The effect of temperature and water absorption on enzymatic degradation of starch / polyvinyl alcohol blend film by α-Amylase

الموضوعات : Journal of the Iranian Chemical Research

Mohammad Taghi Taghizadeh ¹ (Department of Physical Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz, Iran.)
Zahra Abbasi ² (Department of Physical Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz, Iran.)

تاريخ الإرسال : 20 الأحد , محرم, 1432 تاريخ التأكيد : 08 الجمعة , رجب, 1432 تاريخ الإصدار : 15 الأحد , ربيع الثاني, 1432

الکلمات المفتاحية: TPS, PVA, Blend, Enzymatic degradation, &alpha, -amylase,

ملخص المقالة :

Thermoplastic starch (TPS) materials present several advantages to the plastic industry andwhen blended with other materials they can exhibit improved mechanical and moisturesensitivity properties compared to pure TPS materials. Further investigations on TPS: PVAblends are of particular interest due to their excellent compatibility and improved properties suchas tensile strength, elongation, toughness and processability, predominantly due to animprovement in melt strength compared to pure TPS material. The aims of the study were toinvestigate the effect of varying polyvinyl alcohol content within the TPS blends on the rate andextent of starch enzymatic hydrolysis using enzyme alpha-amylase. Analyses the enzymaticdegradation behavior of poly(vinyl alcohol) with starch was based on the determinations ofWeight loss and the reducing sugars. The degraded residues have been examined by FT-IRspectroscopy and scanning electronic microscopy (SEM).

المصادر:

[1] Y. Doi, K. Fukuda, editors, Biodegradable Plastics and Polymers, Amsterdam, Elsevier, 1994.
[2] M.T. Taghizadeh, N. Nalbandi, A. Bahadori, Polymer Lett. 2 (2008) 65–76.
[3] M.T. Taghizadeh, A. Mehrdad, Ultrason. Sonochem. 10 (2003) 309–313.
[4] S. Rath, R. Singh, J. Applied Polymer Sci. 70 (1998) 1795–1810.
[5] B. Chen, R. Julian, G. Evans, Carbohydrate Polymers 61 (2005) 455-463.
[6] L. Averous, J. Macromolecular Sci. Part C-Polymer Reviews, C44 (2004) 231-274.
[7] M. Vert, L. Feijen, A. Albertsson, G. Scott, editors, Biodegradable Polymers and Plastics. Wiltshire,
UK: Redwood Poss Ltd, The Royal Society of Chemistry, 1992.
[8] P.A. Wagner, B.J. Little, K.R. Hart, R.I. Ray, Int Biodeterior Biodegrad 38 (1996) 125–32.
[9] L. Avérous, L. Moro, P. Dole, C. Fringant, Polymer 41 (2000) 4157–4167.
[10] M. Sene, C. Thevanot, L. Prioul, J. Cereal Sci. 26 (1997) 211–221.
[11] T. Hayashi, Prog. Polym. Sci. 19 (1994) 663–702.
[12] C.S. Pereira, A.M. Cunha, R.L. Reis, B. Vazquez, J.S. Roman, J. Mater. Sci. Mater. Med. 9 (1998)
825-830.
[13] N. Teramoto, T. Motoyama, R. Yosomiya, M. Shibata, European Polym. J. 39 (2003) 255–261.
[14] K. Sandhu, N. Singh, N. Malhi, Food Chem. 89 (2005) 541–548.
[15] T. Ouchi, S. Ichimura, Y. Ohya, Polymer 47 (2006) 429–434.
[16] Z. Konsula, M. Liakopoulou-Kyriakides, Process Biochem. 39 (2004) 1745-1749.
[17] G.M.A. Beynum, J.A. Roels, Starch Conversion Technology, Marcel Dekker, Inc, New York, 1985.
[18] C. Xiao, M. Yang, Carbohydr. Polym. 64 (2006) 37–40.
[19] Y. Yun, Y. Na, S. Yoon, J. Polymers Environm. 14 (2006) 71-77.
[20] Griffin GJL, ACS Advance in Chemistry, 134, 1975.
[21] C. Bastioli, V. Bellotti, L.D. Giudice, G. Gilli, Microstructure and Biodegradability of Mater-bi
Products. In Biodegradable Poly- mers and Plastics, The Royal Society of Chemistry, Cambridge,
1992.
[22] G.L. Miller, Anal. Chem. 3 (1959) 426–428.
[23] C.V. Benedict, W.J. Cook, P. Jarrett, J.A. Cameron, S.J. Huang, J.P. Bell, J. Applied Polymer Sci. 28
(1983) 327-334.
[24] M. Huskic, I. Brnardic, Z. Igon, M. Ivankovic, 354 (2008) 3326–3331.
[25] D. Demirgo, C. Elvirs, J.F. Mano, A.M. Cunha, E. Piskin, R.L. Reis, Polymer Degradation Stability,
70 (2000) 161-170.
[26] Y.X. Xu, M.A. Hanna, Carbohydrate Polymers, 59 (2005) 521-529.
[27] D.H. Kim, S.K. Na, J.S. Park, J. Applied Polymer Sci. 88 (2003) 2100-2017.
[28] A.K. Bajpai, J. Shrivastava, Polym. Int. 54 (2005) 1524-1536.
[29] O. Araju, A.M. Cunha, M. Mota, Biomaterials 25 (2004) 2687-2693.
[30] N. Follain, C. Joly, P. Dole, C. Bliard, Carbohydrate Polymers 60 (2005) 185-192.
[31] Y.X. Xu, V. Miladinov, M.A. Hanna, Cereal Chem. 81 (2004) 735-740.
[32] S. Iuliana, C. Maria, B. Ruxanda, V. Cornelia, Polym. Degradation Stability 93 (2008) 1884-1890.
[33] K. Pal, A.K. Banthia, D.K. Majumdar, Trends Biomater. Artif. Organs 20 (2006) 59–67.