Abstract
The influence of thermoplastic starch (TPS) on the properties of UV-irradiated TPS/high-density polyethylene (HDPE) blends was investigated. Changes in chemical structure, molecular weight, crystallinity, and mechanical properties, as a function of exposure time, were determined using FTIR-spectroscopy, gel permeation chromatography (GPC), differential scanning calorimetry (DSC), and tensile tests. The inclusion of TPS influence neither the evolution of carbonyl index nor the molecular weight reduction of HDPE/TPS. In contrast, the presence of TPS in the blends increased the fusion enthalpy because of starch retrogradation. This increasing resulted in a corresponding increase of Young’s modulus of HDPE/TPS blends.
Similar content being viewed by others
References
Sebaa M, Servens C, Pouyet J (1992) Natural and artificial weathering of low-density polyethylene (LDPE): calorimetric analysis. J Appl Polym Sci 45:1049–1053. doi:10.1002/app.1992.070450614
Jabarin SA, Lofgren EA (1994) Photooxydative effects on properties and structure of high-density polyethylene. J Appl Polym Sci 53:411–423. doi:10.1002/app.1994.070530404
Briassoulis D (2006) Mechanical behavior of biodegradable agricultural films under real field conditions. Polym Degrad Stab 91:1256–1272. doi:10.1016/j.polymdegradstab.2005.09.016
Fayolle B, Collin X, Audouin L, Verdu J (2007) Mechanism of degradation induced embrittlement in polyethylene. Polym Degrad Stab 92:231–238. doi:10.1016/j.polymdegradstab.2006.11.012
Albertsson AC, Griffin GJL, Karlsson S, Nishimoto K, Watanabe Y (1994) Spectroscopic and mechanical changes in irradiated starch filled LDPE. Polym Degrad Stab 45:173–178. doi:10.1016/0141-3910(94)90134-1
Erlandsson B, Karlsson S, Albertsson AC (1997) The mode of action of corn starch and a prooxidant system in LDPE: influence of thermooxidation and UV-irradiation on the molecular weight changes. Polym Degrad Stab 55:237–245. doi:10.1016/S0141-3910(96)00139-5
Ratanakamnuan U, Aht-Ong D (2006) Photobiodegradation of low-density polyethylene/banana starch films. J Appl Polym Sci 100:2725–2736. doi:10.1002/app.23048
St-Pierre N, Favis BD, Ramsay BA, Ramsay JA (1997) Processing and characterization of thermoplastic starch/polyethylene blends. Polymer 38:647–655. doi:10.1016/S0032-386(97)81176-7
Favis BD, Rodriguez F, Ramsay BA (2003) Polymer compositions containing thermoplastic starch. US Patent 6,506,657
Rodriguez-Gonzalez FJ, Ramsay BA, Favis BD (2003) High performance LDPE/thermoplastic starch blends: a sustainable alternative to pure polyethylene. Polymer 44:1517–1526. doi:10.1016/S0032-3861(02)00907-2
Taguet A, Huneault MA, Favis BD (2009) Interface/morphology relationship in polymer blends with thermoplastic starch. Polymer 50:5733–5743. doi:10.1016/j.polymer.2009.09.055
Tena-Salcido CS, Rodríguez-González FJ, Méndez-Hernández ML, Contreras-Esquivel JC (2008) Effect of morphology on the biodegradation of thermoplastic starch in LDPE/TPS blends. Polym Bull 60:677–688. doi:10.1007/s00289-008-0903-0
Peacock AJ (2000) Handbook of polyethylene. Marcel Dekker Inc, New York
Kauráková M, Belton PS, Wilson RH, Hirsch J, Ebringerová A (1998) Hydration properties of xylan-type structures: an FTIR study of xylooligosaccharides. J Sci Food Agric 77:38–44. doi:10.1002/(SICI)1097-0010(199805)77
Kauráková M, Wilson RH (2001) Developments in mid-infrared FT-IR spectroscopy of selected carbohydrates. Carbohydr Polym 44:291–303. doi:10.1016/S0144-8617(00)00245-9
Yang R, Ying L, Yu J, Wang K (2006) Thermal oxidation products and kinetics of polyethylene composites. Polym Degrad Stab 91:1651–1657. doi:10.1016/j.polymdegradstab.2005.12.013
Kaczmarek H, Oldak D (2006) The effect of UV-irradiation on composting of polyethylene modified with cellulose. Polym Degrad Stab 91:2282–2291. doi:10.1016/j.polymdegradstab.2006.04.024
Roy PK, Surekha P, Raman R, Rajagopal C (2009) Investigating the role of metal oxidation state on the degradation behavior of LDPE. Polym Degrad Stab 94:1033–1039. doi:10.1016/j.polymdegradstab.2009.04.025
Albertsson AC, Karlsson S (1993) Environment-adaptable polymers. Polym Degrad Stab 41:345–349. doi:10.1016/0141-3910(93)90082-T
Shi R, Liu Q, Ding T, Han Y, Zhang L, Chen D, Tian W (2007) Ageing of soft thermoplastic starch with high glycerol content. J Appl Polym Sci 103:574–586. doi:10.1002/app.25193
Chinnaswamy R, Hanna MA, Zobel HF (1989) Microstructural, physiochemical, and macromolecular changes in extrusion-cooked and retrograded corn starch. Cereal Foods World 34:415–422
Rodriguez-Gonzalez FJ, Ramsay BA, Favis BD (2004) Rheological and thermal properties of thermoplastic starch with high glycerol content. Carbohydr Polym 58:139–147. doi:10.1016/j.carbpol.2004.06.002
Acknowledgments
This work was supported by the Mexican Council of Science and Technology (CONACyT), Project SEP2004-C01-46045. Dr. Méndez-Hernández also thanks CONACYT for a scholarship to carry out her PhD studies. Finally, authors wish to thank J. F. Zendejo and J. Rodriguez-Velazquez for their technical support.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Méndez-Hernández, M.L., Tena-Salcido, C.S., Sandoval-Arellano, Z. et al. The effect of thermoplastic starch on the properties of HDPE/TPS blends during UV-accelerated aging. Polym. Bull. 67, 903–914 (2011). https://doi.org/10.1007/s00289-011-0501-4
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00289-011-0501-4