Citation
Brown P. S., . and Tinker A. J., . Factors affecting the NMR technique for estimation of crosslink density in rubber blends. pp. 286-295. ISSN 0127-7065
Abstract
The effects of cure system polymer molecular weight and restriction of swelling on the NMR spectra of swollen rubber vulcanisates have been investigated using a recently published technique. Within a single polymer type cis-polyisoprene or cis-potybutadiene the accelerated-sulphur cure systems produce vulcanisates having the same relationship between the volume fraction of rubber in the equilibrium swollen state (Vr) and a measure of line width H. Swelling to less than equilibrium uptake results in a higher H but the increase is a relatively weak function of degree of swelling and this permits confident use of the technique in the analysis of crosslink distribution in polymer blends.
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Abstract
The effects of cure system polymer molecular weight and restriction of swelling on the NMR spectra of swollen rubber vulcanisates have been investigated using a recently published technique. Within a single polymer type cis-polyisoprene or cis-potybutadiene the accelerated-sulphur cure systems produce vulcanisates having the same relationship between the volume fraction of rubber in the equilibrium swollen state (Vr) and a measure of line width H. Swelling to less than equilibrium uptake results in a higher H but the increase is a relatively weak function of degree of swelling and this permits confident use of the technique in the analysis of crosslink distribution in polymer blends.
Additional Metadata
| Item Type: | Article |
|---|---|
| AGROVOC Term: | Hevea rubber |
| AGROVOC Term: | Rubber |
| AGROVOC Term: | Polymers |
| AGROVOC Term: | NMR spectroscopy |
| AGROVOC Term: | Cross-linking |
| AGROVOC Term: | Blending |
| AGROVOC Term: | Sulphur |
| AGROVOC Term: | morphology |
| AGROVOC Term: | Chemical analysis (results) |
| AGROVOC Term: | Physical properties |
| Depositing User: | Ms. Suzila Mohamad Kasim |
| Last Modified: | 24 Apr 2025 06:28 |
| URI: | http://webagris.upm.edu.my/id/eprint/23515 |
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