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Int. J. Mol. Sci. 2012, 13(3), 3366-3381;

Preparation and Characterization of New Nano-Composite Scaffolds Loaded With Vascular Stents

Institute of Prosthodontics , School of Stomatology, Tongji University, 399 Yanchang Road, Shanghai 200092, China
Institute of Nano- and Bio-Polymeric Materials, School of Materials Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China
Author to whom correspondence should be addressed.
Received: 1 December 2011 / Revised: 4 January 2012 / Accepted: 20 February 2012 / Published: 12 March 2012
(This article belongs to the Special Issue Composite Materials in Skeletal Engineering)
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In this study, vascular stents were fabricated from poly (lactide-ε-caprolactone)/collagen/nano-hydroxyapatite (PLCL/Col/nHA) by electrospinning, and the surface morphology and breaking strength were observed or measured through scanning electron microscopy and tensile tests. The anti-clotting properties of stents were evaluated for anticoagulation surfaces modified by the electrostatic layer-by-layer self-assembly technique. In addition, nano-composite scaffolds of poly (lactic-co-glycolic acid)/polycapr-olactone/nano-hydroxyapatite (PLGA/PCL/nHA) loaded with the vascular stents were prepared by thermoforming-particle leaching and their basic performance and osteogenesis were tested in vitro and in vivo. The results show that the PLCL/Col/nHA stents and PLGA/PCL/nHA nano-composite scaffolds had good surface structures, mechanical properties, biocompatibility and could guide bone regeneration. These may provide a new way to build vascularized-tissue engineered bone to repair large bone defects in bone tissue engineering. View Full-Text
Keywords: nano-composite scaffold; tissue engineering; mechanical property; electrospinning nano-composite scaffold; tissue engineering; mechanical property; electrospinning
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Xu, H.; Su, J.; Sun, J.; Ren, T. Preparation and Characterization of New Nano-Composite Scaffolds Loaded With Vascular Stents. Int. J. Mol. Sci. 2012, 13, 3366-3381.

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