Journal
JOURNAL OF POROUS MATERIALS
Volume 15, Issue 4, Pages 397-403Publisher
SPRINGER
DOI: 10.1007/s10934-006-9094-y
Keywords
supercritical CO(2); foaming agent; microtomography; image analysis; 3D images; 3D reconstruction
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Poly(epsilon-caprolactone) foams were prepared, via a batch process, by using supercritical CO(2) as foaming agent. Their porous structure was characterized through mercury porosimetry, helium and mercury pycnometry, scanning electron microscopy (SEM) and X-ray microtomography observations coupled with image analysis. The pore size distributions obtained by these two latter techniques show that the pore structure is more homogeneous when the foaming process is performed under a high CO(2) saturation pressure (higher than 250 bars).
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