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Preparation and characterization of glycerol plasticized-pea starch/ZnO–carboxymethylcellulose sodium nanocomposites
- Source :
-
Bioresource Technology . Jun2009, Vol. 100 Issue 11, p2832-2841. 10p. - Publication Year :
- 2009
-
Abstract
- Abstract: Among natural polymers, starch is one of the most promising biodegradable materials because it is a renewable bioresource that is universally available and of low cost. However, the properties of starch-based materials are not satisfactory. One approach is the use of nano-filler as reinforcement for starch-based materials. In this paper, a nanocomposite is prepared using ZnO nanoparticles stabilized by carboxymethylcellulose sodium (CMC) as the filler in glycerol plasticized-pea starch (GPS) matrix by the casting process. According to the characterization of ZnO–CMC particles with Fourier transform infrared (FTIR), Ultraviolet–visible (UV–vis), X-ray diffraction (XRD), transmission electron microscope (TEM) and thermogravimetric analysis (TG), ZnO (about 60wt%) is encapsulated with CMC (about 40wt%) in ZnO–CMC particles with the size of about 30–40nm. A low loading of ZnO–CMC particles can obviously improve the pasting viscosity, storage modulus, the glass transition temperature and UV absorbance of GPS/ZnO–CMC nanocomposites. When the ZnO–CMC contents vary from 0 to 5wt%, the tensile yield strength increase from 3.94MPa to 9.81MPa, while the elongation at break reduce from 42.2% to 25.8%. The water vapor permeability decrease from 4.76×10−10 to 1.65×10−10 gm−1 s−1 Pa−1. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 09608524
- Volume :
- 100
- Issue :
- 11
- Database :
- Academic Search Index
- Journal :
- Bioresource Technology
- Publication Type :
- Academic Journal
- Accession number :
- 36896944
- Full Text :
- https://doi.org/10.1016/j.biortech.2008.12.045