Relative reactivity of chloroprene and methyl methacrylate toward initiator radicals

Fellows, Christopher M., and Senogles, Ernest (2003) Relative reactivity of chloroprene and methyl methacrylate toward initiator radicals. European Polymer Journal, 39 (7). pp. 1509-1513.

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The relative rates of addition of chloroprene (CP) and methyl methacrylate (MMA) toward small model radicals structurally similar to the poly(MMA), poly(methacrylonitrile) and poly(styrene) radical was investigated following the method of Bevington and Huckerby [J Polym Sci Polym Chem 20 (1982) 2655]. Results indicate that these small radicals are significantly more selective toward CP than the corresponding polymer radicals, consistent with earlier reports that penultimate unit effects may be important in the copolymerisation of CP with MMA and styrene. As previous investigations of substituted dienes by the end-group method have given similar results for polymer radicals and small model radicals, this may constitute evidence for a penultimate unit effect that is predominantly electronic rather than steric in origin.

Item ID: 13746
Item Type: Article (Research - C1)
ISSN: 1873-1945
Keywords: chloroprene; initiator; kinetics; methyl methacrylate; polymer chemistry
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Date Deposited: 26 Nov 2010 06:39
FoR Codes: 03 CHEMICAL SCIENCES > 0303 Macromolecular and Materials Chemistry > 030305 Polymerisation Mechanisms @ 100%
SEO Codes: 97 EXPANDING KNOWLEDGE > 970103 Expanding Knowledge in the Chemical Sciences @ 100%
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