Estimation of dilute solution viscosity parameters of rubber seed oil alkyds (Record no. 58824)
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| 000 -LEADER | |
|---|---|
| fixed length control field | 01787nam a2200205Ia 4500 |
| 100 ## - MAIN ENTRY--AUTHOR NAME | |
| Personal name | Okieimen F E |
| 245 #0 - TITLE STATEMENT | |
| Title | Estimation of dilute solution viscosity parameters of rubber seed oil alkyds |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT) | |
| Name of publisher | Journal of Applied Polymer Science |
| Year of publication | 1998 |
| 300 ## - PHYSICAL DESCRIPTION | |
| Number of Pages | 1987-1992 |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc | Viscosity measurements were carried out in methyl ethyl ketone (MEK) and dimethyl formamide (DMF) for rubber seed oil alkyds having oil content of 20(I), 30(II), 35(III), 40(IV), 50(V), and 60;(VI). Viscosity molecular weights, intrinsic viscosities, and viscosity parameters K and a, characteristic for both polymrsa and solvents, were determined. Generally, solubility properties were found to depend on molecular weight and polarity of the alkyds and solvent. Intrinsic viscosities of the alkyds were larger in DMG than in MEK, suggesting DMF to be a better solvent than MEK for rubber seed oil alkyds. Molecular weights determined for the alkyds range from 441 for sample III to 1323 for sample V. The viscosity molecular weights are in the reasonable agreement with the values determined for samples II-V in MEK and samples I-IV in DMF. The values of Huggins constant for these alkyds were also determined. Data reported also suggest that rubber seed oil alkyds tend to tolerate relatively basic solvent, such as DMF. Fractionation of the alkyds was considered to be in respect of molecular weight and polarity of the alkyds, and results show that low-molecular weight species constitute greater proportion of the alkyds. |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical Term | Alkyds |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical Term | Fractionation |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical Term | Molecular weight |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical Term | Rubber seed oil |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical Term | Solubility parameters |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical Term | Viscosity |
| 700 ## - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Aigbodion A I |
| 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 | 17/12/1998 | Volume 67, Issue 12 | Journals |