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Mechanical Evaluation of Nhap Scaffold Coated With Poly-3-Hydroxybutyrate for Bone Tissue Engineering Publisher



Foroughi MR1 ; Karbasi S2 ; Ebrahimikahrizsangi R1
Authors
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Authors Affiliations
  1. 1. Department of Materials Engineering, Najafabad Branch, Islamic Azad University, Isfahan, 517, Iran
  2. 2. Medical Physics and Biomedical Engineering Group, School of Medicine, Isfahan University of Medical Sciences, Isfahan, 81744176, Iran

Source: Journal of Nanoscience and Nanotechnology Published:2013


Abstract

Regeneration of bone, cartilage and osteochondral tissues by tissue engineering has attracted intense attention due to its potential advantages over the traditional replacement of tissues with synthetic implants. Nevertheless, there is still a dearth of ideal or suitable scaffolds based on porous biomaterials, and the present study was undertaken to develop and evaluate a useful porous composite scaffold system. In this study, nano hydroxyapatite (nHAp) powder made (about 35-45 nm) by heating at temperature of 900 °C and porous hydroxyapatite (40, 50 and 60 wt% solution) for making scaffold, by using Polyurethane sponge replication method. In order to increase the scaffolds mechanical properties, they coated with 2, 4 and 6 wt% Poly-3-hydroxybutyrate (P3HB) for 30 sec and 60 sec, respectively; after the scaffold coated by Polymer and survey results, this scaffold is nHAp/P3HB composite. Based on these results, this scaffold is an optimized one among three tested above mentioned composition and can be utilized in bone tissue engineering. In the result, the best of scaffold is with 50 wt% HAp and 6 wt% P3HB and porosity of present is between 80-90% with compressive strength and modulus 1.51 MPa and 22.73 MPa, respectively, that it can be application in bone tissue engineering. Copyright © 2013 American Scientific Publishers All rights reserved.
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