Characterization of irradiation modification of ethylene vinyl acetate/ epoxidized natural rubber/ halloysite nanotubes nanocomposites

Ethylene vinyl acetate (EVA)/ Epoxidised natural rubber (ENR50)/ Halloysite nanotubes (HNTs) nanocomposite were prepared using twin screw extruder at temperature profile of 120-150°C and rotor speed of 70 rpm. The compounds were injection molded to produce test specimens and exposed to electron beam...

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Main Author:	Kamal Rudin, Amirah
Format:	Thesis
Language:	English
Published:	2014
Subjects:	TJ Mechanical engineering and machinery
Online Access:	http://eprints.utm.my/id/eprint/51418/25/AmirahKamalRudinMFKM2014.pdf
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spelling	my-utm-ep.514182020-07-14T01:39:06Z Characterization of irradiation modification of ethylene vinyl acetate/ epoxidized natural rubber/ halloysite nanotubes nanocomposites 2014-10 Kamal Rudin, Amirah TJ Mechanical engineering and machinery Ethylene vinyl acetate (EVA)/ Epoxidised natural rubber (ENR50)/ Halloysite nanotubes (HNTs) nanocomposite were prepared using twin screw extruder at temperature profile of 120-150°C and rotor speed of 70 rpm. The compounds were injection molded to produce test specimens and exposed to electron beam (EB) radiation at 50-200 kGy dose range to induce crosslinking. EB radiation was perform under the acceleration energy, beam current, and dose rate of 2MeV, 2 mA, and 20kGy/pass, respectively. The effects of HNTs loading on the tensile, gel content, thermal and morphological properties of the EVA/ENR50/HNT nanocomposite were investigated before and after irradiation. The effects of crosslinking agents, N, N-mphenylenedimaleimide (HVA-2) and trimethylolpropane triacrylate (TMPTA) on nanocomposites were also examined. Prior to irradiation, no significant changes in tensile properties of the EVA/ENR50/HNT nanocomposite were observed upon addition of HNT. However, at 4 php HNT content, a good dispersion of HNT in EVA/ENR50 matrix was observed while agglomeration found to occur at 8 php HNT content. The thermal stability of the EVA/ENR50/HNT nanocomposite was increased as the HNT content increased. Upon irradiation, the gel content, tensile strength and thermal properties of the EVA/ENR50/HNT nanocomposites were increased with the increase of HNT content and irradiation dose due to the formation radiation induced crosslinking. The tensile strength of the EVA/ENR50/4HNT nanocomposites was improved with the addition of TMPTA and HVA-2 due to crosslinking. It can be proven from Scanning Electron Micrographs that the compatibility of EVA/ENR50/4HNT nanocomposites improved upon irradiation. The incorporation of HVA-2 and TMPTA found to play major role in EVA/ENR50/4HNT nanocomposite compatibilization upon irradiation. 2014-10 Thesis http://eprints.utm.my/id/eprint/51418/ http://eprints.utm.my/id/eprint/51418/25/AmirahKamalRudinMFKM2014.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:86359 masters Universiti Teknologi Malaysia, Faculty of Mechanical Engineering Faculty of Mechanical Engineering
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	TJ Mechanical engineering and machinery
spellingShingle	TJ Mechanical engineering and machinery Kamal Rudin, Amirah Characterization of irradiation modification of ethylene vinyl acetate/ epoxidized natural rubber/ halloysite nanotubes nanocomposites
description	Ethylene vinyl acetate (EVA)/ Epoxidised natural rubber (ENR50)/ Halloysite nanotubes (HNTs) nanocomposite were prepared using twin screw extruder at temperature profile of 120-150°C and rotor speed of 70 rpm. The compounds were injection molded to produce test specimens and exposed to electron beam (EB) radiation at 50-200 kGy dose range to induce crosslinking. EB radiation was perform under the acceleration energy, beam current, and dose rate of 2MeV, 2 mA, and 20kGy/pass, respectively. The effects of HNTs loading on the tensile, gel content, thermal and morphological properties of the EVA/ENR50/HNT nanocomposite were investigated before and after irradiation. The effects of crosslinking agents, N, N-mphenylenedimaleimide (HVA-2) and trimethylolpropane triacrylate (TMPTA) on nanocomposites were also examined. Prior to irradiation, no significant changes in tensile properties of the EVA/ENR50/HNT nanocomposite were observed upon addition of HNT. However, at 4 php HNT content, a good dispersion of HNT in EVA/ENR50 matrix was observed while agglomeration found to occur at 8 php HNT content. The thermal stability of the EVA/ENR50/HNT nanocomposite was increased as the HNT content increased. Upon irradiation, the gel content, tensile strength and thermal properties of the EVA/ENR50/HNT nanocomposites were increased with the increase of HNT content and irradiation dose due to the formation radiation induced crosslinking. The tensile strength of the EVA/ENR50/4HNT nanocomposites was improved with the addition of TMPTA and HVA-2 due to crosslinking. It can be proven from Scanning Electron Micrographs that the compatibility of EVA/ENR50/4HNT nanocomposites improved upon irradiation. The incorporation of HVA-2 and TMPTA found to play major role in EVA/ENR50/4HNT nanocomposite compatibilization upon irradiation.
format	Thesis
qualification_level	Master's degree
author	Kamal Rudin, Amirah
author_facet	Kamal Rudin, Amirah
author_sort	Kamal Rudin, Amirah
title	Characterization of irradiation modification of ethylene vinyl acetate/ epoxidized natural rubber/ halloysite nanotubes nanocomposites
title_short	Characterization of irradiation modification of ethylene vinyl acetate/ epoxidized natural rubber/ halloysite nanotubes nanocomposites
title_full	Characterization of irradiation modification of ethylene vinyl acetate/ epoxidized natural rubber/ halloysite nanotubes nanocomposites
title_fullStr	Characterization of irradiation modification of ethylene vinyl acetate/ epoxidized natural rubber/ halloysite nanotubes nanocomposites
title_full_unstemmed	Characterization of irradiation modification of ethylene vinyl acetate/ epoxidized natural rubber/ halloysite nanotubes nanocomposites
title_sort	characterization of irradiation modification of ethylene vinyl acetate/ epoxidized natural rubber/ halloysite nanotubes nanocomposites
granting_institution	Universiti Teknologi Malaysia, Faculty of Mechanical Engineering
granting_department	Faculty of Mechanical Engineering
publishDate	2014
url	http://eprints.utm.my/id/eprint/51418/25/AmirahKamalRudinMFKM2014.pdf
_version_	1747817550595489792

Characterization of irradiation modification of ethylene vinyl acetate/ epoxidized natural rubber/ halloysite nanotubes nanocomposites

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