Preparation of CO2‐switchable latexes using N‐[3‐(dimethylamino)propyl]‐methacrylamide (DMAPMAm) |
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| Authors: | Ali Darabi Joe Glasing Philip G Jessop Michael F Cunningham |
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| Affiliation: | 1. Department of Chemical Engineering, Queen's University, Kingston, Ontario, Canada;2. Department of Chemistry, Queen's University, Kingston, Ontario, Canada |
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| Abstract: | CO2‐switchable polystyrene (PS), poly(methyl methacrylate) (PMMA), and poly(butyl methacrylate) (PBMA) latexes were prepared via surfactant‐free emulsion polymerization (SFEP) under a CO2 atmosphere, employing N‐3‐(dimethylamino)propyl]methacrylamide (DMAPMAm) as a CO2‐switchable, water‐soluble, and hydrolytically stable comonomer. The conversion of the SFEP of styrene reaches >95% in less than 5 h. The resulting latexes have near monodisperse particles (PDI ≤ 0.05), as confirmed by DLS and TEM. The latexes could be destabilized by bubbling nitrogen (N2) and heating at 65 °C for 30 min, and easily redispersed by only bubbling CO2 for a short time without using sonication. © 2017 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2017 , 55, 1059–1066 |
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| Keywords: | carbon dioxide CO2‐switchable latexes radical polymerization stimuli‐responsive polymers surfactant‐free emulsion polymerization (SFEP) |
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