
Physicochemistry of polymers
vulcanization
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The scope of this study is to continue our earlier studies on the peroxide curing of diene elastomers. The effect of peroxide content and temperature on the curing and mechanical properties of NBR and H‐NBR rubbers with different acrilonitrile content was evaluated. Experimental evidence indicates that saturated rubbers behave as expected whereas in unsaturated nitrile rubbers ion of allylic hydrogen and addition to the double bonds can act as mechanism of crosslinking, the weight of each mechanism is dependent of DCP content and curing temperature. The addition mechanism produces densely crosslinked zones or clusters, generating a heterogeneous network with effect on the vulcanizate properties. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 103: 3377–3382, 2007
ISSN:0021-8995
1097-4628
DOI:10.1002/app.24696