Mechanical and thermal properties of Montmorillonite filled newspaper fiber reinforced recycled polyethylene terephthalate nanocomposites

The feasibility of developing a newspaper fiber (NPF) reinforced poly (ethylene terephthalate) nanocomposites containing organically modified montmorillonite (MMT) was investigated. The nanocomposites were prepared using a counter-rotating twin-screw extruder followed by injection molding. The mecha...

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Main Author:	Madadi Ardekani, Sara
Format:	Thesis
Language:	English
Published:	2012
Subjects:	T Technology (General)
Online Access:	http://eprints.utm.my/id/eprint/32268/1/SaraMadadiArdekaniMFKK2012.pdf
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spelling	my-utm-ep.322682017-07-12T08:15:08Z Mechanical and thermal properties of Montmorillonite filled newspaper fiber reinforced recycled polyethylene terephthalate nanocomposites 2012 Madadi Ardekani, Sara T Technology (General) The feasibility of developing a newspaper fiber (NPF) reinforced poly (ethylene terephthalate) nanocomposites containing organically modified montmorillonite (MMT) was investigated. The nanocomposites were prepared using a counter-rotating twin-screw extruder followed by injection molding. The mechanical properties of the nanocomposites were studied through tensile, flexural and impact testing. The thermal characteristics of the composites were evaluated through thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). The morphological behavior of the samples was observed via scanning electron microscopy (SEM). The composites were prepared by using 5 to 15 wt% of NPF as reinforcing elements along with 10 phr of SEBS-g-MA as compatibilizer. The results showed that blending PETr with SEBS-g-MA increased the toughness of the recycled resin and significant improvements in the impact strength of the blend were observed. The incorporation of NPF increased both tensile and flexural moduli of the composites but lowered the impact strength. According to DSC data, the inclusion of NPF increased the degree of crystallinity of the composites, which point to the fact that NPF could act as nucleating agent. The TGA curve revealed that NPF addition lowered the thermal stability of the composites. Micro images taken from the surface of the broken specimen showed poor interfacial adhesion between the fibers and the matrix due to the differences in the hydrophobic\hydrophilic nature of the components. Incorporation of MMT resulted in momentous improvements in both Young’s and flexural moduli of the nanocomposites at the expense of impact strength of the samples. Significant increase observed in the flexural modulus from 2368 MPa to 3484 MPa for composites with 10 wt% of NPF and nanocomposites incorporating 5 phr of nanoclay respectively. The presence of MMT was shown to have influence on the crystallization behavior of the nanocomposites and decreased the onset crystallization temperature as well as melting temperature (Tm). The thermal stability of the nanocomposites showed improvements upon the incorporation of nanoclay. Overall, the properties point to a product with enhanced mechanical properties as compared to PETr with the potential to be used in wood replacement applications. 2012 Thesis http://eprints.utm.my/id/eprint/32268/ http://eprints.utm.my/id/eprint/32268/1/SaraMadadiArdekaniMFKK2012.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository?query=Mechanical+and+thermal+properties+of+Montmorillonite+filled+newspaper+fiber+reinforced+recycled+polyethylene+terephthalate+nanocomposites&queryType=vitalDismax&public=true masters Universiti Teknologi Malaysia, Faculty of Chemical Engineering Faculty of Chemical Engineering
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	T Technology (General)
spellingShingle	T Technology (General) Madadi Ardekani, Sara Mechanical and thermal properties of Montmorillonite filled newspaper fiber reinforced recycled polyethylene terephthalate nanocomposites
description	The feasibility of developing a newspaper fiber (NPF) reinforced poly (ethylene terephthalate) nanocomposites containing organically modified montmorillonite (MMT) was investigated. The nanocomposites were prepared using a counter-rotating twin-screw extruder followed by injection molding. The mechanical properties of the nanocomposites were studied through tensile, flexural and impact testing. The thermal characteristics of the composites were evaluated through thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). The morphological behavior of the samples was observed via scanning electron microscopy (SEM). The composites were prepared by using 5 to 15 wt% of NPF as reinforcing elements along with 10 phr of SEBS-g-MA as compatibilizer. The results showed that blending PETr with SEBS-g-MA increased the toughness of the recycled resin and significant improvements in the impact strength of the blend were observed. The incorporation of NPF increased both tensile and flexural moduli of the composites but lowered the impact strength. According to DSC data, the inclusion of NPF increased the degree of crystallinity of the composites, which point to the fact that NPF could act as nucleating agent. The TGA curve revealed that NPF addition lowered the thermal stability of the composites. Micro images taken from the surface of the broken specimen showed poor interfacial adhesion between the fibers and the matrix due to the differences in the hydrophobic\hydrophilic nature of the components. Incorporation of MMT resulted in momentous improvements in both Young’s and flexural moduli of the nanocomposites at the expense of impact strength of the samples. Significant increase observed in the flexural modulus from 2368 MPa to 3484 MPa for composites with 10 wt% of NPF and nanocomposites incorporating 5 phr of nanoclay respectively. The presence of MMT was shown to have influence on the crystallization behavior of the nanocomposites and decreased the onset crystallization temperature as well as melting temperature (Tm). The thermal stability of the nanocomposites showed improvements upon the incorporation of nanoclay. Overall, the properties point to a product with enhanced mechanical properties as compared to PETr with the potential to be used in wood replacement applications.
format	Thesis
qualification_level	Master's degree
author	Madadi Ardekani, Sara
author_facet	Madadi Ardekani, Sara
author_sort	Madadi Ardekani, Sara
title	Mechanical and thermal properties of Montmorillonite filled newspaper fiber reinforced recycled polyethylene terephthalate nanocomposites
title_short	Mechanical and thermal properties of Montmorillonite filled newspaper fiber reinforced recycled polyethylene terephthalate nanocomposites
title_full	Mechanical and thermal properties of Montmorillonite filled newspaper fiber reinforced recycled polyethylene terephthalate nanocomposites
title_fullStr	Mechanical and thermal properties of Montmorillonite filled newspaper fiber reinforced recycled polyethylene terephthalate nanocomposites
title_full_unstemmed	Mechanical and thermal properties of Montmorillonite filled newspaper fiber reinforced recycled polyethylene terephthalate nanocomposites
title_sort	mechanical and thermal properties of montmorillonite filled newspaper fiber reinforced recycled polyethylene terephthalate nanocomposites
granting_institution	Universiti Teknologi Malaysia, Faculty of Chemical Engineering
granting_department	Faculty of Chemical Engineering
publishDate	2012
url	http://eprints.utm.my/id/eprint/32268/1/SaraMadadiArdekaniMFKK2012.pdf
_version_	1747815961817251840

Mechanical and thermal properties of Montmorillonite filled newspaper fiber reinforced recycled polyethylene terephthalate nanocomposites

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