Chemical degradation of natural rubber latex in acidic medium catalysed by CoCl2 and (NH4)2 Fe(SO4)2 (Record no. 55493)
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| 000 -LEADER | |
|---|---|
| fixed length control field | 01352nam a2200205Ia 4500 |
| 100 ## - MAIN ENTRY--AUTHOR NAME | |
| Personal name | Ibrahim S |
| 245 #0 - TITLE STATEMENT | |
| Title | Chemical degradation of natural rubber latex in acidic medium catalysed by CoCl2 and (NH4)2 Fe(SO4)2 |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT) | |
| Name of publisher | Journal of Rubber Research |
| Year of publication | 2015 |
| 300 ## - PHYSICAL DESCRIPTION | |
| Number of Pages | 61-71 |
| 500 ## - GENERAL NOTE | |
| General note | Source Year: 2015 |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc | Liquid natural rubber (LNR) is a derivative of natural rubber (NR) which has a molecular weight of less than 50,000 g/mol. In this study, LNR was prepared via chemical degradation reaction using hydrogen peroxide and sodium nitrite as reagents in latex solution. Compared to the reaction without catalyst, molecular weight of LNR obtained was found to decrease approximately three and two times in the presence of cobalt chloride (CoCl2) and ferrous ammonium sulphate ((NH4)2Fe(SO4)2), respectively. Using the method described, the degradation reaction generates functional groups such as hydroxyl and carbonyl in the LNR chains. In the presence of these catalyst, the hydroxyl groups are decreased and contrarily carbonyl groups in the LNR chains are increased. |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical Term | Cobalt chloride |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical Term | Ferrous ammonium sulphate |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical Term | Liquid natural rubber(LNR) |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical Term | Redox reaction |
| 700 ## - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Mustafa A |
| 700 ## - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Tan K S |
| 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| Withdrawn status | Lost status | Damaged status | Not for loan | Home library | Current library | Shelving location | Date acquired | Serial Enumeration / chronology |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 technology | 17/12/2021 | Volume 18, Issue 2 | Journals |