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Properties and structural characterization of oxide starch/chitosan/graphene oxide biodegradable nanocomposites
Author(s) -
Ma Jun,
Liu Changhua,
Li Rui,
Wang Jia
Publication year - 2011
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.34901
Subject(s) - graphene , nanocomposite , materials science , oxide , ultimate tensile strength , chitosan , scanning electron microscope , thermogravimetric analysis , fourier transform infrared spectroscopy , casting , chemical engineering , composite material , thermal stability , nanotechnology , engineering , metallurgy
Novel chitosan (CS)/oxidized starch (OST)/graphene oxide (GO) nanocomposites (COST/GO‐ n ) films are prepared in a casting and solvent evaporation method. Fourier transform infrared spectroscopy, X‐ray diffractions, atomic force microscopy, scanning electron microscopy, transmission electron microscopy, thermal gravimetric analysis, tensile testing, and moisture uptake are used to study the structure and properties of these nanocomposites. To indicate the effect of carboxyl groups of OST, some results of the properties of CS/starch/GO nanocomposite (CST/GO‐ n ) were selected for control experimentation. Compared with the control CST/GO‐ n series, COST/GO‐ n films, which have the same component ration showed higher tensile strength (σ b ) and lower elongation at break (ε b ). Additionally, in the COST/GO‐ n series, the σ b increased with an increase of GO loading. However, higher proportion of GO could result in aggregations of GO nanosheets and deterioration of the film properties. Compared with the COST/GO‐0, the values of σ b and water resistance of the COST/GO‐4 containing 2.0 wt % of GO were improved by 57.7 and 20.1%, respectively. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012