Non-Fluorous Random Copolymeric Stabilizers for Dispersion Polymerizations of MMA in Supercritical CO2

✍ Scribed by Ha Soo Hwang; Kwon Taek Lim

• Publisher: John Wiley and Sons
• Year: 2006
• Tongue: English
• Weight: 182 KB
• Volume: 27
• Category: Article
• ISSN: 1022-1336
• DOI: 10.1002/marc.200600071

✦ Synopsis

Abstract

Summary: The dispersion polymerization of MMA in supercritical CO~2~ was successfully carried out utilizing the first non‐fluorous random copolymers composed of 3‐tris(trimethoxysilyl)propyl methacrylate and 2‐dimethylaminoethyl methacrylate, poly(SiMA‐co‐DMAEMA) as a stabilizer. The resulting high yield (>93%) of micron‐sized PMMA was formed in the presence of 5% (w/w to MMA) of copolymeric stabilizers. While the PSiMA and PDMAEMA homopolymer produced nondescript solid and irregular shape aggregate, respectively, the random copolymer of 71% SiMA‐content resulted in spherical and uniform powder.

SEM image of PMMA particles prepared in supercritical CO~2~ using poly(SiMA‐co‐DMAEMA) (71:29) stabilizer.

magnified imageSEM image of PMMA particles prepared in supercritical CO~2~ using poly(SiMA‐co‐DMAEMA) (71:29) stabilizer.