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The effect of compatibilizer and coupling agent on properties and characterization of ethylene vinyl acetate / natural rubber / potash feldspar composites

Doctor of Philosophy in Materials Engineering

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Bibliographic Details
Main Author: Ho, Shuh Huey
Other Authors: Supri, A. Ghani, Assoc. Prof. Dr.
Format: Thesis
Language:English
Published: Universiti Malaysia Perlis (UniMAP) 2017
Subjects:
Composite materials
Ethylene
Thermoplastics
Elastomers
Fillers (Materials)
Vinyl acetate
Online Access:http://dspace.unimap.edu.my:80/xmlui/handle/123456789/78032
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spelling my.unimap-780322023-03-07T01:43:00Z The effect of compatibilizer and coupling agent on properties and characterization of ethylene vinyl acetate / natural rubber / potash feldspar composites Ho, Shuh Huey Supri, A. Ghani, Assoc. Prof. Dr. Composite materials Ethylene Thermoplastics Elastomers Fillers (Materials) Vinyl acetate Doctor of Philosophy in Materials Engineering The composites of ethylene vinyl acetate/ natural rubber/ potash feldspar (EVA/NR/PF) were studied. The composites were prepared by using Brabender Plasticoder at 160°C with 50rpm of the rotor speed. The effect of PF loading, various types of compatibilizers, and coupling agents on mechanical properties, swelling behaviour, morphology properties, thermal properties, spectroscopy infrared, and XRD characterization of the composites were investigated. In this study, 70 phr of ethylene vinyl acetate and 30 phr of natural rubber were used as the polymer matrix. Meanwhile, potash feldspar with 5, 10, 15, 20, and 25 phr was used as filler. Polyethylene-graftedmaleic anhydride (PE-g-MAH), the combinations of isophthalic acid and maleic anhydride (IAMA), ethylene vinyl acetate- grafted- phthalic anhydride (EVA-g-PAH), and ethylene vinyl acetate- grafted- benzyl urea (EVA-g-BU) were used as compatibilizer while silane coupling agent and glycolic acid- maleic anhydride (GAMA) were used to modify the surface of PF. The addition of PF into EVA/NR composites has reduced the tensile strength, elongation at break, percentage mass swell, and interparticle spacing but improved modulus at 100% elongation (M100) and percentage of crytallinity. The tensile fractured surface morphology had illustrated agglomerations of PF at higher PF loading. At higher PF loading, the thermal stability of the composites was found higher as temperature of decomposition and residual were higher at higher PF loading. The compatibilized composites with PE-g-MAH, IAMA, EVA-g-PAH, and EVA-g-BU showed an average of 3.19%, 4.72%, 11.24%, and 21.39% respectively higher in tensile strength; 5.52%,23.69%, 38.49%, 21.25% respectively higher in M100 than EVA/NR/PF composites. However, 3.97%, 5.51%, 6.24%, and 3.02% lower in elongation at break and 8.10%, 3.18%, 3.37%, and 3.66% lower in mass swell percentage had been reported in PE-g-MAH, IAMA, EVA-g-PAH, and EVA-g- BU compatibilized composites respectively compared to EVA/NR/PF composites. Besides, the compatibilized composites presented higher thermal stability but lower percentage of crystallinity, and interparticle spacing compared to EVA/NR/PF composites. PF was treated with silane coupling agents and GA-MA in ethanol. The increment of an average of 10.78% and 13.66% in tensile strength and 77.79% and 14.68%, in M100 were reported in EVA/NR/PFSilane and EVA/NR/PFGA-MA composites respectively while the elongation at break and mass swell were decreased for the composites. EVA/NR/PFSilane and EVA/NR/PFGA-MA composites exhibited lower percentage of crystallinity and interparticle spacing but higher thermal stability in comparison to EVA/NR/PF composites. The SEM morphology for all the compatibilized and treated composites exhibited rough surface and indicated that the interfacial adhesion had been improved. 2017 2023-03-07T01:43:00Z 2023-03-07T01:43:00Z Thesis http://dspace.unimap.edu.my:80/xmlui/handle/123456789/78032 en Universiti Malaysia Perlis (UniMAP) Universiti Malaysia Perlis (UniMAP) School of Materials Engineering
institution Universiti Malaysia Perlis
building UniMAP Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Perlis
content_source UniMAP Library Digital Repository
url_provider http://dspace.unimap.edu.my/
language English
topic Composite materials
Ethylene
Thermoplastics
Elastomers
Fillers (Materials)
Vinyl acetate
spellingShingle Composite materials
Ethylene
Thermoplastics
Elastomers
Fillers (Materials)
Vinyl acetate
Ho, Shuh Huey
The effect of compatibilizer and coupling agent on properties and characterization of ethylene vinyl acetate / natural rubber / potash feldspar composites
description Doctor of Philosophy in Materials Engineering
author2 Supri, A. Ghani, Assoc. Prof. Dr.
author_facet Supri, A. Ghani, Assoc. Prof. Dr.
Ho, Shuh Huey
format Thesis
author Ho, Shuh Huey
author_sort Ho, Shuh Huey
title The effect of compatibilizer and coupling agent on properties and characterization of ethylene vinyl acetate / natural rubber / potash feldspar composites
title_short The effect of compatibilizer and coupling agent on properties and characterization of ethylene vinyl acetate / natural rubber / potash feldspar composites
title_full The effect of compatibilizer and coupling agent on properties and characterization of ethylene vinyl acetate / natural rubber / potash feldspar composites
title_fullStr The effect of compatibilizer and coupling agent on properties and characterization of ethylene vinyl acetate / natural rubber / potash feldspar composites
title_full_unstemmed The effect of compatibilizer and coupling agent on properties and characterization of ethylene vinyl acetate / natural rubber / potash feldspar composites
title_sort effect of compatibilizer and coupling agent on properties and characterization of ethylene vinyl acetate / natural rubber / potash feldspar composites
publisher Universiti Malaysia Perlis (UniMAP)
publishDate 2017
url http://dspace.unimap.edu.my:80/xmlui/handle/123456789/78032
_version_ 1772813091661152256
score 13.211869

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