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General Information
Editor-in-chief
Prof. T. Hikmet Karakoc
Anadolu University, Faculty of Aeronautics and Astronautics, Turkey

IJET 2015 Vol.7(5): 397-400 ISSN: 1793-8236
DOI: 10.7763/IJET.2015.V7.826

Evaluation of the Effect of Drying and Rewetting Cycles in Eucalyptus Pulps

Julian E. Mejia B., Juliano Fiorelli, Holmer Savastano Jr., and Lisa Vidil
Abstract—In the fibrocement industry of tiles and sheets, various kinds of natural fibers are used as reinforcement to improve the properties of the products. Although the use of fibrocement material presents a great potential due to the low cost and the high availability of vegetable fibers, several investigations have showed a behavior of low durability and rapid deterioration of the cellulosic material in an alkaline medium. With the purpose of contributing to this knowledge, the present study evaluated bleached and unbleached cellulosic pulp of eucalyptus before and after the thermal treatment consisting of 4 cycles of drying and rewetting denominated hornification. Analysis by scanning electron microscopy (SEM) and X-ray diffraction (XRD) were performed. SEM images indicated morphological changes on the surface of treated bleached and unbleached eucalyptus cellulosic pulps. Based on XRDresults, the treatment hornification did not cause the deterioration of crystalline cellulose of the fibers.

Index Terms—Cement-based matrix, cellulosic fiber, hornification, composite.

Julian Eduardo Mejia Ballesteros, Juliano Fiorelli, and Holmer Savastano Junior are with Animal Science, University of São Paulo, Pirassununga-SP, CEP, 13635-900, Brasil (e-mail: Julian.mejia@usp.br, julianofiorelli@usp.br, holmersj@usp.br).
Lisa Vidil is with the Laboratory COVACHIM-M2A3592, UFR SEN, University of the French West Indies and French Guiana, BP 230, 97157 Pointe-à-Pitre Cedex, Guadeloupe, France (e-mail: lisa.vidil@univ-ag.rf)

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Cite: Julian E. Mejia B., Juliano Fiorelli, Holmer Savastano Jr., and Lisa Vidil, "Evaluation of the Effect of Drying and Rewetting Cycles in Eucalyptus Pulps," International Journal of Engineering and Technology vol. 7, no. 5, pp. 397-400, 2015.

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