Journal
MATERIALS LETTERS
Volume 176, Issue -, Pages 25-28Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2016.04.078
Keywords
Biomimetic; Microstructure; Tissue engineering scaffold; Gradient structure
Funding
- Natural Science Foundation of Hebei Province [E2013201230]
- Research Fund for the Doctoral Program of Higher Education of China [20131301120006]
- Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry
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To mimic the gradients across a spatial volume of native tissue, poly(L-lactic acid) (PLLA) scaffolds with physical gradient at the macroscale were designed and precisely fabricated for tissue engineering via a thermally induced phase separation (TIPS) method combining a modified sugar sphere template leaching technique. The gradient structure was investigated by scanning electron microscopy (SEM). The resulting scaffolds have a gradient macropore size (from 300 mu m to 600 mu m), porosity, as well as interconnectivity. The internal architectures can be well controlled by the gradient sugar sphere templates. The gradient scales in the scaffold may meet different requirements for different cells in multiple tissues. (C) 2016 Elsevier B.V. All rights reserved.
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