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Influence of apple flavor absorption on physical and mechanical properties of poly(ethylene terephthalate) films
Author(s) -
Denktaş Cenk,
Yıldırım Hüseyin,
San Nevim
Publication year - 2005
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.22712
Subject(s) - poly ethylene , ethylene , materials science , scanning electron microscope , fourier transform infrared spectroscopy , flavor , modulus , composite material , polymer chemistry , absorption (acoustics) , chemical engineering , chemistry , organic chemistry , biochemistry , engineering , catalysis
Poly(ethylene terephthalate) (PET) films (280‐μm film thickness), which are used in food packaging, were immersed into 160‐ and 320‐ppm apple flavor solution for 14, 28, and 56 days at 5, 25, and 40°C, respectively. At the end of this period, the changes in the PET films were investigated by measuring the mechanical and physical properties. The mechanical properties were determined by examining changes in the Young's modulus. The changes in the physical properties were investigated by Fourier transform IR spectroscopy and scanning electron microscopy (SEM). The formation of microcracks in the structure of PET films was observed by SEM. According to the results of those investigations, the apple flavor affects PET films, even at very low concentrations and temperatures. © 2005 Wiley Periodicals, Inc. J Appl Polym Sci 99: 1802–1807, 2006