Keywords
poly (3-hydroxybutyrate) PHB
Compatibilizing agent, Polymer mixtures
How to Cite
Abstract
The properties of blends of the poly (3-hydroxybutyrate) PHB biopolymer were investigated with a polyolefin domestic, linear low density polyethylene (PELBD), mixed in proportions (polyolefin/PHB) (25/75); And (polyolefin/PHB/AC) (22/72/6); The PELBD/PHB mixtures showed by FTIR spectroscopy displacements of the band corresponding to the C=O group evidencing hydrogen bonded interactions favored in the mixtures by the compatibilizing agent (AC). From the 20 days of subjecting the PHB biopolymers to compost, differences in thermal properties were observed. In the PELBD/PHB mixtures (25/75), the dispersed phase of the PELBD gave the PHB matrix a nucleating effect which facilitated the formation of the crystals in the mixture when it was cooled from the molten state. Over time in the compost, the crystals in the PELBD/PHB mixtures were rearranged as a product of degradation.
Key words: Low density linear polyethylene, poly (3-hydroxybutyrate) PHB, Compatibilizing agent, Polymer mixtures.
References
[1]A. Lorenzo, “Caracterización de una polimezcla biodegradable a base de Poli(e-caprolactona) y almidón de maíz”, Trabajo de doctorado. Departamento de química, Universidad Simón Bolívar, Caracas. 2002.
[2] R. Lenz and H. Robert, “Bacterial polyesters: biosynthesis, biodegradable plastics and biotechnology”, Biomacromolecules, 6: 1-7, 2005.
[3] R. Perera, C. Albano, Y. Sanchez, A. Karam, P. Silva and J. Pastor, “Changes in Structural Characteristics of LLDPE Functionalized with DEM Using Gamma-Irradiation”. Journal of Applied Polymer Science, Vol. 124, pp.1106–1116. 2012.
[4]M. Sabino, D. Morales, G. Ronca and J. Feijoo, “Estudio de la degradación hidrolítica de un copolímero biodegradable”, Acta científica venezolana. 54: pp 18-27, 2003.
[5]S. Kalil, “Seguimiento del proceso de humificación en compost inoculado”. Proyecto de grado, Facultad de ciencias, Pontificia Universidad Javeriana. Bogotá D.C. 2007.
[6] N. Gonzáles, R. Lorenzo, W. Figuera, N. Bracro and B. Rojas, “Copolimerización de polipropileno isotático de dietiléster del ácido maleico mediante reacciones de funcionalización”, XII Coloquio venezolano de polímeros, 9(3), 2007.
[7]W. Figuera, B. Rojas, J. Prin, V. Castillo and A. Müller, “Evaluación de las mezclas basadas en el polímero biodegradable polihidroxibutirato y polietileno funcionalizado con acrilamida y dietilmaleato”, Revista iberoamericana de polímeros. 9(3). 2007.
[8] A. Lorenzo, M. Sabino and A. Müller, “Estudio de la biodegradación de una polimezcla de poli(e-caprolactona) y almidón de maíz (PCL/Alm) y su compatibilización con almidón plastificado”, Revista latinoamericana de metalurgia y materiales. 23(2): pp. 25-35, 2005.
[9] F. Avalos, L. Ramos, A. Espinosa, J. Guillermo, E. Ramirez, S. Sanchez, J. Ortiz, and E. Martinez, “Effect of Different Nucleating Agents on the Crystallization of Ziegler-Natta Isotactic Polypropylene”, International Journal of Polymer Science Volume, Article ID 9839201, 2016.