Effects of environment and composition on degradation of Guayule rubber (Record no. 58325)
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| 000 -LEADER | |
|---|---|
| fixed length control field | 01512nam a2200169Ia 4500 |
| 100 ## - MAIN ENTRY--AUTHOR NAME | |
| Personal name | Schloman W W |
| 245 #0 - TITLE STATEMENT | |
| Title | Effects of environment and composition on degradation of Guayule rubber |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT) | |
| Name of publisher | Journal of Applied Polymer Science |
| Year of publication | 1996 |
| 300 ## - PHYSICAL DESCRIPTION | |
| Number of Pages | 1015-1023 |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc | Bales of antioxidant-stabilized guayule rubber underwent significant losses in bulk viscosity when stored under ambinent comditions at an Arizona processing facility. Previous work implicated the unsaturated fatty acid esters present in entrained resin as promoters of such degradation. Ageing studies as functions of storage temperature and unsaturated acid ester content were carried out on both bulk rubber and rubber-resin solution (miscella) for cultivar AZ-101. The rate of thermo-oxidative degradation, determined as a function of Mooney viscosity, was increased by the addition of unsaturated ester. Anaerobic degradation was not affected in this way. The activation energy of chain thermolysis was found to be 116 +_ 6kJ/mol (28 +_ 1kcal/mol). At temperatures above 60 C, chain recombination successfully competed with chain scission in lower viscosity rubber. The rate of thermo-oxidative degradation was substantially higher in a typical process miscella. A hindered amine antioxidant significantly reduces chain scission under these conditions. |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical Term | Guayule rubber |
| 700 ## - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Beinor R T |
| 700 ## - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Hilton A S |
| 700 ## - ADDED ENTRY--PERSONAL NAME | |
| Personal name | McIntyre D |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | Journals |
| Withdrawn status | Lost status | Damaged status | Not for loan | Home library | Current library | Shelving location | Date acquired | Serial Enumeration / chronology | Koha item type |
|---|---|---|---|---|---|---|---|---|---|
| Journals | RRII Library | RRII Library | Rubber general | 17/12/2021 | Volume 60, Issue 7 | Journals |