Polímeros

 

Efecto de la fibra de agave de desecho en el reforzamiento de polipropileno virgen o reciclado

 

Effect of waste agave fiber on the reinforcing of virgin or recycled polypropylene

 

R.J. Sanjuan–Raygoza y C.F. Jasso–Gastinel*

 

Departamento de Ingeniería Química, Universidad de Guadalajara, Blvd. Gral. Marcelino Garcia B. # 1451, Guadalajara, Jalisco, México. * Autor para la correspondencia. E–mail: carlos.jasso@cucei.udg.mx Fax: (33) 13785900 ext 7404

 

Recibido 15 de Enero 2009
Aceptado 23 de Septiembre 2009

 

Resumen

La factibilidad que presenta la fibra de agave (tequilana weber) como agente de refuerzo de polipropileno, es estudiada utilizando un agente de acoplamiento para mejorar la interacción fibra–matriz. Para ello se prepararon compositos utilizando polipropileno virgen, reprocesado o reciclado, con diferentes concentraciones de fibra. Como referencia, se prepararon compositos con fibra de henequén. Se realizaron pruebas de esfuerzo–deformación, flexión y resistencia al impacto por caída de dardo, para evaluar el desempeño mecánico de los compositos. La respuesta mecánica y micrografías obtenidas por microscopía electrónica de barrido, muestran el beneficio de utilizar agente de acoplamiento.

Palabras clave: compositos, agente acoplante, reforzante, fibras celulósicas.

 

Abstract

The capability of agave fiber (Tequilana Weber) as a reinforcing agent for polypropylene is studied, using a coupling agent to improve polymer–fiber interaction. Composites using virgin, reprocessed or recycled polypropylene were prepared at different fiber concentrations. Henequen fiber instead of agave fiber was used to prepare other composites as reference. Stress–strain behavior, flexure and falling dart impact testing, were followed to evaluate composites performance. Mechanical response and SEM micrographs show the benefit obtained by the use of coupling agent.

Keywords: composites, coupling agent, reinforcing, cellulose fibers.

 

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