Commenced in January 2007
Frequency: Monthly
Edition: International
Paper Count: 30669
Barrier Properties of Starch - Ethylene Vinyl Alcohol Nanocomposites

Authors: Farid Amidi-Fazli, Neda Amidi-Fazli


Replacement of plastics used in the food industry seems to be a serious issue to overcome mainly the environmental problems in recent years. This study investigates the hydrophilicity and permeability properties of starch biopolymer which ethylene vinyl alcohol (EVOH) (0-10%) and nanocrystalline cellulose (NCC) (1-15%) were used to enhance its properties. Starch -EVOH nanocomposites were prepared by casting method in different formulations. NCC production by acid hydrolysis was confirmed by scanning electron microscopy. Solubility, water vapor permeability, water vapor transmission rate and moisture absorbance were measured on each of the nanocomposites. The results were analyzed by SAS software. The lowest moisture absorbance was measured in pure starch nanocomposite containing 8% NCC. The lowest permeability to water vapor belongs to starch nanocomposite containing 8% NCC and the sample containing 7.8% EVOH and 13% NCC. Also the lowest solubility was observed in the composite contains the highest amount of EVOH. Applied Process resulted in production of bio films which have good resistance to water vapor permeability and solubility in water. The use of NCC and EVOH leads to reduced moisture absorbance property of the biofilms.

Keywords: Starch, hydrophilicity, Nanocrystalline cellulose, EVOH

Digital Object Identifier (DOI):

Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 2406


[1] S. K. Park, N. S. Hettiarachchy and L. Were, Degradation behavior of soy protein-wheat gluten films in simulated soil conditions. J. Agr. Food. Chem. 2000, 48: 3027-3031.
[2] A. Sorrentino, G. Gorrasi and V. Vittoria, Potential perspectives of bionanocomposites for food packaging applications. J. Trends. Food. Sci. Tech. 2007, 18: 84-95.
[3] S. Fischer, J. De Vliegar, T. Kock, L. Batenburg and H. I, Fischer. Green nanocomposite materials-new possibilities for bioplastics. Mater. Res. Soc. Simp. 2001, 661: 221-226.
[4] M. G. Pereda, Amica, I. R. and N. E. Marcovich, Structure and properties of nanocomposite films based on sodium caseinate and nanocellulose fibers. J. Food. Eng. 2011, 103 (1): 76-83.
[5] E. M. Teixeira, D. Pasquini, A.A.S. Curvelo, E. Corradini, M.N. Belgacem and A. Dufresne, Cassava bagasse cellulose nanofibrils reinforced thermoplastic cassava starch. Carbohyd. Polym. 2009, 78 (3): 422-431.
[6] G. Gong, J. Pyo, A. P. Mathew and K. Oksman, Tensile behavior, morphology and viscoelastic analysis of cellulose nanofiber-reinforced (CNF) polyvinyl acetate (PVAc). Compos. Part A-Appl. S. 2011, 42 (9): 1275-1282.
[7] P. R. Chang, R. Jian, P. Zheng, J. Yu and X. Ma, Preparation and properties of glycerol plasticized starch (GPS)/cellulose nanoparticle (CN) composites. Carbohyd. Polym. 2010, 79: 301-305.
[8] X. Cao, Y. Chen, P. R. Chang, A. D. Muir and G. Falk, Starch-based nanocomposites reinforced with flax cellulose nanocrystals. Exp. Polym. Let. 2008, 2 (7): 502-510.
[9] M. N. Angles and A. Dufresne, Plasticized starch/tunicin whiskers nanocomposites. Macromolecules. 2011, 34: 2921-2931.
[10] ASTM Standard test methods for water vapor transmission of material.E96-95 Annual book of ASTM, Philadelphia, PA: American Society for Testing and Materials, 1995.
[11] W. E. Gacitua, A. A. Ballerini and J. Zhang, Polymer nanocomposites: synthetic and natural fillers a review. Cienciay. techn. 2005, 7 (3): 159- 178.
[12] D. Bondeson, A. Mathew and K. Oksman, Optimization of the isolation of nanocrystals from microcrystalline cellulose by acid hydrolysis. Cellulose. 2006, 13: 171-180.