Free radical entry in emulsion polymerizations

Maxwell, Ian A., Morrison, Bradley R., Gilbert, Robert G., Sangster, David F. and Napper, Donald H. (1992). Free radical entry in emulsion polymerizations. In: International Symposium on Polymer Materials - Preparation, Characterization and Properties. International Symposium on Polymer Materials - Preparation, Characterization And Properties ( Polymer 91 ), Melbourne, VIC, Australia, (233-242). 10-15 February 1991. doi:10.1002/masy.19920530122


Author Maxwell, Ian A.
Morrison, Bradley R.
Gilbert, Robert G.
Sangster, David F.
Napper, Donald H.
Title of paper Free radical entry in emulsion polymerizations
Conference name International Symposium on Polymer Materials - Preparation, Characterization And Properties ( Polymer 91 )
Conference location Melbourne, VIC, Australia
Conference dates 10-15 February 1991
Proceedings title International Symposium on Polymer Materials - Preparation, Characterization and Properties   Check publisher's open access policy
Journal name Makromolekulare Chemie-Macromolecular Symposia   Check publisher's open access policy
Place of Publication Weinheim, Germany
Publisher Wiley - V C H Verlag GmbH
Publication Year 1992
Sub-type Fully published paper
DOI 10.1002/masy.19920530122
ISSN 0258-0322
Volume 53
Issue 1
Start page 233
End page 242
Total pages 9
Language eng
Abstract/Summary Measurements of the rate coefficients characterising the entry of free radicals into seed particles in styrene emulsion polymerizations has allowed the rate determining step for entry to be identified. This was found to be the rate of production of oligomeric species in the aqueous phase by monomer addition to the primary free radicals. Once formed the subsequent diffusion of these species to the latex particles (and their incorporation within these particles) is relatively fast, contrary to the assumptions of the previous diffusion controlled theories. The experimental results imply that the entering free radicals contain only two or three monomer units. Thermodynamic considerations show that such species should be both water soluble and surface active. Similar conclusions have been reached for other sparingly water soluble monomers, such as butyl acrylate and butyl methacrylate.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ
Additional Notes Article first published online: 2 March 2011.

Document type: Conference Paper
Collection: Centre for Nutrition and Food Sciences Publications
 
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Created: Mon, 07 Mar 2011, 15:52:16 EST