High density polyethylene - hydroxyapatite composites synthetized by in situ ethylene polymerization

Vanessa Hermán; Arquimedes Karam; Carmen Albano; Gema González

High density polyethylene - hydroxyapatite composites synthetized by in situ ethylene polymerization

Authors

Vanessa Hermán Centro de Química, Laboratorio de Polímeros, Instituto Venezolano de Investigaciones Científicas (IVIC).
Arquimedes Karam Centro de Química, Laboratorio de Polímeros, Instituto Venezolano de Investigaciones Científicas (IVIC).
Carmen Albano Universidad Central de Venezuela, Facultad de Ingeniería, Escuela de Ingeniería Química
Gema González Centro Ing. Materiales y Nanotecnología, Laboratorio de Materiales, IVIC.

Keywords:

Synthesis, polyethylene, Composites, Hydroxiapatite, Thermal degradation

Abstract

A novel synthesis method of obtaining polyethylene - hydroxyapatite (HDPE-HA) composites is proposed using in situ ethylene polymerization, employing Cp2ZrCl2/MAO as catalytic system. In this work, the influence of different polymerization conditions on the HA dispersion was evaluated. The parameters studied were: stirring velocity (600-2000 rpm) and temperature (10-75°C). It was found that, combining high stirring velocities (2000 rpm) and low temperatures (10 °C), it was possible to reach good filler dispersion with the HA nanocrystals interconnected in a network without the presence of agglomerates. Thermal degradation of HDPE-HA composites involved chemical degradation reaction of first order, accompanied by formation of the gas phase inside the melt polymer.

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How to Cite

Hermán, V., Karam, A., Albano, C., & González, G. (2015). High density polyethylene - hydroxyapatite composites synthetized by in situ ethylene polymerization. Revista De La Facultad De Ingeniería UCV, 30(1), 211–218. Retrieved from https://saber.ucv.ve/ojs/index.php/rev_fiucv/article/view/15385