Zaharri, N. D. and Othman, N. and Mohd Ishak, Z. A.
(2013)
Effect of Zeolite Modification via Cationic Exchange Method on Mechanical, Thermal, and Morphological Properties of Ethylene Vinyl Acetate/Zeolite Composites.
Advances in Materials Science and Engineering, 2013 (394656).
pp. 1-9.
ISSN 1687-8434
Abstract
In this research, organozeolite filled ethylene vinyl acetate (EVA) composites were prepared in a melt-mixing process and followed
by compressionmolding using hot press machine according to standard test specimen. Prior to mixing process, zeolitewasmodified
via cationic exchange of alkylammonium ions.The effect of zeolite or organozeolite loading from 5 up to 25 volume percentages
on the properties of EVA/zeolite composites was evaluated. A combination of Fourier Transform Infrared Radiation (FTIR) and
scanning electron microscopy (SEM) coupled with energy dispersive X-ray (EDX) analysis were done to characterize the resultant
organoclay. Tensile test was performed in order to study themechanical properties of the composites. EVA filled with organozeolite
showed better tensile properties compared to EVA filled with unmodified zeolite, which might be an indication of enhanced
dispersion of organophilic clay in the composites. Meanwhile, morphological study using SEM revealed the fibrillation effect of
organozeolite. Besides, thermal properties of the composites were also characterized by using thermogravimetric analysis (TGA)
and differential scanning calorimetry (DSC). The results showed that the application of the cation exchange treatment increases
both decomposition and melting temperature of EVA/zeolite composites.
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