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The Strathprints institutional repository is a digital archive of University of Strathclyde's Open Access research outputs. Strathprints provides access to thousands of Open Access research papers by University of Strathclyde researchers, including by researchers from the Department of Computer & Information Sciences involved in mathematically structured programming, similarity and metric search, computer security, software systems, combinatronics and digital health.

The Department also includes the iSchool Research Group, which performs leading research into socio-technical phenomena and topics such as information retrieval and information seeking behaviour.

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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.