Eggshell, a new bio-filler for polypropylene composites

Toro, P; Quijada, R; Yazdani-Pedram, M; Arias, JL


Chicken eggshell (ES) is an industrial byproduct containing 95% calcium carbonate, and its disposal constitutes a serious environmental hazard. Different proportions of chicken eggshell as bio-filler for polypropylene (PP) composite were compared with different particle sizes and proportions of commercial talc and calcium carbonate fillers by tensile test. The Young's modulus (E) was improved with the increment of ES content, and this bio-filler was better than all types of carbonate fillers with different particle sizes used in this study. Although ES composites showed lower E values than talc composites, talc filler could be replaced by up to 75% with ES while maintaining a similar stiffness and E compared to the talc composites. Scanning electron microscopy showed an improved interfacial bonding on the tensile fractured surface. The improvement in the mechanical properties was attributed to a better ES/matrix interface related to the geometric ratio of the ES particles similar to talc particles. © 2007 Elsevier B.V. All rights reserved.

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Título según WOS: Eggshell, a new bio-filler for polypropylene composites
Título según SCOPUS: Eggshell, a new bio-filler for polypropylene composites
Título de la Revista: MATERIALS LETTERS
Volumen: 61
Número: 22
Editorial: Elsevier
Fecha de publicación: 2007
Página de inicio: 4347
Página final: 4350
Idioma: English