Emulsion Polymerization of an Epoxy-Acrylate Emulsion Stabilized with Polyacrylate. I. Influence of Salt, Initiator, Neutralizing Amine, and Stirring Speed

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dc.contributor.authorDe Wet-Roos D.
dc.contributor.authorKnoetze J.H.
dc.contributor.authorCooray B.
dc.contributor.authorSanderson R.D.
dc.date.accessioned2011-05-15T15:59:28Z
dc.date.available2011-05-15T15:59:28Z
dc.date.issued1999
dc.description.abstractThe past decade has seen the development of high-performance epoxyacrylate coatings. Some of these coatings are used exclusively as can coatings. To improve chemical resistance, emulsion polymerization in the presence of the dispersed epoxy resin can be conducted. Replicated factorial designs were designed to investigate some of the factors that contribute to the performance and stability of the epoxyacrylate coating. The factors investigated in this study were: the type and amount of neutralizing amine, the type of initiator, the presence or absence of salt, and the stirring speed of the impeller. The measured responses for the experimental design were particle size, particle size distribution, and conversion. It has been shown in this study that the type of amine used to neutralize the polyacrylic stabilizer significantly influenced the observed responses probably by acting as chain transfer agent during polymerization. The addition of salt significantly affected the observed responses by shielding the surface charges on the particle surface that impart stability to the latex through electrostatic repulsion. Stirring speed of the impeller and the type of initiator as factors in the range investigated do not influence the kinetics or the particle size and polydispersity to any great extent either on their own or in combination with other factors. ©1999 John Wiley & Sons, Inc.
dc.description.versionArticle
dc.identifier.citationJournal of Applied Polymer Science
dc.identifier.citation71
dc.identifier.citation8
dc.identifier.issn218995
dc.identifier.urihttp://hdl.handle.net/10019.1/11191
dc.subjectAmines
dc.subjectComposition effects
dc.subjectElectrostatics
dc.subjectEmulsion polymerization
dc.subjectEpoxy resins
dc.subjectInitiators (chemical)
dc.subjectParticle size analysis
dc.subjectPolyacrylates
dc.subjectSalts
dc.subjectStabilizers (agents)
dc.subjectPolydispersity
dc.subjectPlastic coatings
dc.titleEmulsion Polymerization of an Epoxy-Acrylate Emulsion Stabilized with Polyacrylate. I. Influence of Salt, Initiator, Neutralizing Amine, and Stirring Speed
dc.typeArticle
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