Non-bioaccumulative, environmentally preferable stabilizer architectures for the dispersion polymerization of MMA in supercritical CO2

• Published in: Colloid and polymer science 2008-06, Vol.286 (6-7), p.843-848
• Main Authors: Ganapathy, Hullathy Subban, Kim, Jun Ho, Kim, Won Soo, Woo, Min Hee, Lee, Min Young, Hong, Seung-Soo, Kim, Hyun Gyu, Jeong, Euh Duck, Lim, Kwon Taek
• Format: Article
• Language: English
• Subjects: Applied sciences; Architecture; Carbon dioxide; Characterization and Evaluation of Materials; Chemical industry; Chemistry; Chemistry and Materials Science; Complex Fluids and Microfluidics; Copolymers; Dispersions; Environmental impact statements; Exact sciences and technology; Fluorination; Food Science; Nanotechnology and Microengineering; Organic polymers; Physical Chemistry; Physicochemistry of polymers; Polymer Sciences; Polymerization; Polymers with particular properties; Polymethyl methacrylates; Preparation, kinetics, thermodynamics, mechanism and catalysts; Short Communication; Soft and Granular Matter
• ISSN: 0303-402X; 1435-1536
• DOI: 10.1007/s00396-008-1860-8

To overcome the environmental concerns associated with long-chain perfluorinated compounds, in this report, non-bioaccumulative, environmentally friendly stabilizer architectures based on short-chain fluorinated polymers have been designed for the dispersion polymerization of methyl methacrylate (MMA) in supercritical CO 2 . Random copolymers composed of 2-(diisopropylamino)ethyl methacrylate (DPAEMA) and 2,2,3,3,4,4,4-heptafluorobutyl methacrylate (FBMA) or 2,2,3,3,4,4,5,5-octafluoropentyl methacrylate were prepared with various comonomer ratios and utilized as stabilizers. It was found that the copolymers effectively stabilized PMMA latexes in CO 2 , leading to the formation of free-flowing, spherical PMMA particles. With increase in the concentration of the stabilizer poly(FBMA- co -DPAEMA) from 2% to 6% ( w / w with respected to MMA), the particles diameter decreased from 3.02 to 1.0 μm.