title: Barrier properties of nano silicon carbide designed chitosan nanocomposites.
abstract: Nano silicon carbide (SiC) designed chitosan nanocomposites were prepared by solution technique. Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD) were used for studying structural interaction of nano silicon carbide (SiC) with chitosan. The morphology of chitosan/SiC nanocomposites was investigated by field emission scanning electron microscope (FESEM), and high resolution transmission electron microscope (HRTEM). The thermal stability of chitosan was substantially increased due to incorporation of stable silicon carbide nanopowder. The oxygen permeability of chitosan/SiC nanocomposites was reduced by three folds as compared to the virgin chitosan. The chemical resistance properties of chitosan were enhanced due to the incorporation of nano SiC. The biodegradability was investigated using sludge water. The tensile strength of chitosan/SiC nanocomposites was increased with increasing percentage of SiC. The substantial reduction in oxygen barrier properties in combination with increased thermal stability, tensile strength and chemical resistance properties; the synthesized nanocomposite may be suitable for packaging applications.
authors.affiliation: Department of Chemistry, Veer Surendra Sai University of Technology, Burla, Sambalpur 768018, India.
authors.forename: Gopal C
authors.initials: GC
authors.lastname: Pradhan
authors.affiliation: Department of Chemistry, Upendra Nath College, Soro, Balasore 756045, India.
authors.forename: Satyabrata
authors.initials: S
authors.lastname: Dash
authors.affiliation: Department of Chemistry, Veer Surendra Sai University of Technology, Burla, Sambalpur 768018, India. Electronic address: swainsk2@yahoo.co.in.
authors.forename: Sarat K
authors.initials: SK
authors.lastname: Swain
mesh_terms: D017554:Carbon Compounds, Inorganic / Q000737:chemistry*; D048271:Chitosan / Q000737:chemistry*; D053761:Nanocomposites / Q000737:chemistry* / Q000648:ultrastructure; D010100:Oxygen / Q000737:chemistry; D010539:Permeability; D017655:Silicon Compounds / Q000737:chemistry*; D013696:Temperature; D013718:Tensile Strength; D014961:X-Ray Diffraction
chemical_list: D017554:Carbon Compounds, Inorganic; D017655:Silicon Compounds; D048271:Chitosan; D010100:Oxygen; C022088:silicon carbide
keywords: Chitosan; Nanocomposites; Oxygen permeability; Silicon carbide nanopowder; Thermal properties