Distribution of crosslinks between the phases of vulcanised ENR 25/cis-BR Blends
Material type:
TextPublication details: Journal of Natural Rubber Research 1991Description: 87-95Subject(s): Summary: Thre recently developed NMR method of rubber blend analysis 1,4 has been applied to gum vulcanizate blends of epoxidised natural rubber (ENR) and cis-1,4 polybutadiene (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 analoguous single polymer vulcanisates, the ENR having increased crosslink levels while the BR had reduced corsslink 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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Journals
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RRII Library | Volume 6, Issue 2 | Journals |
Thre recently developed NMR method of rubber blend analysis 1,4 has been applied to gum vulcanizate blends of epoxidised natural rubber (ENR) and cis-1,4 polybutadiene (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 analoguous single polymer vulcanisates, the ENR having increased crosslink levels while the BR had reduced corsslink 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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