The effect of thermoplastic starch on the properties of HDPE/TPS blends during UV-accelerated aging


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.

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  1. 1.

    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

    Article  CAS  Google Scholar 

  2. 2.

    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

    Article  CAS  Google Scholar 

  3. 3.

    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

    Article  CAS  Google Scholar 

  4. 4.

    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

    Article  CAS  Google Scholar 

  5. 5.

    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

    Article  CAS  Google Scholar 

  6. 6.

    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

    Article  CAS  Google Scholar 

  7. 7.

    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

    Article  CAS  Google Scholar 

  8. 8.

    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

    Article  CAS  Google Scholar 

  9. 9.

    Favis BD, Rodriguez F, Ramsay BA (2003) Polymer compositions containing thermoplastic starch. US Patent 6,506,657

  10. 10.

    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

    Article  CAS  Google Scholar 

  11. 11.

    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

    Article  CAS  Google Scholar 

  12. 12.

    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

    Article  CAS  Google Scholar 

  13. 13.

    Peacock AJ (2000) Handbook of polyethylene. Marcel Dekker Inc, New York

    Google Scholar 

  14. 14.

    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

    Article  Google Scholar 

  15. 15.

    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

    Article  Google Scholar 

  16. 16.

    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

    Article  CAS  Google Scholar 

  17. 17.

    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

    Article  CAS  Google Scholar 

  18. 18.

    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

    Article  CAS  Google Scholar 

  19. 19.

    Albertsson AC, Karlsson S (1993) Environment-adaptable polymers. Polym Degrad Stab 41:345–349. doi:10.1016/0141-3910(93)90082-T

    Article  CAS  Google Scholar 

  20. 20.

    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

    Article  CAS  Google Scholar 

  21. 21.

    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

    CAS  Google Scholar 

  22. 22.

    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

    Article  CAS  Google Scholar 

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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.

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Correspondence to F. J. Rodríguez-González.

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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 (2011).

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  • Thermoplastic starch
  • Polymer blends
  • Photodegradation
  • Carbonyl index
  • Molecular weight
  • Crystallinity
  • Tensile properties