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. 2009 Jul 23;15(12):3765–3778. doi: 10.1089/ten.tea.2009.0078

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Copyright 2009, Mary Ann Liebert, Inc.

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FIG. 1. — Scanning electron photomicrographs of representative copolymer scaffolds, air dried and carbon coated for imaging. Poly(L-lactide-ɛ-caprolactone) [P(LA-CL)] (left panel; 75:25 ratio of PLLA:PCL) is composed of thin layers of material that form small fenestrations or pores ∼50–100 μm in diameter throughout the scaffold. Hydroxyapatite (HA) added to P(LA-CL) in a wt % ratio of 70:30 is incorporated into the scaffolds as small spherules of diameter ∼30 μm (arrows; middle panel). β-tricalcium phosphate (β-TCP) mixed with P(LA-CL) in a wt % ratio of 70:30 appears as fine particulates of diameter ∼3 μm that decorate the P(LA-CL) layers rather uniformly (arrows; right panel). Magnification = 230 ×. Color images available online at www.liebertonline.com/ten.