Effect of treating latex with some metal ions on storage hardening of natural rubber
Document Type
Article
Publication Date
1-1-1993
Abstract
Storage hardening of natural rubber is a complex phenomenon involving crosslinking reactions due to certain abnormal groups on the rubber chains. The various mechanisms put forward can each account for certain of the experimental observations. Recently, an ionic crosslinking mechanism involving carboxylate and metal ions was proposed. It is being investigated by treating latex with a series of selected cations. While monovalent cations are found to have no effect on the crosslinking reaction, some divalent cations are able to reduce the storage hardening. Certain transition metal ions catalysed the degradation of natural rubber. Infra-red spectra show that the main chain structure remains the same after the degradation, and the abnormal groups appear unaffected.
Keywords
Storage hardening, Aldehyde groups, Epoxide groups, Ionic crosslink, Effects of metal ions, Degradation
Corp List
Dept of Chemistry, University of Malaya
Divisions
CHEMISTRY
Publication Title
Polymer
Volume
34
Issue
10
Publisher
Elsevier