Functional polymers for colloidal applications. V. Novel behavior of polymeric emulsifiers in emulsion polymerization

Ping‐Lin ‐L Kuo, Chaur‐Jinn ‐J Chen

研究成果: Article同行評審

34 引文 斯高帕斯(Scopus)

摘要

The polymeric emulsifier poly(dodecyl acrylate‐co‐acrylic acid) [i.e., the sodium salt (PDA)] and monomeric emulsifier sodium dodecyl glutarate (SDG) have been synthesized. PDA and SDG are used as emulsifiers in the emulsion polymerization of styrene with both the water‐soluble initiator potassium persulfate (K2S2O8) and the oil‐soluble initiator 2,2′‐azobisisobutyronitrile (AIBN). The PDA/K2S2O8 system showed a bimodel distribution of particle sizes (2 and 0.05 μm). A bimodel particle distribution was also found for the PDA/AIBN system, but the distribution for the large particles was wide (0.1–10 and 0.07 μm). The SDG/K2S2O8 system displayed only one kind of particle size (0.05 μm), but the SDG/AIBN system also showed a bimodel distribution of particle sizes (0.05 and 5 μm). These bimodel distribution results for the PDA/K2S2O8, PDA/AIBN, and SDG/AIBN systems indicate that the polymerization sites are both in oil droplets and in micelles (polymer aggregates). This mechanism is interpreted in terms of the formation of polymer aggregates, which is supported by the results of pyrene solubilization, pyrene fluorescence, surface tension, and pyrene excimer experiments. © 1993 John Wiley & Sons, Inc.

原文English
頁(從 - 到)99-111
頁數13
期刊Journal of Polymer Science Part A: Polymer Chemistry
31
發行號1
DOIs
出版狀態Published - 1993 1月

All Science Journal Classification (ASJC) codes

  • 聚合物和塑料
  • 有機化學
  • 材料化學

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