Effect Of Silane Modification On Mechanical And
Thermal Properties Of Ethylene Vinyl Acetate
(EVA)/zeolite Composites
Author(s)
N. D. Zaharri, N. Othman & Z. A. Mohd Ishak
Abstract
In this research, both untreated and silane treated zeolite filled ethylene vinyl
acetate (EVA) composites were prepared in a melt-mixing process and followed
by compression molded using hot press machine according to standard test
specimen. For silane surface treatment, zeolite was treated with
3-aminopropyltriethoxysilane (AMPTES) prior to the mixing process. The effect
of untreated and AMPTES treated zeolite loading from 5 up to 25 volume
percentages on the properties of EVA/zeolite composites were evaluated. A
combination of Fourier Transform Infrared Radiation (FTIR) and scanning
electron microscopy (SEM) analysis were done to characterize the resultant
treated zeolite. Tensile test was performed in order to study the mechanical
properties of the composites. EVA filled with AMPTES treated zeolite showed
better tensile properties compared to EVA filled with untreated zeolite, which
might be an indication of enhanced dispersion of zeolite in the composites.
Meanwhile for morphological study using SEM, the micrograph of
EVA/untreated zeolite composites exhibit several voids, agglomerations and also
brittle morphology. On the contrary, the micrograph of AMPTES treated zeolite
filled EVA composites showed more fibrilous and ductile morphology which
suggests that the silane treatment is capable of improving an interfacial adhesion
between EVA matrix and zeolite. 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 silane treatment increases both decomposition and melting temperature of
EVA/zeolite composites.
Keywords: EVA, zeolites, silane treatment, tensile properties, morphology,
thermal stability.
Keywords
Keywords: EVA, zeolites, silane treatment, tensile properties, morphology,
thermal stability.
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