Radical polymerizations of a silicone-containing acrylic monomer in supercritical carbon dioxide

✍ Scribed by Hiroshi Shiho; Joseph M. Desimone

• Publisher: John Wiley and Sons
• Year: 2000
• Tongue: English
• Weight: 144 KB
• Volume: 38
• Category: Article
• ISSN: 0887-624X
• DOI: 10.1002/1099-0518(20000901)38:17<3100::aid-pola110>3.0.co;2-#

✦ Synopsis

Radical homopolymerizations and copolymerizations of 3-[tris(trimethylsilyloxy)silyl]propyl methacrylate (SiMA) in supercritical CO 2 were investigated. The homopolymer was obtained in CO 2 with a good yield. It was essentially insoluble in pure CO 2 at less than 500 bar at 65 °C but was soluble in a mixture of CO 2 and its monomer (10 w/v %) at 352 bar. The copolymerizations of SiMA with methyl methacrylate, 1,1-dihydroperfluorooctyl methacrylate, and styrene with various monomer feed ratios were also examined in supercritical CO 2 and in bulk, and the reactivity ratios were determined.