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The durability of modified silica/polypropylene nanocomposites : weathering resistance and creep behavior

Master of Science (Material Engineering)

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Bibliographic Details
Main Author: Anis Sofiah, Mudzafar Kamil
Other Authors: Ong Hui Lin, Dr.
Format: Thesis
Language:English
Published: Universiti Malaysia Perlis (UniMAP) 2014
Subjects:
Composite materials
Modified silica (SiO2)
Polypropylene (PP)
Nanocomposites
Online Access:http://dspace.unimap.edu.my:80/xmlui/handle/123456789/72263
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spelling my.unimap-722632021-09-30T00:58:26Z The durability of modified silica/polypropylene nanocomposites : weathering resistance and creep behavior Anis Sofiah, Mudzafar Kamil Ong Hui Lin, Dr. Composite materials Modified silica (SiO2) Polypropylene (PP) Nanocomposites Master of Science (Material Engineering) 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, PP-POSS 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. 2014 2021-09-30T00:58:26Z 2021-09-30T00:58:26Z Thesis http://dspace.unimap.edu.my:80/xmlui/handle/123456789/72263 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
Modified silica (SiO2)
Polypropylene (PP)
Nanocomposites
spellingShingle Composite materials
Modified silica (SiO2)
Polypropylene (PP)
Nanocomposites
Anis Sofiah, Mudzafar Kamil
The durability of modified silica/polypropylene nanocomposites : weathering resistance and creep behavior
description Master of Science (Material Engineering)
author2 Ong Hui Lin, Dr.
author_facet Ong Hui Lin, Dr.
Anis Sofiah, Mudzafar Kamil
format Thesis
author 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
publisher Universiti Malaysia Perlis (UniMAP)
publishDate 2014
url http://dspace.unimap.edu.my:80/xmlui/handle/123456789/72263
_version_ 1724609872513728512
score 13.222552

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