RAFT polymerisation in water-borne organic dispersions

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dc.contributor.authorTonge M.P.
dc.contributor.authorMcLeary J.B.
dc.contributor.authorVosloo J.J.
dc.contributor.authorSanderson R.D.
dc.date.accessioned2011-05-15T15:57:12Z
dc.date.available2011-05-15T15:57:12Z
dc.date.issued2003
dc.description.abstractTwo different approaches to achieving controlled reversible addition-fragmentation chain transfer polymerisation in water-borne dispersions have been attempted, both giving reasonable control over molar mass evolution. Molar mass increased linearly with conversion, and the colloidal instability that has sometimes been observed in similar systems (e.g. [de Brouwer, H.; Monteiro, M. J.; Tsavalas, J. G.; Schork, F. J. Macromolecules 2000, 33, 9239]) was avoided. The similarity of results for the two quite different approaches can largely be reconciled utilising the theory of Luo et al. [Luo, Y.; Tsavalas, J.; Schork, F. J. Macromolecules 2001, 34, 5501] The average number of radicals per particle, in terms of both propagating and RAFT intermediate radicals were compared, using two current models in the literature for the ratio of propagating to intermediate species. [Barner-Kowollik, C.; Quinn, J. F.; Morsley, D. R.; Davis, T. P. J. Polym. Sci. Part A: Polym. Chem. 2001, 39, 1353; Monteiro, M. J.; de Brouwer, H. Macromolecules 2001, 34, 349; Kwak, Y.; Goto, A.; Tsujii, Y.; Murata, Y.; Komatsu, K.; Fukuda, T. Macromolecules 2002, 35, 3026] Possible implications for water-borne dispersions under such conditions are that the maximum value of the average number of propagating radicals per particle may be significantly lower than 0.5, depending on the dominant mechanism for radical loss.
dc.description.versionConference Paper
dc.identifier.citationMacromolecular Symposia
dc.identifier.citation193
dc.identifier.issn10221360
dc.identifier.other10.1002/masy.200390060
dc.identifier.urihttp://hdl.handle.net/10019.1/10270
dc.subjectDispersions
dc.subjectMacromolecules
dc.subjectWater
dc.subjectMolar mass
dc.subjectPolymerization
dc.subjectfree radical
dc.subjectlatex
dc.subjectoligomer
dc.subjectpolymer
dc.subjectpolystyrene
dc.subjectstyrene
dc.subjectsurfactant
dc.subjectwater
dc.subjectchemical reaction
dc.subjectcolloid
dc.subjectconference paper
dc.subjectcontrolled study
dc.subjectemulsion
dc.subjectkinetics
dc.subjectmodel
dc.subjectparticle size
dc.subjectpolymerization
dc.subjectreversible addition fragmentation transfer polymerization
dc.titleRAFT polymerisation in water-borne organic dispersions
dc.typeConference Paper
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