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Materials 2010, 3(5), 3188-3203; doi:10.3390/ma3053188
Article

A Green Method for Processing Polymers using Dense Gas Technology

1,* , 2 and 2
Received: 29 March 2010 / Revised: 27 April 2010 / Accepted: 6 May 2010 / Published: 11 May 2010
(This article belongs to the Special Issue Supercritical Fluids)
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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.
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
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Yoganathan, R.B.; Mammucari, R.; Foster, N.R. A Green Method for Processing Polymers using Dense Gas Technology. Materials 2010, 3, 3188-3203.

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