Characterization of mechanical, morphological and thermal properties of low density polyethylene nanocomposite using alumina nano-particles as filler

Nano alumina was produced by using sol-gel method. Alumina was studied by using XRD, FTIR and TEM to confirm the spectroscopy of alumina and size. Ultrasonication was used to disperse the alumina and SDBS was used as surfactant to prevent the re-agglomeration. The processing conditions of LDPE/ alum...

Full description

Saved in:

Bibliographic Details
Main Author:	Ngu, Jenney Lim Song
Format:	Thesis
Language:	English
Published:	2010
Subjects:	Polyethylene Nanoparticles Nanocomposites (Materials)
Online Access:	http://psasir.upm.edu.my/id/eprint/40931/1/FK%202010%2055R.pdf
Tags:	Add Tag No Tags, Be the first to tag this record!

id	my-upm-ir.40931
record_format	uketd_dc
spelling	my-upm-ir.409312015-10-05T08:48:55Z Characterization of mechanical, morphological and thermal properties of low density polyethylene nanocomposite using alumina nano-particles as filler 2010-06 Ngu, Jenney Lim Song Nano alumina was produced by using sol-gel method. Alumina was studied by using XRD, FTIR and TEM to confirm the spectroscopy of alumina and size. Ultrasonication was used to disperse the alumina and SDBS was used as surfactant to prevent the re-agglomeration. The processing conditions of LDPE/ alumina blending were studied. The optimum processing conditions was chosen based on tensile tests. The rotor speed during blending affected the dispersion of alumina in LDPE. The rotor speed 80 rpm gave the most consistent tensile properties, suggesting that the dispersion of alumina was good. Samples of 0.5, 1, 2, 3, and 5 wt% of alumina nanocomposite were prepared. Mechanical, thermal, and morphological properties were characterized. The addition of alumina into LDPE enhanced the tensile properties, i.e., tensile strength (34 - 43%) and Young’s modulus (27 - 57%) of LDPE. The tensile fracture surfaces of the nanocomposites were characterized by SEM and confirmed the tensile results. From the flexural analysis, the presence of alumina has insignificant increment on both flexural strength and flexural modulus. Impact strength for notched izod impact test was decreased at the low percentage of alumina loading. Dynamic mechanical analysis performed shown that Tg increased with the increase of alumina loading and damping value decreased with alumina loading. Thermal stability of the nanocomposites was studied by using TGA and no significant difference in stability was observed. Did not show great different of stability. Lastly, the crystallinity of nanocomposites was investigated with DSC. The crystallinity of nanocomposites decreased with the presence of alumina, because alumina restricts the movement of macromolecular chain in LDPE. Polyethylene Nanoparticles Nanocomposites (Materials) 2010-06 Thesis http://psasir.upm.edu.my/id/eprint/40931/ http://psasir.upm.edu.my/id/eprint/40931/1/FK%202010%2055R.pdf application/pdf en public masters Universiti Putra Malaysia Polyethylene Nanoparticles Nanocomposites (Materials)
institution	Universiti Putra Malaysia
collection	PSAS Institutional Repository
language	English
topic	Polyethylene Nanoparticles Nanocomposites (Materials)
spellingShingle	Polyethylene Nanoparticles Nanocomposites (Materials) Ngu, Jenney Lim Song Characterization of mechanical, morphological and thermal properties of low density polyethylene nanocomposite using alumina nano-particles as filler
description	Nano alumina was produced by using sol-gel method. Alumina was studied by using XRD, FTIR and TEM to confirm the spectroscopy of alumina and size. Ultrasonication was used to disperse the alumina and SDBS was used as surfactant to prevent the re-agglomeration. The processing conditions of LDPE/ alumina blending were studied. The optimum processing conditions was chosen based on tensile tests. The rotor speed during blending affected the dispersion of alumina in LDPE. The rotor speed 80 rpm gave the most consistent tensile properties, suggesting that the dispersion of alumina was good. Samples of 0.5, 1, 2, 3, and 5 wt% of alumina nanocomposite were prepared. Mechanical, thermal, and morphological properties were characterized. The addition of alumina into LDPE enhanced the tensile properties, i.e., tensile strength (34 - 43%) and Young’s modulus (27 - 57%) of LDPE. The tensile fracture surfaces of the nanocomposites were characterized by SEM and confirmed the tensile results. From the flexural analysis, the presence of alumina has insignificant increment on both flexural strength and flexural modulus. Impact strength for notched izod impact test was decreased at the low percentage of alumina loading. Dynamic mechanical analysis performed shown that Tg increased with the increase of alumina loading and damping value decreased with alumina loading. Thermal stability of the nanocomposites was studied by using TGA and no significant difference in stability was observed. Did not show great different of stability. Lastly, the crystallinity of nanocomposites was investigated with DSC. The crystallinity of nanocomposites decreased with the presence of alumina, because alumina restricts the movement of macromolecular chain in LDPE.
format	Thesis
qualification_level	Master's degree
author	Ngu, Jenney Lim Song
author_facet	Ngu, Jenney Lim Song
author_sort	Ngu, Jenney Lim Song
title	Characterization of mechanical, morphological and thermal properties of low density polyethylene nanocomposite using alumina nano-particles as filler
title_short	Characterization of mechanical, morphological and thermal properties of low density polyethylene nanocomposite using alumina nano-particles as filler
title_full	Characterization of mechanical, morphological and thermal properties of low density polyethylene nanocomposite using alumina nano-particles as filler
title_fullStr	Characterization of mechanical, morphological and thermal properties of low density polyethylene nanocomposite using alumina nano-particles as filler
title_full_unstemmed	Characterization of mechanical, morphological and thermal properties of low density polyethylene nanocomposite using alumina nano-particles as filler
title_sort	characterization of mechanical, morphological and thermal properties of low density polyethylene nanocomposite using alumina nano-particles as filler
granting_institution	Universiti Putra Malaysia
publishDate	2010
url	http://psasir.upm.edu.my/id/eprint/40931/1/FK%202010%2055R.pdf
_version_	1747811851057496064

Characterization of mechanical, morphological and thermal properties of low density polyethylene nanocomposite using alumina nano-particles as filler

Similar Items