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A Green Method for Processing Polymers using Dense Gas Technology


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1

Department of Pharmaceutical Sciences, Leslie Dan Faculty of Pharmacy, University of Toronto, 144 College Street, Toronto, Ontario M5S 3M2, Canada

2

School of Chemical Engineering, Chemical Sciences Building, University of New South Wales, Sydney NSW 2052, Australia





*

Author to whom correspondence should be addressed.



Abstract Dense CO2 can be used as an environmentally-benign polymer processing medium because of its liquid-like densities and gas-like mass transfer properties.In this work, polymer bio-blends of polycarbonate PC, a biocompatible polymer, and polycaprolactone PCL, a biodegradable polymer were prepared. Dense CO2 was used as a reaction medium for the melt-phase PC polymerization in the presence of dense CO2-swollen PCL particles and this method was used to prepare porous PC-PCL blends. To extend the applicability of dense CO2 to the biomedical industry and polymer blend processing, the impregnation of ibuprofen into the blend was conducted and subsequent dissolution characteristics were observed. View Full-Text

Keywords: dense gas technology; polymer processing; green technology; biomedical polymers; drug delivery system; polymer blends; polymerization; polycarbonate; polycaprolactone; ibuprofen dense gas technology; polymer processing; green technology; biomedical polymers; drug delivery system; polymer blends; polymerization; polycarbonate; polycaprolactone; ibuprofen





Autor: Roshan B. Yoganathan 1,* , Raffaella Mammucari 2 and Neil R. Foster 2

Fuente: http://mdpi.com/



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