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International Journal of Polymer Science
Volume 2015, Article ID 132965, 9 pages
http://dx.doi.org/10.1155/2015/132965
Research Article

Microstructure, Mechanical, and Biological Properties of Porous Poly(vinylidene fluoride) Scaffolds Fabricated by Selective Laser Sintering

1Hunan Provincial Tumor Hospital and the Affiliated Tumor Hospital of Xiangya School of Medicine, Central South University, Changsha 410013, China
2State Key Laboratory of High Performance Complex Manufacturing, Central South University, Changsha 410083, China
3State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China
4Orthopedic Biomedical Materials Institute, Central South University, Changsha 410083, China
5Department of Orthopedics, The Second Xiangya Hospital, Central South University, Changsha 410011, China
6School of Basic Medical Science, Central South University, Changsha 410078, China

Received 26 January 2015; Revised 23 April 2015; Accepted 27 April 2015

Academic Editor: Piotr Wilczek

Copyright © 2015 Wei Huang et al. 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.

Abstract

Porous poly(vinylidene fluoride) (PVDF) scaffolds were prepared by selective laser sintering. The effects of laser energy density, ranging from 0.66 to 2.16 J/mm2, on microstructure and mechanical properties were investigated. At low energy density levels, PVDF particles could fuse well and the structure becomes dense with the increase of the energy density. Smoke and defects (such as holes) were observed when the energy density increased above 1.56 J/mm2 which indicated decomposition of the PVDF powder. The scaffolds appeared to be light yellow and there was a reduction in tensile strength. The fabricated scaffolds were immersed into simulated body fluid for different time to evaluate biostability. In addition, MG63 cells were seeded and cultured for different days on the scaffolds. The testing results showed that the cells grew and spread well, indicating that PVDF scaffolds had good biocompatibility.