Please use this identifier to cite or link to this item:
https://hdl.handle.net/1959.11/4605
Title: | Radical entry mechanisms in redox-initiated emulsion polymerizations | Contributor(s): | Lamb, David J (author); Fellows, Christopher (author) ; Gilbert, Robert G (author) | Publication Date: | 2005 | DOI: | 10.1016/j.polymer.2005.06.078 | Handle Link: | https://hdl.handle.net/1959.11/4605 | Abstract: | The mechanisms and kinetics of radical entry in emulsion polymerizations utilizing redox initiation are investigated using polymerization rate data obtained by reaction calorimetry and electrospray mass spectroscopy analysis of initiator-derived aqueous-phase products. These data have been used to evaluate an initiation scheme for redox-initiated emuslion polymerizations of common monomers such as styrene and methyl methacrylate based around the oxidant, 'tert'-butyl hydroperoxide. Redox initiators are broadly classed by the solubility of their radical products: Hydrophilic radicals enter by propagating to a critical degree of polymerization to become surface-active whilst more hydrophobic radicals may enter particles directly. When direct entry is applicable (the hydrophobic case), initiation efficiency will always be very high. | Publication Type: | Journal Article | Source of Publication: | Polymer, 46(19), p. 469-481 | Publisher: | Elsevier Ltd | Place of Publication: | Netherlands | ISSN: | 1873-2291 0032-3861 |
Fields of Research (FoR) 2008: | 030304 Physical Chemistry of Materials 030301 Chemical Characterisation of Materials 030602 Chemical Thermodynamics and Energetics |
Socio-Economic Objective (SEO) 2008: | 860608 Rubber and Synthetic Resins | Peer Reviewed: | Yes | HERDC Category Description: | C1 Refereed Article in a Scholarly Journal |
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Appears in Collections: | Journal Article School of Science and Technology |
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