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Comparison of the effect of reactive and non-reactive steric stabilisers on the mechanism of film formation in methyl methacrylate/butyl ACrylate copolymers latexes. part 2. electrical conduction and dielectric spectroscopic investigations

Pethrick, R.A. and Cannon, L.A. (2002) Comparison of the effect of reactive and non-reactive steric stabilisers on the mechanism of film formation in methyl methacrylate/butyl ACrylate copolymers latexes. part 2. electrical conduction and dielectric spectroscopic investigations. Polymer, 43 (24). pp. 6429-6438. ISSN 0032-3861

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Abstract

A comparison of the film forming ability of methyl methacrylate (MMA)/butyl acrylate (BA) latex copolymers stabilised by either a reactive or a non-reactive steric stabiliser is reported and indicates the key role of the degree of polymerisation of the hydrophilic ethylene oxide chain on the coalescence process. The study uses dielectric measurements to follow and identify the various stages of film formation. The ability of the stabiliser to segregate and diffuse from the interfacial layer into the surrounding media influences in both the rate of the coalescence process and the final physical properties of the films formed. Dielectric relaxation and electrical conductivity measurements indicate the mechanistic complexity of the coalescence process and illustrate that the clear differences exist between the behaviour of the two systems investigated. A model for the film formation processes is presented which incorporates the various features identified by the dielectric study.

Item type: Article
ID code: 38694
Keywords: steric stabilisers , methyl methacrylate , copolymers latexes , dielectric spectroscopy, Chemistry, Organic Chemistry, Polymers and Plastics
Subjects: Science > Chemistry
Department: Faculty of Science > Pure and Applied Chemistry
Related URLs:
    Depositing user: Pure Administrator
    Date Deposited: 26 Mar 2012 15:00
    Last modified: 04 Sep 2014 19:11
    URI: http://strathprints.strath.ac.uk/id/eprint/38694

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