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Xanthates as chain-transfer agents in controlled radical polymerization (MADIX): Structural effect of the O-alkyl group
Abstract : The capability of three chain-transfer agents, O-alkyl-S-(1-ethoxycarbonyl)ethyl xanthates (CH3-CHCO2C2H5)S(C=S)OZ', to control the free-radical polymerization of styrene and ethyl acrylate by the MADIX process was examined. The reactivity of the xanthates varied according to the following trend: Z' = CH2CH3 < CH2CF3 < CH[P(O)(OEt)2]CF3. This change in reactivity allowed a lowering of the polydispersity index from 2.0 for Z' = CH2CH3 to 1.15 for Z' = CH[P(O)(OEt)2]CF3 in the case of the polymerization of styrene.
https://hal-polytechnique.archives-ouvertes.fr/hal-00954865
Contributor : Denis Roura <>
Submitted on : Thursday, March 13, 2014 - 9:43:34 PM
Last modification on : Thursday, March 5, 2020 - 6:25:47 PM
Contributor : Denis Roura <>
Submitted on : Thursday, March 13, 2014 - 9:43:34 PM
Last modification on : Thursday, March 5, 2020 - 6:25:47 PM
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