title: Synthesis of gas barrier starch by dispersion of functionalized multiwalled carbon nanotubes.
abstract: Nanocomposite films were prepared successfully by simple solution casting method from plasticized starch/functionalized multiwalled carbon nanotubes (PS/f-MWCNTs). The interaction of starch with functionalized multiwalled carbon nanotube (f-MWCNT) was evidenced by ultraviolet-visible (UV-vis) spectroscopy and Fourier transforms infrared (FTIR) spectroscopy. The morphological and thermal properties of the composite films were investigated using scanning electron microscope (SEM), high resolution transmission electron microscope (HRTEM), X-ray diffraction (XRD) and thermo gravimetric analysis (TGA). The electrical conductivity of the composites was increased significantly by sixteen times, from 0.1×10(-9) to 1.6×10(-9) S/cm. This reveals better dispersion of f-MWCNT with low concentration of f-MWCNT. The oxygen permeability of the composites was reduced by half as compared to virgin PS. This indicates better dispersion of f-MWCNT in PS matrix due to formation of strong hydrogen bonding with PS matrix.
authors.affiliation: Department of Chemistry, Veer Surendra Sai University of Technology, Burla, Sambalpur 768 018, India. swainsk2@yahoo.co.in
authors.forename: Sarat K
authors.initials: SK
authors.lastname: Swain
authors.forename: Ajaya K
authors.initials: AK
authors.lastname: Pradhan
authors.forename: Hari S
authors.initials: HS
authors.lastname: Sahu
mesh_terms: D053761:Nanocomposites / Q000737:chemistry* / Q000648:ultrastructure; D037742:Nanotubes, Carbon / Q000737:chemistry* / Q000648:ultrastructure; D012275:Oryza / Q000737:chemistry; D010100:Oxygen / Q000737:chemistry; D010539:Permeability; D013056:Spectrophotometry, Ultraviolet; D013213:Starch / Q000031:analogs & derivatives* / Q000737:chemistry* / Q000648:ultrastructure; D013499:Surface Properties; D013818:Thermogravimetry
chemical_list: D037742:Nanotubes, Carbon; D013213:Starch; D010100:Oxygen