TY - JOUR
T1 - The effect of thermoplastic starch on the properties of HDPE/TPS blends during UV-accelerated aging
AU - Méndez-Hernández, M. L.
AU - Tena-Salcido, C. S.
AU - Sandoval-Arellano, Z.
AU - González-Cantú, M. C.
AU - Mondragón, M.
AU - Rodríguez-González, F. J.
N1 - Funding Information:
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.
PY - 2011/9
Y1 - 2011/9
N2 - 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.
AB - 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.
KW - Carbonyl index
KW - Crystallinity
KW - Molecular weight
KW - Photodegradation
KW - Polymer blends
KW - Tensile properties
KW - Thermoplastic starch
UR - http://www.scopus.com/inward/record.url?scp=80051602200&partnerID=8YFLogxK
U2 - 10.1007/s00289-011-0501-4
DO - 10.1007/s00289-011-0501-4
M3 - Artículo
SN - 0170-0839
VL - 67
SP - 903
EP - 914
JO - Polymer Bulletin
JF - Polymer Bulletin
IS - 5
ER -