Commenced in January 2007
Frequency: Monthly
Edition: International
Paper Count: 30169
Starch Based Biofilms for Green Packaging

Authors: Roshafima R. Ali, W. A. Wan Abdul Rahman, Rafiziana M. Kasmani, N. Ibrahim

Abstract:

This current research focused on development of degradable starch based packaging film with enhanced mechanical properties. A series of low density polyethylene (LDPE)/tapioca starch compounds with various tapioca starch contents were prepared by twin screw extrusion with the addition of maleic anhydride grafted polyethylene as compatibilizer. Palm cooking oil was used as processing aid to ease the blown film process, thus, degradable film can be processed via conventional blown film machine. Studies on their characteristics, mechanical properties and biodegradation were carried out by Fourier Transform Infrared (FTIR) spectroscopy and optical properties, tensile test and exposure to fungi environment respectively. The presence of high starch contents had an adverse effect on the tensile properties of LDPE/tapioca starch blends. However, the addition of compatibilizer to the blends improved the interfacial adhesion between the two materials, hence, improved the tensile properties of the films. High content of starch amount also was found to increase the rate of biodegradability of LDPE/tapioca starch films. It can be proved by exposure of the film to fungi environment. A growth of microbes colony can be seen on the surface of LDPE/tapioca starch film indicates that the granular starch present on the surface of the polymer film is attacked by microorganisms, until most of it is assimilated as a carbon source.

Keywords: Degradable polymer, starch based biofilms, blown film extrusion, green food packaging.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1332418

Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 4597

References:


[1] Y. Zheng, E. K. Yanful, "A Review of plastic Waste Biodegradation," Critical Review in Biotechnology, vol. 25, pp. 243-250, 2005.
[2] F. Khabbaz, A. C. Albertsson, S. Karlsson, "Trapping of Volatile Low Molecular Weight Photoproducts in Inert and Enhanced Degradable LDPE," Polymer Degradation and Stability, vol. 61, pp. 329-342, 1998.
[3] B. Erlandsson, S. Karlsson, A. C. Albertsson, "The Mode of Action of Corn Starch and a Prooxidant System in LDPE: Influence of Thermooxidation and UV Irradiation on the Molecular Weight Changes," Polymer Degradation and Stability, vol. 55, pp. 237-245, 1997.
[4] 0. Akaranta, G. H. Oku, "Erratum to: Some Properties of Cassava Mesocarp Carbohydrates-Low Density Polyethylene Blends," Carbohydrate Polymers, vol. 34, pp. 403-405, 1999.
[5] I. Arvanitoyannis, C. G. Biliaderis, H. Ogawa, N. Kawasaki, "Biodegradable Films Made from Low Density Polyethylene (LDPE), Rice Starch and Potato Starch for Food Packaging Application: Part I," Carbohydrate Polymer, vol. 36, pp. 89-104, 1998.
[6] A. Manzur, M. Limon-Gonzalez, E. Favela-Torres, "Biodegradation of Physicochemically Treated LDPE by a Consortium of Filamentous Fungi," Journal of Applied Polymer Science, vol. 92, pp. 265-271, 2004.
[7] R. N. Tharanathan "Biodegradable Films and Composite Coatings: Past, Present and Future. Trends in Food Science & Technology," vol. 14, pp. 71-78, 2003.
[8] I. D. Danjaji, R. Nawang, U. S. Ishiaku, S. Ismail, Z. A. Mohd Ishak ZA, "Degradation Studies and Moisture Uptake of Sago-Starch Filled Linear Low-Density Polyethylene Composites," Polymer Test, vol. 21, pp. 75¬81, 2002.
[9] P. B. Shah, S. Bandopadhyay, J. R. Bellare, "Environmentally degradable starch filled low density polyethylene," Polymer Degradation and Stability, vol. 47, pp. 165-173, 1995.
[10] S. Theubaud, J. Aburto, I. Alric, E. Borredon, D. Bikiaris, J. Prinos, C. Panayiotou, "Properties of Fatty Acid Estera of Starch and their Blends with LDPE," Journal of Applied Polymer Science, vol. 17, pp. 705-721, 1997.
[11] R. Chandra, R. Rustgi, "Biodegradable Polymers," Prog. Polym. Sci, vol. 23, pp. 1273-1335, 1998.
[12] W. Liu, Y. J. Wang, Z. Sun, "Effects of Polyethylene-grafted-Maleic Anhydride (PE-g-MA) on Thermal Properties, Morphology and Tensile Properties of Low Density Polyethylene (LDPE) and Corn Starch Blends," Journal of Applied polymer Science, vol. 88, pp. 2904-2911, 2003.
[13] R. Baldev, S. R. Udaya, Siddaramaiah, "Low Density Polyethylene/Starch Blend Films for Food Packaging Application," Advance in Polymer Technology, vol. 42, pp. 32-45, 2004.