Adhesion of latex films. IV. Dominating interfacial effect of the surfactant

Gerin, Patrick;Grohens, Yves;Schirrer, Rober;Holl, Yves
(1999) Journal of Adhesion Science and Technology : the international journal of theoretical and basic aspects of adhesion science and its applications in all areas of technology — Vol. 13, n° 2, p. 217-236 (1999)

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  • Gerin, Patrickorcid-logoUCLouvain
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  • Grohens, YvesUniversité de Bretagne Sud
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  • Schirrer, RoberInstitut Charles Sadron, Strasbourg
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  • Holl, YvesInstitut Charles Sadron, Strasbourg
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Abstract
Our aim was to study the effect of various surfactants on the adhesion properties of latex films. For this purpose, a model monodisperse, surfactant-free, core-shell latex was synthesized. The core was a random copolymer of styrene and butyl acrylate. The shell consisted of a styrene/butyl acrylate/methacrylic acid terpolymer with 10 wt% of methacrylic acid. Sodium dodecyl sulfate (SDS) and various ethoxylated nonionic surfactants were post-added to the latex at increasing concentrations. The adhesion of the corresponding films was measured by peeling at 180°. The shapes of the curves relating the peel energy to the surfactant concentration were similar, irrespective of the nature of the surfactant, namely a decrease to a constant plateau level. This means that in these systems, the influence of a weak boundary layer at the interface dominates all other possible effects of the surfactant. This was confirmed by surface analysis and peel experiments with surfactant-free films contacted with spin-coated SDS layers of increasing thickness. The reasons why the deleterious interfacial effect of the surfactant overwhelms all others are discussed.
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Gerin, P., Grohens, Y., Schirrer, R., & Holl, Y. (1999). Adhesion of latex films. IV. Dominating interfacial effect of the surfactant. Journal of Adhesion Science and Technology : the international journal of theoretical and basic aspects of adhesion science and its applications in all areas of technology, 13(2), 217-236. https://doi.org/10.1163/156856199X00406 (Original work published 1999)