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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License
Article
Preparation of Calcium Aluminosilicate Catalyst Foams from Eggshells and Polyurethane Template
Author(s)
La-Orngdow Mulsow and Nuchnapa Tangboriboon
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DOI:10.17265/2161-6221/2013.02.002
Affiliation(s)
Department of Materials Engineering, Faculty of Engineering, Kasetsart University, Bangkok 10900, Thailand
ABSTRACT
This research aims to form polymer matrix composites (PMCs) between calcium aluminosilicate (CaNaAlSi2O7) as a dispersed phase made from eggshells as the raw material via the sol-gel process and polyurethane foam (PU) as a matrix. The received PMCs samples were characterized phase formation by X-ray diffraction (XRD), microstructure by scanning electron microscopy, pore size and specific surface area by brunauer-emmett-teller (BET), mechanical properties by compression test, the functional groups by the Fourier transform infrared spectroscopy (FTIR), and the endothermic-exothermic reaction by differential thermal analysis (DTA). The CaNaAlSi2O7 acted as a dispersant in the polyurethane (PU) matrix, (PMCs). The best composition of composite materials is adding 10 vol% CaNaAlSi2O7 into PU matrix. The average particle size of CaNaAlSi2O7 is approximately 10 μm, non-agglomeration, and good dispersion in the entire volume of PU foam. The composite foam cells are well ordered and uniform in size and shape. The true density, elastic modulus and compressive strength of CaNaAlSi2O7/PU composites are 1.47 g/cm3, 0.0327 Kgf/mm2, and 0.0188 Kgf/mm2, respectively. The CaNaAlSi2O7/PU composites are semi-crystalline phase formation between tetragonal phase formations of CaNaAlSi2O7 and amorphous phase formation of PU.
KEYWORDS
Polymer matrix composites, eggshells, calcium aluminosilicate, catalyst, specific surface area.
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