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Dispersion polymerization in supercritical carbon dioxide using comb-like fluorinated polymer surfactants having different backbone structures |
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| Authors: | Byoung Gak Kim Jungin Shin Jae-Seung Chung Hwayong Kim |
| Affiliation: | a Department of Chemical and Biological Engineering, Seoul National University, 559 Gwanangno, Gwanak-gu, Seoul, 151-744, Republic of Korea b Center for Fuel Cell Research, Korea Institute of Science and Technology, 39-1 Hawolgok-dong, Sungbuk-gu, Seoul, 136-791, Republic of Korea c R&D Institute, Miwon Commercial Co., Ltd., 405-3, Moknae-Dong, Ansan-Si, Kyonggi, 425-100, Republic of Korea |
| Abstract: | Comb-like fluorinated polymers with different backbone structures, poly(heptadecafluorodecyl acrylate) (PA-Rf), poly[oxy[(2-perfluorooctylethylene)thiomethyl]ethylene] (PEO-Rf), and poly[p-[[(perfluorooctylethylene)thio]methyl]styrene] (PS-Rf), were used as surfactants in dispersion polymerization to examine the effect of backbone structure on the formation of polymer particles. Dispersion polymerization of monomers with different polarities using these comb-like fluorinated polymer surfactants in CO2 showed that PEO-Rf containing a polar oxyethylene backbone was an effective surfactant for the dispersion polymerization of a polar monomer, such as N-vinyl-2-pyrrolidone, whereas PA-Rf was effective for less polar monomers, such as methyl methacrylate and N-vinyl caprolactam. |
| Keywords: | Supercritical carbon dioxide Dispersion polymerization Comb-like fluorinated polymer Backbone structure |
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