Thermal and Oxygen Barrier Properties of Chitosan Bionanocomposites by Reinforcement of Calcium Carbonate Nanopowder

Chitosan and calcium carbonate nanopowder（chitosan/CaCO3） bionanocomposites were prepared by solution method.Interaction between chitosan and CaCO3 was studied by Fourier transform infrared spectroscopy（FTIR）.Structure and surface morphology of chitosan/CaCO3 bionanocomposites were investigated by X...

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Bibliographic Details
Published in:Journal of materials science & technology 2014-08, Vol.30 (8), p.791-795
Main Authors: Swain, Sarat K., Dash, Satyabrata, Kisku, Sudhir K., Singh, Rajesh K.
Format: Article
Language:English
Subjects:
Barriers
Calcium carbonate
Chitosan
Field emission
Fourier transforms
Infrared spectroscopy
Nanocomposites
Nanostructure
Oxygen permeability
Thermal properties
Thermal stability
傅里叶变换红外光谱
场发射扫描电子显微镜
壳聚糖
氧气
碳酸盐
碳酸钙填料
纳米粉体
钙强化
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Summary:Chitosan and calcium carbonate nanopowder（chitosan/CaCO3） bionanocomposites were prepared by solution method.Interaction between chitosan and CaCO3 was studied by Fourier transform infrared spectroscopy（FTIR）.Structure and surface morphology of chitosan/CaCO3 bionanocomposites were investigated by X-ray diffraction（XRD） and field emission scanning electron microscopy（FESEM）,respectively.The energy dispersive X-ray spectroscopy（EDS） of chitosan/CaCO3 bionanocomposites was studied in order to establish the elements of composition.Thermal stability of prepared bionanocomposites was studied by thermogravimetric analysis（TGA） and a substantial increase of thermal stability of virgin chitosan was noticed due to incorporation of CaCO3 nanopowder.The oxygen permeability was reduced by three times as compared to the raw chitosan due to the dispersion of nano CaCO3 filler.Biodegradability and resistance towards dilute acid and alkali of the prepared bionanocomposite were investigated.The bionanocomposite having gas barrier and thermal stable property may be suitable for packaging and biomedical applications.
ISSN:1005-0302
1941-1162
DOI:10.1016/j.jmst.2013.12.017