ISSN:
0887-624X
Keywords:
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
The radical copolymerization of allyl esters with vinyl acetate has been studied in the range from 10 to 90 mol % allyl esters in the feed. The Kelen-Tüdos method was employed to determine the monomer reactivity ratios. The following values were found for the reactivity ratios: allyl propionate (M1)-vinyl acetate (M2), r1 = 0.42, r2 = 1.29; allyl butyrate (M1)-vinyl acetate (M2), r1 = 0.64, r2 = 0.97; allyl isobutyrate (M1)-vinyl acetate (M2), r1 = 0.51, r2 = 1.04; allyl valerate (M1)-vinyl acetate (M2), r1 = 0.58, r2 = 1.07; allyl trimethylacetate (M1)-vinyl acetate (M2), r1 = 0.34, r2 = 1.15. The Q-e parameters were calculated from the allyl esters (M1)-vinyl acetate (M2) reactivity ratios. The e parameters of allyl ester monomers have been found to be nicely correlated with parameters such as dissociation constants of carboxylic acids, which are constituents of allyl ester monomers, and Taft σ* constants of the alkyl group in the acids. The molecular weights of copolymers were measured by GPC and ranged from (1.0-15.0) × 104.
Additional Material:
4 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/pola.1990.080281211
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