A linear relationship between the tensile, thermal and gas barrier properties of mape modified rubber toughened nanocomposites

Jamal, Nur Ayuni and Anuar, Hazleen and Abdul Razak, Shamsul Bahri (2010) A linear relationship between the tensile, thermal and gas barrier properties of mape modified rubber toughened nanocomposites. IIUM Engineering Journal, 11 (2). pp. 225-239. ISSN 1511-788X

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Abstract

The nanocomposites with the application of compatibilizer agent were developed aiming to enhance the tensile, crystallization as well as gas barrier properties. Nanocomposites based on high density polyethylene (HDPE), ethylene propylene diene monomer (EPDM) and organophilic montmorillonite (OMMT) clays were prepared via melt compounding followed by compression molding. The addition of clay as well as compatibilizer agent (maleic anhydride polyethylene (MAPE)) considerably improved the tensile properties of nanocomposites systems. The largest improvement in mechanical and thermal properties occurred at clay loading levels of 4% (2-8 wt %) with MAPE system. Interestingly, the increased in tensile properties also resulted in improvement in thermal and gas barrier properties. Based on the optimum finding in tensile test, differential scanning calorimeter analysis (DSC) and gas barrier analysis were evaluated at 4 vol% of OMMT. DSC analysis revealed that the gas barrier property of nanocomposite was influenced by the crystalline percentage of nanocomposite. Along with crystalline percentage, the crystallization temperature, Tc and melting temperature, Tm were also improved with the presence of OMMT and MAPE agent. The d-spacings of the clay in nanocomposites was monitored using x-ray diffraction (XRD) and the extent of delamination was examined by transmission electron microscope (TEM). The wide angle of XRD patterns showed the increased of interplanar spacing, d of clay layers, indicating enhanced compatibility between polymer matrix and OMMT, with the aids of MAPE agent. TEM photomicrographs illustrated the mixed intercalated and partial exfoliated structures of the nanocomposites with OMMT and MAPE agent.

Item Type:	Article (Journal)
Additional Information:	4130/5679
Uncontrolled Keywords:	Organophilic Montmorillonite; Tensile Properties; Thermal Property; Maleic Anhydride Polyethylene; Gas Barrier
Subjects:	T Technology > T Technology (General)
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering Kulliyyah of Engineering > Department of Manufacturing and Materials Engineering
Depositing User:	Dr Hazleen Anuar
Date Deposited:	04 Oct 2011 17:12
Last Modified:	23 Nov 2011 09:22
URI:	http://irep.iium.edu.my/id/eprint/5679

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