NR latex particle size and its molecular weight from young and mature Hevea trees (Record no. 64152)
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| 000 -LEADER | |
|---|---|
| fixed length control field | 01419nam a2200169Ia 4500 |
| 100 ## - MAIN ENTRY--AUTHOR NAME | |
| Personal name | Kovuttikulrangsie Savanee |
| 245 #0 - TITLE STATEMENT | |
| Title | NR latex particle size and its molecular weight from young and mature Hevea trees |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT) | |
| Name of publisher | Journal of Rubber Research |
| Year of publication | 1999 |
| 300 ## - PHYSICAL DESCRIPTION | |
| Number of Pages | 150-159 |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc | The age of young NR Hevea trees has an influence on the size of latex particles. Young seedling trees aged less than 3 year had small rubber particles of sizes less than 1mm, while mature trees showed particle sizes of up to 4mm (from 0.04mm to 4 mm). NR latex particles from virgin trees of clones RRIM 600, aged from 1 to 7 years showed the average particle size distribution of about 0.30 mm to 0.65 mm. The average molecular weight (Mw) dramatically increased from 3.3 X 10 5 to 12.0 X 10 5. The polydispersity (Mw/Mn) or molecular weight distribution of rubber was remarkably wide, between 3 and 10. Different clones of 25-year-old (NATAWE 208, AVROS 2037, RRIC 6, GT 1, PR 255, PR 261 and KRS 156) regularly tapped trees presented mode average particle sizes of about 1.0 mm. The average molecular weight (Mw) was from about 6.7 X 10 5 to 3.0 X 10 6 and the polydispersity (Mw/Mn) was extremely extensive between 5 and 11. |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical Term | Hevea brasiliensis |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical Term | Hevea latex |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical Term | NR latex particle size |
| 700 ## - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Tanaka Yasuyuki |
| 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| Withdrawn status | Lost status | Damaged status | Not for loan | Home library | Current library | Shelving location | Date acquired | Serial Enumeration / chronology |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 chemistry | 17/12/2021 | Volume 2, Issue 3 | Journals |