Studies on Different Properties of Composite Thin Films Made from Waxy Starch-citric acid and Starch-methyl Cellulose

مجله پژوهشهای علوم و صنایع غذایی ایران

Article 8, Volume 9, Issue 1 - Serial Number 23, April 2013   

Document Type: Research Article

DOI: 10.22067/ifstrj.v9i1.22975

Authors

Abdolhossien Aghababaei^* ; Reza Kasaai

Sari Agricultural Sciences and Natural Resources University

Abstract

Pollution arising from plastic waste materials caused a great worry for researchers who are interested in protection of environment. This problem shifts their subject to bio-polymers for applications in packaging industries. However, their low water barrier properties are a critical problem. The effects of citric acid and methyl cellulose on water vapor and oxygen permeabilities and mechanical properties of starch composite thin films have been studied. Water vapor permeability (WVP) has been measured using a vial coated by a film. Oxygen transmission rate (OTR) of a film was determined from measurement of peroxide value for a definite amount of oil that is placed in a vial and coated by the film. Mechanical properties were measured using a tensile machine. Increase in citric acid concentration up to 5% citric acid (w/w), resulted in a decrease in water vapor and oxygen permeabilities. A film containing 5% of citric acid exhibited a minimum value for WVP, whereas the value of WVP and elongation at the break increased and tensile strength decreased for a film containing 20% of citric acid (w/w). Increase in methyl cellulose up to 30% resulted in decrease in WVP and OTR.

Keywords

Waxy Starch; Citric acid; Methylcellulose; Water Vapor permeability; Mechanical properties

References

Ban, W., Song, J., Argyropoulos, D. S., and Lucia, L. A., 2006, Improving the Physical and Chemical Functionality of Starch-Derived Films with Biopolymers. Journal of Applied Polymer Science. 100, 2542–2548.

Borredon, E., Bikiaris, D., Prinos, J., Panayiotou, C., 1997, Properties of fattyacid esters of starch and their blends with LDPE. Journal of Applied Polymer Science. 65, 705–721.

Gaspar, M., Benko, Z. S., Dogossy, G., Reczey, K., and Czigany, T. 2005. Reducing water absorption in compostable starch-based plastics. Polymer Degradation and Stability. 90, 563-569.

Guilbert, S. 1986 .Technology and application of edible protective films. In Food Packaging and Preservation. Mathlouthi, M., Ed., Elsevier Applied Science: London, UK. pp. 371- 394.

Kristo, E., and Biliaderis, C. G., 2007, Physical properties of starch nanocrystalre in forced films. Carbohydrate Polymers. 29(1), 254–259.

Krumova, M., Lopez, D., Benavente, R., Mijangos, C., Perena, J. M., 2000, Effect of crosslinking on the mechanical and thermal properties of poly(vinyl alcohol). Polymer. 41, 9265.

Ma, X., Chang, P. R., Yu, J., and Stumborg, M., 2009, Properties of biodegradable citric acid-modified granular starch/thermoplastic pea starch composites. Carbohydrate Polymers. 75, 1–8.

Mali, S., Sakanaka, L. S., Yamashita, F., and Grossmann, M. V. E., 2005, Water sorption and mechanical properties of cassava starch films and their relation to plasticizing effect. Carbohydrate Polymers. 60, 283–289.

Mohanty, A. K., Misra, M., and Hinrichsen, G., 2000, Biofibres, biodegradable polymer and composites: An overview. Journal of Macromolecular Materials and Engineering.; 276, 277- 1–24.

Ning, W., Jiugao, Y., Xiaofei, M., and Ying, W., 2007, The influence of citric acid on the properties of thermoplastic starch/linear low-density polyethylene blends. Carbohydrate Polymers. 67, 446–453.

Ou, S., Wang, Y., Tang, S., Huang, C., and Jackson, M. G., 2005, Role of ferulic acid in preparing edible films from soy protein isolate. Journal of Food Engineering. 70, 205–210.

Park, S. K., Hettiarachchy, N. S., and Were, L., 2000, Degradation Behavior of Soy Protein Wheat Gluten Film in Simulated Soil Conditions. J. Agric. Food Chem., 48, 3027-3031.

Psomiadou, E., Arvanitoyannis, I., and Yamamoto, N., 1996, Edible films made from natural resources; microcrystalline cellulose (MCC), methylcellulose (MC) and corn starch and polyols—Part 2. Carbohydrate Polymers. 31, 193-204.

Ramaraj, B., 2007, Crosslinked poly (vinyl alcohol) and starch composite films. II. Physicomechanical, thermal properties and swelling studies. Journal of Applied Polymer Science. 103, 909–916.

Reddy, N., & Yang, Y., 2010, Citric acid cross-linking of starch films. Food Chemistry. 118, 702-711.

Shi, R., Bi, J., Zhang, Z., Zhu, A., Chen, D., Zhou, X., et al. 2008. The effect of citric acid on the structural properties and cytotoxicity of the polyvinyl alcohol/starch films when molding at high temperature. Carbohydrate Polymers. 74, 763–770.

Sreedhar, B., Chattopadhyay, D. K., Karunakar, M. S. H., and Sastry, A. R. K., 2006, Thermal and surface characterizationof plasticized starch polyvinyl alcohol blends crosslinked with epichlorohydrin". Journal of Applied Polymer Science. 101, 25–34.

Sreedhar, B., Sairam, M., Chattopadhyay, D. K., Syamala Rathnam, P. A., Mohan Rao, D. V., 2005, Thermal, mechanical, and surface characterization of starch poly(vinyl alcohol) blends and borax cross-linked films. Journal of Applied Polymer Science. 96, 1313–1322.

Standard test method for water vapor transmission of material. Standard Designation: E96. In Annual Book of ASTM , ASTM,. 2002

Standard Test Methods for Tensile Properties of Thin Plastic Sheeting. Standard Designation: D 882 - 02. Annual Book of ASTM Standards, 14.02, United States, ASTM 2007a.

Vilaseca, F., Mendez, J. A., Pelach, A., Llop, M., Canigueral, N., Girones., J, et al., 2007, Composite materials derived from biodegradable starch polymer and jute strands. Process Biochemistry, 42, 329–334.

Yang, C. Q., and Andrews, B. A. K., 1991, Infrared spectroscopic studies of the non-formaldehyde durable press finishing of cotton fabrics by use of polycarboxylic acids. Journal of Applied Polymer Science. 43, 1609–1616.

Yang, J., Webb, A., and Ameer, G., 2004, Novel citric acid-based biodegradable elastomers for tissue engineering. Advanced Materials. 16, 511–516.

Yin, Y., Li, J., Liu, Y., Li, Z., 2005, Starch crosslinked with poly(vinyl alcohol) by boric acid. Journal of Applied Polymer Science. 96, 1394–1397.