THERMAL BEHAVIOR OF BANANA STARCH FILMS WITH DEGRADED POLYETHYLENE TEREPHTHALATE

  • A. Ramírez-Hernández Instituto de Química Aplicada, Universidad del Papaloapan
  • M. Valera-Zaragoza Instituto de Química Aplicada, Universidad del Papaloapan
  • A. Aparicio-Saguilán Instituto de Biotecnología, Universidad del Papaloapan
  • J.C. Conde-Acevedo Instituto de Química Aplicada, Universidad del Papaloapan
Keywords: thermal behavior, polyethylene therephthalate, banana starch, blends

Abstract

The thermal behavior and structural of banana starch films with degraded PET is discussed (S/PETdeg). The PET degradation and the characteristics of A/PETdeg films were analyzed by Fourier transformed infrared spectroscopy (FTIR), X-ray diffraction (XRD) and simultaneous thermal analysis (STA). Terephthalic acid, acid dimers and residual macromolecular chains were the degradation products of PET, which showed different thermal behavior. The thermal stability of the A/PETdeg composite films was lower than the individual components; this behavior was related to the breakdown of the starch amorphous domains (branching points of the amylopectine molecule) and due to the catalytic effect caused by the terephthalic acid during the thermal process. Additionally, the barrier to water absorption of the A/PETdeg films was increased depending on the content of PETdeg.

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Published
2020-02-06
How to Cite
Ramírez-Hernández, A., Valera-Zaragoza, M., Aparicio-Saguilán, A., & Conde-Acevedo, J. (2020). THERMAL BEHAVIOR OF BANANA STARCH FILMS WITH DEGRADED POLYETHYLENE TEREPHTHALATE. Revista Mexicana De Ingeniería Química, 14(2), 513-521. Retrieved from http://www.rmiq.org/ojs311/index.php/rmiq/article/view/1290