Enhancing the mechanical properties of electrospun chitosan/poly(vinyl alcohol) fibers by mineralization with calcium carbonate

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Mineralization of electrospun chitosan/poly(vinyl alcohol) (PVA) with CaCO3 was performed as a reinforcement strategy to produce a biocompatible material with good mechanical properties. Disk-like layered and cubic CaCO3 particles were formed when the composites were dried at low and high concentrations of CO2, respectively, followed by a transformation of the amorphous CaCO3 into calcite. The highest ultimate stress value was found to be 44 +/- 3.2 MPa for the composite with 17 wt% of CaCO3, which was crosslinked by glutaraldehyde and dried at high concentrations of CO2. The highest value of the Young's modulus was 2328.35 +/- 204.9 MPa for the composite with 34 wt% of CaCO3 that was dried at high concentrations of CO2. The bioactivity of the obtained composites was tested by 6-day incubation in simulated body fluid (SBF), resulting in flake-like apatite structures grown on the composite surface. The composites retained around 50 % of their ultimate stress value after immersion in SBF. The mineralization of electrospun chitosan/PVA with CaCO3 produced composites with enhanced mechanical properties, which can be potentially used as scaffolds in tissue engineering applications
Publisher
SPRINGER
Issue Date
2016-08
Language
English
Article Type
Article
Keywords

POLY(EPSILON-CAPROLACTONE) FIBERS; BONE; HYDROXYAPATITE; COMPOSITES; CHITOSAN; SCAFFOLDS; GROWTH; FILMS; FABRICATION; PHOSPHATE

Citation

JOURNAL OF MATERIALS SCIENCE, v.51, no.16, pp.7742 - 7753

ISSN
0022-2461
DOI
10.1007/s10853-016-0056-8
URI
http://hdl.handle.net/10203/212238
Appears in Collection
CBE-Journal Papers(저널논문)
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