Solvent-free synthesis of poly (phenylene ether) (PPE) in supercritical carbon dioxide (scCO2)

Ai Yamasaki, Yuta Sugiyama, Hideto Mikami, Masaru Watanabe, Yoshiyuki Sato, Richard Smith, Hiroshi Inomata

Research output: Chapter in Book/Report/Conference proceedingConference contribution


The synthesis of poly (phenylene ether) (PPE) has been carried out in supercritical carbon dioxide (scCO2) at 40°C and 15 MPa with a one-step polymerization. Maximum yield and weight-average molecular weight (Mw) of the synthesized PPE were ca. 70 % and 1.1 104, respectively. Two-step polymerizations at 55°C, 22 MPa or 70°C, 30 MPa for 8 h after synthesis at 40°C, 15 MPa for 20 h, gave yields and Mw of up to ca. 80 % and 1.9×104, respectively. A small amount of diphenoquinone (DPQ) was found in both one-step (1.4 %) and two-step (ca.1.7 %) polymerizations. The synthesized PPE was found to have similar glass transition temperature (Tg, 200°C) to that of commercial one. In the synthesis, scCO2 seemed to function not only as a reaction solvent but also as a plasticizer for the PPE polymer.

Original languageEnglish
Title of host publication2006 AIChE Annual Meeting
Publication statusPublished - 2006 Dec 1
Event2006 AIChE Annual Meeting - San Francisco, CA, United States
Duration: 2006 Nov 122006 Nov 17


Other2006 AIChE Annual Meeting
Country/TerritoryUnited States
CitySan Francisco, CA

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Chemistry(all)


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