Abstract
Inverse microemulsion copolymerization of acrylamide (Am), acrylic acid (AA), and sodium 4-styrenesulfonate (SSS) initiated by redox initiators composed of ammonium peroxodisulphate (APS) and sodium bisulfite, and stabilized by the mixed emulsifier system sorbitan monooleate (Span-80) and polyoxyethylene sorbitan monooleate (Tween 80) were examined as a function of the combination of hydrophilic (Tween 80) and hydrophobic (Span 80) emulsifiers, reaction temperature, AM/AA mass ratio, SSS concentration, and initiator concentration. The physicochemical and thermal properties and the structure of this copolymer were also determined and discussed. The reaction rates for all runs of the experiments exhibited two intervals, which were typical of microemulsion polymerization. The copolymer had only one glass transition temperature of 115.5 °C, indicating a random structure.
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The authors gratefully acknowledge the financial support of China Postdoctoral Science Foundation (No. 20070421140).
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Wan, T., Zang, T., Wang, Y. et al. Preparation of water soluble Am–AA–SSS copolymers by inverse microemulsion polymerization. Polym. Bull. 65, 565–576 (2010). https://doi.org/10.1007/s00289-009-0234-9
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DOI: https://doi.org/10.1007/s00289-009-0234-9