In situ epoxidization of natural rubber latex by performic acid and the kinetics of the reaction (Record no. 60930)
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| 000 -LEADER | |
|---|---|
| fixed length control field | 01598nam a2200205Ia 4500 |
| 100 ## - MAIN ENTRY--AUTHOR NAME | |
| Personal name | George B |
| 245 #0 - TITLE STATEMENT | |
| Title | In situ epoxidization of natural rubber latex by performic acid and the kinetics of the reaction |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT) | |
| Name of publisher | Indian Journal of Natural Rubber Research |
| Year of publication | 1992 |
| 300 ## - PHYSICAL DESCRIPTION | |
| Number of Pages | 179-187 |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc | Epoxidation of natural rubber latex stabilised with a nonionic surfactant was carried out with performica acid generated in situ. The reaction was performed at 30, 45, 50 and 60 degree C at a dry rubber content (DRC) of 20 and concentration of formic acid and hydrogen peroxide 0.955 and 3.75 modle dm3 respectively in the aqueous phase of the latex. Product characterization by 1H NMR and IR spectroscopic methods indicated significant influence of temperature on the extent of epoxidation as well as ring opening reactions. Epoxidation to the extent of 25-35 mole per cent could be reached without ring opening. The concentration of ring opened products at higher levels of epoxidation was found to be low. The reaction followed pseudo-first order kinetics with the formation of performic acid as the rate dtermining step. This was further confirmed by carrying out the reaction at 10 and 15 per cent DRC keeping the formic acid and hydrogen peroxide concentrations in the aqueous phase the same. |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical Term | Epoxidization |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical Term | Epoxidization kinetics |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical Term | Natural rubber latex |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical Term | Performic acid |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical Term | Ring opening reactions |
| 700 ## - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Abraham S |
| 700 ## - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Mathew N M |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | Journals |
| Withdrawn status | Lost status | Damaged status | Not for loan | Home library | Current library | Date acquired | Serial Enumeration / chronology | Koha item type |
|---|---|---|---|---|---|---|---|---|
| Journals | RRII Library | RRII Library | 17/12/2021 | Volume 5, Issue 1&2 | Journals |