Influences of coagulam maturation time of rubber latex coagulated with formic acid and microorganism on the effective storage time of natural rubber (Record no. 61376)
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| 000 -LEADER | |
|---|---|
| fixed length control field | 02386nam a2200217Ia 4500 |
| 100 ## - MAIN ENTRY--AUTHOR NAME | |
| Personal name | Wang Y Z |
| 245 #0 - TITLE STATEMENT | |
| Title | Influences of coagulam maturation time of rubber latex coagulated with formic acid and microorganism on the effective storage time of natural rubber |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT) | |
| Name of publisher | Journal of Rubber Research |
| Year of publication | 2014 |
| 300 ## - PHYSICAL DESCRIPTION | |
| Number of Pages | 233-244 |
| 500 ## - GENERAL NOTE | |
| General note | Source Year: 2014 |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc | Fresh NR latex was coagulated using formic acid and microorganism. The resulting coagula were matured at various conditions, followed by creping, size reduction and drying at 115 degree C for 5 hours. The dried coagula were then scanned using differential scanning calorimetry (DSC) and aged at various ageing times at 70 degree C. The effective storage time (i.e. storage life) of the coagula was evaluated through heat accelerated storage ageing combined with the Doyle-Ozawa equation and the heat ageing life equation. The results showed that the effective storage time of natural rubber prepared by the coagulum of fresh latex coagulated with formic acid and matured for 6, 12, 18 and 24 h respectively increased to 45.6 years from 23.2 years at 30 degree C, and increased to 100.5 years from 46.7 years at 25 degree C. The effective storage time of natural rubber prepared by the coagulum of fresh latex coagulated with microorganisms and matured for 6, 12, 18 and 24 h respectively increased to 83.3 years from 57.7 years at 30 degree C, and increased to 206.3 years from 132.8 years at 25 degree C. Both effective storage time of natural rubbers coagulated with formic acid and microorganism increased with the prolonging of coagulum maturation time. The effective storage time of NR from the coagulum matured for 6-12 h increased fast, the effective storage time of NR prepared by the coagulum matured for 12-18 h increase slowly and the increase in the effective storage time of NR prepared by the coagulum matured for 18-24 h tend to be flat. The effective storage time of natural rubber coagulated with microorganisms is obviously longer than that of natural rubber coagulated with formic acid in the same storage conditions. |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical Term | Ageing |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical Term | Coagulum maturation |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical Term | Effective storage time |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical Term | Fresh latex |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical Term | Natural Rubber |
| 700 ## - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Huang H H |
| 700 ## - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Zhang B L |
| 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 | 17/03/2015 | Volume 17, Issue 4 | Journals |