FURTHER STUDY OF ALLYL ETHERS AND RELATED COMPOUNDS AS TRANSFER AGENTS IN RADICAL POLYMERIZATIONS.

Bevington, J. C. and Huckerby, T. N. and Hunt, B. J. and Jenkins, A. D. (2001) FURTHER STUDY OF ALLYL ETHERS AND RELATED COMPOUNDS AS TRANSFER AGENTS IN RADICAL POLYMERIZATIONS. Journal of Macromolecular Science Part A Pure and Applied Chemistry, 38 (10). pp. 981-990. ISSN 1060-1325

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Abstract

Allyl glycidyl ether (AGE), allyl 1,1,2,3,3,3-hexafluoropropyl ether (AFE), allyl 2-naphthyl ether (ANE), 2-vinyl-1,3-dioxolane (2VD) and allyl alcohol (AA) have been examined as transfer agents in the radical polymerization of methyl methacrylate (MMA) at 60°C; the transfer constants are 1.1 10-3, 0.1 10-3, 0.2 10-3, 1.1 10-3 and 0.6 10-3, respectively. AFE and AA barely affect the rate of polymerization: AGE, ANE, and 2VD act as weak retarders. There is no direct correlation between effectiveness as a transfer agent and the extent of retardation for these additives. For copolymerization with MMA (monomer-1), the monomer reactivity ratios r1 are 42 ± 5 and 32 ± 5 for AGE and ANE, respectively; for both cases, r2 is very close to zero; 2VD engages in copolymerization with MMA to a negligible extent. Experiments involving styrene or acrylonitrile gave results consistent with those obtained using MMA.

Item Type:
Journal Article
Journal or Publication Title:
Journal of Macromolecular Science Part A Pure and Applied Chemistry
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/2500/2505
Subjects:
?? radical polymerizationtransferretardationallyl ethersmaterials chemistrypolymers and plasticsceramics and compositesgeneral chemistrychemistry(all)qh301 biology ??
ID Code:
10777
Deposited By:
Deposited On:
24 Jul 2008 08:55
Refereed?:
Yes
Published?:
Published
Last Modified:
16 Jul 2024 08:08