New Insights on surfactant-free styrene emulsion polymerization in The presence of sodium styrene sulfonate

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• 作者：Lorena Farias-Cepeda ; Jorge Herrera-Ordonez ; Miriam Estevez…
• 关键词：Emulsion polymerization ; Nucleation ; Colloidal stability ; Styrene ; Sodium styrene sulfonate ; Particle size distribution
• 刊名：Colloid & Polymer Science
• 出版年：2016
• 出版时间：October 2016
• 年：2016
• 卷：294
• 期：10
• 页码：1571-1576
• 全文大小：683 KB
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Polymer Sciences
  Physical Chemistry
  Soft Matter and Complex Fluids
  Characterization and Evaluation Materials
  Food Science
  
• 出版者：Springer Berlin / Heidelberg
• ISSN：1435-1536
• 卷排序：294

文摘

The surfactant-free styrene emulsion polymerization (EP) in the presence of sodium styrene sulfonate (NaSS) was experimentally studied. It was observed that as the NaSS content is higher the number of particles (N) and the breath of the particle size distributions increases. Although EP’s were performed without added surfactant, the N values obtained in these cases reach values typical of EP’s performed in the presence of micelles. These experimental findings are explained in terms of the role of the oligomers formed in the aqueous phase and the feasibility that in situ micellization and micellar nucleation were occurring in these systems is also discussed. The hypothesis proposed in this work contrasts with the ones reported in the literature.