The durability of modified Silica/Polypropylene nanocomposites: weathering resistance and creep behavior

In this research, the modified silica (SiO2)/polypropylene (PP) nanocomposites were prepared. The accelerated weathering and creep behavior of nanocomposites were investigated. Neat PP with 2 wt% of nanosilica and 3 wt% of modifiers (aminopropyl triethoxysilane (APTES), polypropylene grafted male...

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Main Author:	Anis Sofiah, Mudzafar Kamil
Format:	Thesis
Language:	English
Subjects:	Silica (SiO2)/Polypropylene (PP) Silica (SiO2) Nanocomposites Weather and creep behavior > Analysis Polypropylene (PP) Polymer nanocomposite
Online Access:	http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/59814/1/p.1-24..pdf http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/59814/2/Full%20Text.pdf
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spelling	my-unimap-598142019-05-10T04:00:41Z The durability of modified Silica/Polypropylene nanocomposites: weathering resistance and creep behavior Anis Sofiah, Mudzafar Kamil Dr. Ong Hui Lin In this research, the modified silica (SiO2)/polypropylene (PP) nanocomposites were prepared. The accelerated weathering and creep behavior of nanocomposites were investigated. Neat PP with 2 wt% of nanosilica and 3 wt% of modifiers (aminopropyl triethoxysilane (APTES), polypropylene grafted maleic anhydride (PP-g-MA) and polypropylene-methyl polyhedral oligomeric silsesquixone (PP-POSS)) were melt blended in the internal mixer Brabender with rotor speed 60 rpm for 10 minutes. The nanocomposites characterizations were determined by Fourier transform infrared analysis (FTIR) and field emission scanning electron microscope (FESEM). While the mechanical properties of the nanocomposites were determined using a tensile test instrument according to ASTM D638 and thermal behavior through thermalgravimetric analysis (TGA) and differential scanning calorimetry (DSC), respectively, before and after exposure to accelerated weathering test (AWT). The durability behavior of nanocomposites was tested under creep test instrument according to ASTM D2990. From the FTIR analysis, weathered nanocomposites with the PP-POSS showed less carbonyl group which related to the degradation phenomenon to the material comparing to the nanocomposites with APTES,PP-g-MA and without modifiers. Moreover, FESEM images showed less cracking and deformation on the tensile fractured surface of weathered nanocomposites with PP-POSS validating the efficiency of the modifiers. While, from tensile results, the weathered nanocomposites especially with the presence of PP-POSS followed by PP-g-MA and APTES have higher tensile strength but moderate reduction in elongation at break than the weathered nanocomposites without the modifiers. In the terms of thermal behavior, PPPOSS showed good thermal stability compared to other nanocomposites. While for the durability test, the presence of modifiers in the modified silica/PP nanocomposites exhibited good resistance to the creep. PP-POSS provided better improvement creep resistance compared to the nanocomposites with PP-g-MA, APTES and without modifier. This can be concluded that the addition of modifiers improved the weather resistance and creep resistance of nanocomposites. Universiti Malaysia Perlis (UniMAP) 2014 Thesis en http://dspace.unimap.edu.my:80/xmlui/handle/123456789/59814 http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/59814/1/p.1-24..pdf a02b74a2f4d71604e71b7b6766791ab2 http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/59814/2/Full%20Text.pdf 773a05b5dc78cd003b28b59e5b13e597 http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/59814/3/license.txt 8a4605be74aa9ea9d79846c1fba20a33 Silica (SiO2)/Polypropylene (PP) Silica (SiO2) Nanocomposites Weather and creep behavior -- Analysis Polypropylene (PP) Polymer nanocomposite School of Materials Engineering
institution	Universiti Malaysia Perlis
collection	UniMAP Institutional Repository
language	English
advisor	Dr. Ong Hui Lin
topic	Silica (SiO2)/Polypropylene (PP) Silica (SiO2) Nanocomposites Weather and creep behavior -- Analysis Polypropylene (PP) Polymer nanocomposite
spellingShingle	Silica (SiO2)/Polypropylene (PP) Silica (SiO2) Nanocomposites Weather and creep behavior -- Analysis Polypropylene (PP) Polymer nanocomposite Anis Sofiah, Mudzafar Kamil The durability of modified Silica/Polypropylene nanocomposites: weathering resistance and creep behavior
description	In this research, the modified silica (SiO2)/polypropylene (PP) nanocomposites were prepared. The accelerated weathering and creep behavior of nanocomposites were investigated. Neat PP with 2 wt% of nanosilica and 3 wt% of modifiers (aminopropyl triethoxysilane (APTES), polypropylene grafted maleic anhydride (PP-g-MA) and polypropylene-methyl polyhedral oligomeric silsesquixone (PP-POSS)) were melt blended in the internal mixer Brabender with rotor speed 60 rpm for 10 minutes. The nanocomposites characterizations were determined by Fourier transform infrared analysis (FTIR) and field emission scanning electron microscope (FESEM). While the mechanical properties of the nanocomposites were determined using a tensile test instrument according to ASTM D638 and thermal behavior through thermalgravimetric analysis (TGA) and differential scanning calorimetry (DSC), respectively, before and after exposure to accelerated weathering test (AWT). The durability behavior of nanocomposites was tested under creep test instrument according to ASTM D2990. From the FTIR analysis, weathered nanocomposites with the PP-POSS showed less carbonyl group which related to the degradation phenomenon to the material comparing to the nanocomposites with APTES,PP-g-MA and without modifiers. Moreover, FESEM images showed less cracking and deformation on the tensile fractured surface of weathered nanocomposites with PP-POSS validating the efficiency of the modifiers. While, from tensile results, the weathered nanocomposites especially with the presence of PP-POSS followed by PP-g-MA and APTES have higher tensile strength but moderate reduction in elongation at break than the weathered nanocomposites without the modifiers. In the terms of thermal behavior, PPPOSS showed good thermal stability compared to other nanocomposites. While for the durability test, the presence of modifiers in the modified silica/PP nanocomposites exhibited good resistance to the creep. PP-POSS provided better improvement creep resistance compared to the nanocomposites with PP-g-MA, APTES and without modifier. This can be concluded that the addition of modifiers improved the weather resistance and creep resistance of nanocomposites.
format	Thesis
author	Anis Sofiah, Mudzafar Kamil
author_facet	Anis Sofiah, Mudzafar Kamil
author_sort	Anis Sofiah, Mudzafar Kamil
title	The durability of modified Silica/Polypropylene nanocomposites: weathering resistance and creep behavior
title_short	The durability of modified Silica/Polypropylene nanocomposites: weathering resistance and creep behavior
title_full	The durability of modified Silica/Polypropylene nanocomposites: weathering resistance and creep behavior
title_fullStr	The durability of modified Silica/Polypropylene nanocomposites: weathering resistance and creep behavior
title_full_unstemmed	The durability of modified Silica/Polypropylene nanocomposites: weathering resistance and creep behavior
title_sort	durability of modified silica/polypropylene nanocomposites: weathering resistance and creep behavior
granting_institution	Universiti Malaysia Perlis (UniMAP)
granting_department	School of Materials Engineering
url	http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/59814/1/p.1-24..pdf http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/59814/2/Full%20Text.pdf
_version_	1747836838909837312

The durability of modified Silica/Polypropylene nanocomposites: weathering resistance and creep behavior

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