| POLYMERIC NANOPARTICLES FROM SUPERCRITICAL CO2 MICROEMULSION POLYMERIZATION |
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| 作者姓名： | Wei-jun Ye Jason S. Keiper Joseph M. DeSimone |
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| 作者单位： | [1]NSF Science and Technology Center for Environmentally Responsible Solvents and Processes, Department of Chemistry University of North Carolina at Chapel Hill, CB# 3290, Venable Hall, Chapel Hill, NC 27599-3290, USA [2]Department of Chemical Engineering, North Carolina State University, P. O. Box 7905, Raleigh, NC 27695-7905, USA |
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| 基金项目： | This work was financially supported by the STC Program of the US National Science Foundation under Agreement No. CHE-9876674. |
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| 摘 要： | Herein, we reported the microemulsion polymerization in supercritical carbon dioxide. With the aid of an anionic phosphate fluorosurfactant （bis-2-（F-hexyl）ethyl]phosphate sodium）, water-soluble/CO2-insoluble acryloxyethyltrimethyl ammonium chloride monomer and N,N＇-methylene-bisacrylamide cross-linker were solubilized into CO2 continuous phase via the formation of water-in-CO2 （w/c） microemulsion water pools. Initiated by a CO2-soluble initiator, 2,2＇-azo-bisisobutyronitrile （AIBN）, cross-linked poly（acryloxyethyltrimethyl ammonium chloride） particles were produced and stabilized in these w/c internal water pools. Nano-sized particles with sizes less than 20 nm in diameter and narrow particle size distributions were obtained.
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| 关 键 词： | 超临界二氧化碳 纳米颗粒 微乳液聚合 交叉聚合 稳定性 |
| 收稿时间： | 2005-03-03 |
| 修稿时间： | 2005-04-08 |
Polymeric Nanoparticles from Supercritical CO2 Microemulsion Polymerization |
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| Wei-jun Ye Jason S. Keiper Joseph M. DeSimone.POLYMERIC NANOPARTICLES FROM SUPERCRITICAL CO2 MICROEMULSION POLYMERIZATION[J].Chinese Journal of Polymer Science,2006,0(1):95-101. |
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| Authors: | Wei-jun Ye Jason S Keiper Joseph M DeSimone |
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| Institution: | NSF Science and Technology Center for Environmentally Responsible Solvents and Processes, Department of Chemistry, University of North Carolina at Chapel Hill, CB# 3290, Venable Hall, Chapel Hill, NC 27599-3290, USA |
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| Abstract: | Herein, we reported the microemulsion polymerization in supercritical carbon dioxide. With the aid of an anionic phosphate fluorosurfactant (bis-2-(F-hexyl)ethyl]phosphate sodium), water-soluble/CO2-insoluble acryloxyethyltrimethyl ammonium chloride monomer and N,N'-methylene-bisacrylamide cross-linker were solubilized into CO2 continuous phase via the formation of water-in-CO2 (w/c) microemulsion water pools. Initiated by a CO2-soluble initiator, 2,2'-azo-bisisobutyronitrile (AIBN), cross-linked poly(acryloxyethyltrimethyl ammonium chloride) particles were produced and stabilized in these w/c internal water pools. Nano-sized particles with sizes less than 20 nm in diameter and narrow particle size distributions were obtained. |
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| Keywords: | Supercritical carbon dioxide Nanoparticles Microemulsion polymerization |
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