Abstract
Blends based on different ratios of plasticized starch (PLST) and poly(vinyl alcohol) (PVA) were prepared in the form of thin films by casting solutions. The effect of gamma-irradiation on thermal, mechanical and morphological properties was investigated. The results of thermogravimetric analysis (TGA), in terms of weight loss and rate of reaction, indicated that the thermal stability of PLST/PVA blends is higher than pure PLST. The differential scanning calorimetry (DSC) scans do not show the glass transition temperature (Tg) of PVA or PLST, but instead a new single glass transition, indicating the occurrence of compatibility. The mechanical testing of PLST/PVA blends showed that tensile strength and elongation at break were increased by increasing the ratio of PVA. At any ratio of PLST/PVA, the tensile strength and elongation at break was found to increase with increasing irradiation dose. As an application in the field of prolonging food preservation lifetime, solutions of gamma irradiated PLST/PVA blends in the presence of chitosan, as an antimicrobial material, were applied to Mango fruits by surface coating. The results showed that this technique would provide suitable materials for food preservation that withstanding the temperature and stresses.
Similar content being viewed by others
References
Matsumura S, Tomizawa N, Toki A, Nishikawa K, Toshima K (1999) Macromolecular 32:7753
Bergo PV, Carvalho RA, Sobral PJA, Santos RM, Da Silva FB, Prison JM, Solorza-feria J, Habitante AM (2007) Packag Technol Sci 21:85
Das K, Ray D, Bandyopadhyay NR, Gupta A, Sengupta S, Sahoo S, Mohanty A, Misra M (2010) Ind Eng Chem Res 49:2176
Russo MAL, Sullivan C, Rounsefell B, Halley PJ, Truss R, Clarke WP (2009) Bioresour Technol 100:1705
Siddaramaiah BR, Somashekar R (2004) Appl Polym Sci 91:630
Jayasekara R, Hading I, Bwater I, Christie GBY, Lonergan GT (2004) Polym Test 23:17
Yoon S, Chough S, Park H (2007) Appl Polym Sci 106:2485
Xiao C, Yang M (2006) Carbohydr Polym 64:37
Senna MH, Yossef AM, Hossam FM, El-Naggar AM (2007) J Appl Polym Sci 106:3273
Bastioli C (1995) Starch-polymer composites. In: Scott G, Gilead D (eds) Degradable, polymers, principles and applications. Chapman & Hall, London, p 112
Pimpa B, Muhammad K, Ghazali Zu, Hashim K, Hassan MA, Hashim D (2007) Carabohydr Polym 68:751
Chiellini E, Cinelli P, Imam SH, Mao L (2001) Biomacromolecules 2:1029
Elizondo NJ, Sobral PJA, Menegalli FC (2009) Carbohydr Polym 75:592
Iman SH, Cinelli P, Gordon SH, Chiellini E (2005) J Polym Env 13:47
Sreedhar B, Sairam M, Chattopadhyay DK, Rathnam PAS, Rao DVM (2005) J Appl Polym Sci 96:1313
Zhai ML, Yoshii F, Kume T, Hashimm K (2002) Carbohydr Polym 50:295
Senna MH, Abdel-Fattah A, Abdel-Monam YK (2008) Nucl Inst Meth B 266:2599
Singh A (2001) Radiat Phys Chem 60:453
Dole M (1972, 1973) In Radiation chemistry of macromolecules, Vol. 1 and 2. Academic Press, New York
Whitten KW, Gailelt KD. General chemistry with quantitative analysis, Saunders College Publishing
Sriram V, Subramari S, Radhakrishan G (2001) Polym Int 50:1124
Sundari F, Isni M (1983) J Appl Polym Sci 28:3123
Bicrano J (1993) In Prediction of polymer properties, Marcel Dekker, N Y, 16: 332
Van Krevelen DW (1990) In Properties of polymers. Elsevier. Amsterdam, Chap. 21
Senna M, Khalil SA, El-Naggar AM (2004) Egypt Text Polym Sci Tech 8:45
Sperling LH (1986) In Introduction to physical polymer science. John Wiley & Sons, New York, Ch. 6:277
Mali S, Sakanaka LS, Yamashita F, Grossmann ME (2005) Carbohydr Polym 60:283
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Senna, M.M., El-Shahat, H.A. & El-Naggar, A.W.M. Characterization of gamma irradiated plasticized starch/poly(vinyl alcohol) (PLST/PVA) blends and their application as protected edible materials. J Polym Res 18, 763–771 (2011). https://doi.org/10.1007/s10965-010-9473-6
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10965-010-9473-6