4.6 Article

Synthesis of Cross-Linked, Partially Neutralized Poly(Acrylic Acid) by Suspension Polymerization in Supercritical Carbon Dioxide

Journal

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
Volume 51, Issue 35, Pages 11401-11408

Publisher

AMER CHEMICAL SOC
DOI: 10.1021/ie3014007

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Funding

  1. National Science Foundation [CHE-9876674]
  2. Enovik, Inc.

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A novel process for producing superabsorbent polymer of cross-linked, partially neutralized poly(acrylic acid) via suspension polymerization in supercritical carbon dioxide was developed. The process utilized siloxane-based surfactants as suspension stabilizers to produce particles with acceptable size range for commercial applications. The behavior of the suspension mixture and its relation to the final product morphology is discussed. The product performance in terms of water absorbency is presented.

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