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- Unzué, MJ, et al.
(author)
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Reactive surfactants in heterophase polymerization. VI. Synthesis and screening of polymerizable surfactants (surfmers) with varying reactivity in high solids styrene-butyl acrylate-acrylic acid emulsion polymerization
- 1997
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In: Journal of Applied Polymer Science. - 0021-8995 .- 1097-4628. ; 66, s. 1803-1820
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Journal article (peer-reviewed)abstract
- Several polymerizable surfactants (surfmers) have been used in the semi-continuous emulsion polymerization of styrene, butyl acrylate and acrylic acid. Three of the (anionic) surfmers (sodium 11-crotonyl undecan-1-yl-sulfate, sodium 11-methacryloyl undecan-1-sulfate and sodium sulfopropyl tetradecyl maleate) were in house with purities between 53 and 82%. Physico-chemical properties such as the critical micelle concentration, the adsorption isotherm, and the specific adsorption area were determined. The surfmers were then used with constant addition profiles in semi-continuous reactions, and the instantaneous conversions of the main monomers determined. The particle size, amount of coagulum, surface tension and stability against electrolyte solutions of the latices were evaluated. Film were cast of some of the latices, and the visual appearance and water adsorption were assessed.
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