TY - JOUR
T1 - Morphological and mechanical properties dependence of PLA amount in PET matrix processed by single-screw extrusion
AU - Torres-Huerta, A. M.
AU - Del Angel-López, D.
AU - Domínguez-Crespo, M. A.
AU - Palma-Ramírez, D.
AU - Perales-Castro, M. E.
AU - Flores-Vela, A.
N1 - Publisher Copyright:
© 2016 Taylor & Francis.
PY - 2016/5/2
Y1 - 2016/5/2
N2 - ABSTRACT: In this study, the dependence on the morphology and mechanical properties was analyzed when different amounts of polylactic acid are added to the polyethylene terephthalate polymer matrix using single-screw extrusion. Thermograms of the polymer blends obtained by differential scanning calorimetry couple to thermal gravimetric analysis show a displacement in the glass transition temperature with the amount of polylactic acid (1, 2.5, 5, and 7.5 wt%) added to the polymer matrix. Scanning electron microscopy and atomic force microscopy images showed two different kinds of morphology, both characteristics of miscible and partially miscible polymer blends. Fourier transform infrared spectroscopy measurements confirmed a physical interaction by hydrogen bond in the polymer blends. The impact resistance and tensile strength are reduced with the polylactic acid addition and are influenced by the fraction of segments of hydrogen bonded in the polyethylene terephthalate/polylactic acid blends as well as their miscibility.
AB - ABSTRACT: In this study, the dependence on the morphology and mechanical properties was analyzed when different amounts of polylactic acid are added to the polyethylene terephthalate polymer matrix using single-screw extrusion. Thermograms of the polymer blends obtained by differential scanning calorimetry couple to thermal gravimetric analysis show a displacement in the glass transition temperature with the amount of polylactic acid (1, 2.5, 5, and 7.5 wt%) added to the polymer matrix. Scanning electron microscopy and atomic force microscopy images showed two different kinds of morphology, both characteristics of miscible and partially miscible polymer blends. Fourier transform infrared spectroscopy measurements confirmed a physical interaction by hydrogen bond in the polymer blends. The impact resistance and tensile strength are reduced with the polylactic acid addition and are influenced by the fraction of segments of hydrogen bonded in the polyethylene terephthalate/polylactic acid blends as well as their miscibility.
KW - Extrusion method
KW - Mechanical properties
KW - Miscibility
KW - PET/PLA blends
UR - http://www.scopus.com/inward/record.url?scp=84971422152&partnerID=8YFLogxK
U2 - 10.1080/03602559.2015.1132433
DO - 10.1080/03602559.2015.1132433
M3 - Artículo
SN - 0360-2559
VL - 55
SP - 672
EP - 683
JO - Polymer - Plastics Technology and Engineering
JF - Polymer - Plastics Technology and Engineering
IS - 7
ER -