Some aspects on the crosslink reaction of natural rubber with dipentamethylene thiuram tetrasulfide

Authors
Gonzalez, L Rodriguez, A del Campo, A Marcos-Fernandez, A
Citation
L. Gonzalez et al., Some aspects on the crosslink reaction of natural rubber with dipentamethylene thiuram tetrasulfide, RUBBER CHEM, 73(1), 2000, pp. 89-100
Citations number
36
Categorie Soggetti
Organic Chemistry/Polymer Science","Material Science & Engineering
Journal title
RUBBER CHEMISTRY AND TECHNOLOGY
ISSN journal
00359475 → ACNP
Volume
73
Issue
1
Year of publication
2000
Pages
89 - 100
Database
ISI
SICI code
0035-9475(200003/04)73:1<89:SAOTCR>2.0.ZU;2-U
Abstract
The mechanism of vulcanization of natural rubber with the sulfurating agent dipentamethylene thiuram was studied. On the transformation from crosslink precursor to crosslink, the route via disproportionation is preferred. In the presence or absence of zinc oxide and stearic acid as activators, the f ormation of the crosslink precursor follows similar processes, while the ma in difference is in the reaction induction times. In addition, the desulfur ation reaction was favored by the presence of zinc oxide.