caa a22 4500 465788262 CHVBK 20180323112015.0 cr unu---uuuuu 170327e19900401xx s 000 0 eng 10.1007/BF00294865 doi (NATIONALLICENCE)springer-10.1007/BF00294865 Preparation of a water soluble polyester surfactant and its use in the emulsion polymerization of styrene [Elektronische Daten] [T. McCartney, I. Piirma] Summary: The synthesis procedure of Chen and Liu (1) was used to prepare a polyester surfactant from dimethyl 5-sulfoisophthalate, sodium salt, polyoxyethylene (MW 200) and phthalic anhydride by a two step esterification process. The surfactant has the unique structural features of multiple ionic groups and polyoxyethylene chains for hydrophilicity and aromatic ester linkages for hydrophobicity. The polyester surfactant exhibited a CMC of 0.25% (w/v) and a surface tension lowering of 23 dynes/cm. The use of the surfactant as stabilizer for the emulsion polymerization of styrene produced some unusual results. While the rate of polymerization was independent of surfactant concentration, the number of particles increased as N ∝ [S]0.91. The molecular weight of polystyrene produced was low and found not to be a function of surfactant concentration. The structural features of the surfactant suggest that a depletion stabilization mechanism might be operative in this system. Springer-Verlag, 1990 McCartney T. Department of Polymer Science, University of Akron, 44325-3909, Akron, OH, USA aut Piirma I. Department of Polymer Science, University of Akron, 44325-3909, Akron, OH, USA aut Polymer Bulletin Springer-Verlag 23/4(1990-04-01), 367-371 0170-0839 23:4<367 1990 23 289 https://doi.org/10.1007/BF00294865 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00294865 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- McCartney T. Department of Polymer Science, University of Akron, 44325-3909, Akron, OH, USA aut NATIONALLICENCE 700 1- Piirma I. Department of Polymer Science, University of Akron, 44325-3909, Akron, OH, USA aut NATIONALLICENCE 773 0- Polymer Bulletin Springer-Verlag 23/4(1990-04-01), 367-371 0170-0839 23:4<367 1990 23 289 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer