A NEW INTERPRETATION OF THE CROSS-LINKING MECHANISM OF NR WITH DICUMYL PEROXIDE

Authors
GONZALEZ L RODRIGEZ A MARCOS A CHAMORRO C
Citation
L. Gonzalez et al., A NEW INTERPRETATION OF THE CROSS-LINKING MECHANISM OF NR WITH DICUMYL PEROXIDE, Kautschuk und Gummi, Kunststoffe, 51(2), 1998, pp. 83-87
Citations number
23
Categorie Soggetti
Polymer Sciences","Engineering, Chemical
Journal title
Kautschuk und Gummi, Kunststoffe → ACNP
ISSN journal
09483276
Volume
51
Issue
2
Year of publication
1998
Pages
83 - 87
Database
ISI
SICI code
0948-3276(1998)51:2<83:ANIOTC>2.0.ZU;2-3
Abstract
This paper deals with the peroxide curing of NR. At high temperature a nd high DCP loading, changes in the crosslinking mechanism were observ ed. The results confirm that the crosslink efficiency might be >1. Und er these conditions both mechanisms, abstraction of an allylic hydroge n and addition to the double bond can take place. H-1 NMR, fracture an alysis and tensile stress data reveal that the compound with 3phr DCP crosslinked at 160 degrees C presents a non-uniform distribution of th e crosslinks in the network.