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| Title: | Degradative studies related to the Plasticity Retention Index of the Standard Malaysian Rubber Scheme. II. Kinetics of degradation |
| Authors: | Sambhi, M. S. |
| Issue Date: | 1988 |
| Citation: | Journal of Natural Rubber Research, 3 (2), p. 107-114 |
| Abstract: | Linear relationships obtained between intrinsic viscosities and Wallace plasticity data make it possible to express plasticity data in terms of number-average degrees of polymerisation and to use plasticity data in a quantitative fashion. The successful use of kinetic expressions that do not incorporate diffusion parameters lends support to the findings that, for early stages of thermal-oxidative degradation, diffusion effects are not of significance, particularly for air-saturated natural rubber samples. If initially, chain scission of natural rubber follows zero-order or pseudo-zero-order kinetics and becomes autocatalytic in due course, then, it is likely that the degradation plasticity data can be represented by typical first-order type of kinetic equations. However, deviations are bound to occur as chain scission of natural rubber can follow varying kinetic paths. |
| License: | http://www.oceandocs.org/license |
| URI: | http://agris.upm.edu.my:8080/dspace/handle/0/15622 |
| Related document: | http://vitaldoc.lgm.gov.my:8060/vital/access/servi... |
| ISSN: | 0127-7065 |
| Appears in Collections: | Publications
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