Polymerisation of methyl methacrylate in supercritical difluoromethane
2004; Royal Society of Chemistry; Volume: 6; Issue: 2 Linguagem: Inglês
10.1039/b310429j
ISSN1463-9270
AutoresAndrew P. Abbott, Nicola E. Durling, Philip W. Dyer, Eric G. Hope, Susanne Lange, Sulafudin Vukusic,
Tópico(s)Ionic liquids properties and applications
ResumoThe use of supercritical difluoromethane (scHFC 32) as a solvent is demonstrated for the polymerisation of methyl methacrylate. It is shown that appreciably higher molecular weight polymer can be obtained using scHFC 32 than scCO2, which is due to the higher solubility of the polymer in the more polar fluid. The solubility of various polymer standards is characterised at two pressures in scHFC 32 and is shown to be appreciable up to a molecular weight of 11 000 g mol−1 whereas in scCO2 the polymer of this mass is shown to be almost totally insoluble.
Referência(s)