Distribution of crosslinks between the phases of vulcanised ENR 25/cis-BR blends

Brown P. S., . and Tinker A. J., . Distribution of crosslinks between the phases of vulcanised ENR 25/cis-BR blends. pp. 87-95. ISSN 0127-7065

The recently developed NMR method of rubber blend analysis has been applied to gum vulcanisate blends of epoxidised natural rubber (ENR) and cis-1 4 poly butadiene (BR). It was observed that the degree of crosslinking in each of the two rubbers of the blend was different from that found in the analogous single polymer vulcanisates the ENR having increased crosslink levels while the BR had reduced crosslink levels. This difference has been quantified in terms of the curative levels required to give vulcanisates of the individual rubbers the same crosslink density as found in that component in the blends.

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Abstract

The recently developed NMR method of rubber blend analysis has been applied to gum vulcanisate blends of epoxidised natural rubber (ENR) and cis-1 4 poly butadiene (BR). It was observed that the degree of crosslinking in each of the two rubbers of the blend was different from that found in the analogous single polymer vulcanisates the ENR having increased crosslink levels while the BR had reduced crosslink levels. This difference has been quantified in terms of the curative levels required to give vulcanisates of the individual rubbers the same crosslink density as found in that component in the blends.

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Item Type:	Article
AGROVOC Term:	Natural rubber
AGROVOC Term:	Rubber
AGROVOC Term:	analysis
AGROVOC Term:	Epoxides
AGROVOC Term:	Vulcanization
AGROVOC Term:	Cross-linking
AGROVOC Term:	Blending
AGROVOC Term:	Polymers
AGROVOC Term:	Physical properties
AGROVOC Term:	Chemical analysis (methods)
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	24 Apr 2025 06:28
URI:	http://webagris.upm.edu.my/id/eprint/23475

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