Synthesis and Molecular Weight Characterization of Rubber Seed Oil-Modified Alkyd Resins (Record no. 47363)
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| 000 -LEADER | |
|---|---|
| fixed length control field | 01867nam a2200133Ia 4500 |
| 100 ## - MAIN ENTRY--AUTHOR NAME | |
| Personal name | Aigbodion A I |
| 245 #0 - TITLE STATEMENT | |
| Title | Synthesis and Molecular Weight Characterization of Rubber Seed Oil-Modified Alkyd Resins |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc | Alkyd resins of 40;(I), 50;(II), and 60;(III) oil length (OL) were prepared with rubber seed oil (RSO), phthalic anhydride (PA),and glycerol (GLY), employing the two-stage alcoholysis method. Changes in the physical characteristics of the reaction medium were monitored by determination of the acid value and the number-average molecular weight, M-n, of in-process samples withdrawn at different stages of the reaction. The mode of variation of these properties denoted that the preparation of RSO alkyds is complex. Molecular weight averages and the molecular weight distribution (MWD) of the finished alkyds were determined by GPC, cryoscopy, and end-group analysis. Molecular weight averages and the MWD vary with differences and end-group analysis. Molecular weight averages and the MWD vary with differences in the formulation, with sample II exhibiting the narrowest size distribution. Values of M-n with the corresponding polydispersities in brackets are 3234 (1.91), 1379(1.56), and 3304 (2.56) for samples I,II and III respectively.M-n values obtained by crypscopy are comparable to those obtained by gel permeation chromatography (GPC), while end-group analysis seems to grossly overestimate their moolecular weights. Correlation of M-n ans the MWD with the quality of the finished alkyds shows that the narrower the size distribution the better the quality of the alkyd. Properties such as the rate of drying and resistance of the alkyds are optimum at 50;OL. |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical Term | Molecular weight characterization |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical Term | Rubber seed oil alkyds |
| 700 ## - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Pillai C K S |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | Bibliography RLSE |
| Withdrawn status | Lost status | Damaged status | Not for loan | Home library | Current library | Date acquired | Koha item type |
|---|---|---|---|---|---|---|---|
| Bibliography | RRII Library | RRII Library | 31/12/2021 | Bibliography RLSE |