Preparation and characterization of nano-hydroxyapatite/polymer composite scaffolds

J Mater Sci Mater Med. 2008 Nov;19(11):3429-35. doi: 10.1007/s10856-008-3499-x. Epub 2008 Jun 24.

Abstract

Polycaprolactone/chitosan (PCL/CS) porous composite scaffolds were prepared by solution phase separation method, and the scaffolds were further enhanced by filling with nano-hydroxyapatite/polyvinyl alcohol (n-HA/PVA) composite slurry to prepare n-HA-PVA/PCL-CS composite porous scaffolds through slurry centrifugal filling technique. The morphology, microstructure, component, porosity and mechanical property of the scaffolds were characterized using scanning electron microscope, X-ray diffraction, Fourier transform infrared spectroscope, elemental analyzer and material test machine. The results show that PCL/CS scaffolds have mutual transfixion porous structure just like honeycombs. The porosity of the scaffolds can achieve 60-80%. As the content of CS increases, the porosity increases while the compressive strength decreases. After filled with HA/PVA composite slurry, the porosity of n-HA/PCL-CS composite scaffolds decreases, but still greater than 60%, while the compression modulus can increase to 25.7 MPa.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Biocompatible Materials / chemistry*
  • Chitosan / chemistry
  • Coated Materials, Biocompatible / chemistry
  • Compressive Strength
  • Durapatite / chemistry*
  • Materials Testing
  • Microscopy, Electron, Scanning
  • Nanocomposites / chemistry
  • Polyesters / chemistry
  • Polymers / chemistry*
  • Polyvinyl Alcohol / chemistry
  • Porosity
  • Spectroscopy, Fourier Transform Infrared
  • Tissue Engineering / methods
  • Tissue Scaffolds / chemistry*
  • X-Ray Diffraction

Substances

  • Biocompatible Materials
  • Coated Materials, Biocompatible
  • Polyesters
  • Polymers
  • polycaprolactone
  • Polyvinyl Alcohol
  • Chitosan
  • Durapatite