Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5189493 | Polymer | 2006 | 5 Pages |
Abstract
Half-sandwich samarium(III) diketiminate bromide was successfully synthesized and was shown to be active in methyl methacrylate (MMA) polymerization. The effects of temperature, polymerization time and catalyst concentration were studied. Activities of ca. 18 kg of polymethacrylate (PMMA) per mol of samarium per hour were obtained under optimum conditions (0 °C and a MMA/catalyst molar ratio of 100/1), giving a polymer with a molar mass Mn>24,000 g molâ1 and a molar mass distribution (Mw/Mn)<1.4. After 1 h of polymerization, conversions of MMA as high as 96% were observed.
Related Topics
Physical Sciences and Engineering
Chemistry
Organic Chemistry
Authors
Fabio Fabri, Roberto Bineli Muterle, Wanda de Oliveira, Ulf Schuchardt,