| Autor: |
Janowska, G., Janczak, T., Ślusarski, L. |
| Zdroj: |
Journal of Thermal Analysis and Calorimetry; December 1988, Vol. 33 Issue: 4 p1119-1128, 10p |
| Abstrakt: |
The effects of synthetic fatty acids (“Versatic 10”, average formula C11H22O2) and the cobalt salts of these acids (cobalt siccative) on the thermal properties of cis-1,4-polyisoprene were examined, using a rheometer and a derivatograph. It was found that both Versatic 10 and the cobalt siccative accelerate the peroxide vulcanization of the isoprene rubber considerably, simultaneously decreasing the cross-linking density and increasing the sol fraction content in the vulÇanizates. This is brought about by parallel radical and ionic decomposition of the peroxide initiator in the presence of these compounds. The addition of Versatic 10 or the cobalt siccative to the polyisoprene rubber does not alter the general character of its thermal changes, but decreases the temperatures of these processes and the degradation degree of the elastomer. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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