Fabrication and characterization of modified multi walled carbon nanotube reinforced unsaturated polyester nanocomposites

Fabrication and characterization of modified multi walled carbon nanotube reinforced unsaturated polyester nanocomposites

This research presents a non-destructive modification of multi-walled carbon nanotube (MWCNT) and fabrication of MWCNT reinforced unsaturated polyester resin (UPR) nanocomposite. In this work, pre-dispersion of MWCNTs was performed in the tetra hydro furan (THF) solvent. In addition, pre-dispersion...

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Main Author: A. K. M., Moshiul Alam
Format: Thesis
Language:English
Published: 2016
Subjects:
Q Science (General)
TP Chemical technology
Online Access:http://umpir.ump.edu.my/id/eprint/15253/19/Fabrication%20and%20characterization%20of%20modified%20multi%20walled%20Carbon%20nanotube%20reinforced%20unsaturated%20polyester%20Nanocomposites.pdf
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spelling my-ump-ir.152532021-11-18T03:53:50Z Fabrication and characterization of modified multi walled carbon nanotube reinforced unsaturated polyester nanocomposites 2016-03 A. K. M., Moshiul Alam Q Science (General) TP Chemical technology This research presents a non-destructive modification of multi-walled carbon nanotube (MWCNT) and fabrication of MWCNT reinforced unsaturated polyester resin (UPR) nanocomposite. In this work, pre-dispersion of MWCNTs was performed in the tetra hydro furan (THF) solvent. In addition, pre-dispersion and post- dispersion time was optimized as 1.5 hour and 2 hour, respectively. The pre-dispersed MWCNT reinforced UPR (THF-MWCNT-UPR) nanocomposite exhibited better properties as compared to directly dispersed MWCNT reinforced UPR (MWCNT-UPR) nanocomposite. The optimum amount of MWCNT was evaluated through mechanical properties of nanocomposites contained 0.05 to 0.5 wt% MWCNT. The experimental tensile modulus (TM) of 0.3 wt% MWCNT reinforced 0.3CNT-UPR nanocomposite linearly fitted with Halpin –Tsai equation. Therefore, 0.3 wt% MWCNT was suggested as the optimum quantity. The nondefect modification of MWCNT was carried out with hyper branched polyester (HBP) and shellac (SL) functional polymers. The structural and thermal properties of 10 wt% HBP and SL coated HBCNT and SLCNT was noticeably improved as compared to pristine MWCNT. Moreover, 10 wt% HBP and SL coated HBCNT and SLCNT nanotubes remarkably reduced the curing temperature of nanosuspensions. Therefore, 10 wt% was considered as the optimum amount of HBP and SL to modify MWCNT. Optimum HBP coated MWCNT incorporated (OHBPCNT-UPR) nanocomposite became stiff. Conversely, optimum SL coated MWCNT incorporated (OSLCNT-UPR) nanocomposite became tough as compared to MWCNT reinforced nanocomposite. Different ratios of HBCNT and hydroxyl (OH) functionalized MWCNT (OHCNT) were incorporated in UPR to fabricate hybrid (HBOHCNT-UPR) nanocomposites. The ratio of HBCNT and OHCNT was optimized as 2:1 through the curing behavior of hybrid nanosuspensions. The comparative study was carried out among non-covalent and covalent functionalized as well as hybrid MWCNT reinforced UPR nanocomposites. Hybrid MWCNT incorporated nanosuspension exhibited the lowest curing temperature as compared to non-covalent and covalent functionalized MWCNT incorporated nanosuspensions. The hybrid nanocomposite exhibited the highest stiffness among nanocomposites which was individually fabricated with HBCNT and OHCNT. The mixture of non-covalent functionalized and covalent functionalized MWCNT jointly reinforced the properties of UPR. 2016-03 Thesis http://umpir.ump.edu.my/id/eprint/15253/ http://umpir.ump.edu.my/id/eprint/15253/19/Fabrication%20and%20characterization%20of%20modified%20multi%20walled%20Carbon%20nanotube%20reinforced%20unsaturated%20polyester%20Nanocomposites.pdf pdf en public phd doctoral Universiti Malaysia Pahang Faculty of Chemical & Natural Resources Engineering
institution Universiti Malaysia Pahang Al-Sultan Abdullah
collection UMPSA Institutional Repository
language English
topic Q Science (General)
TP Chemical technology
spellingShingle Q Science (General)
TP Chemical technology
A. K. M., Moshiul Alam
Fabrication and characterization of modified multi walled carbon nanotube reinforced unsaturated polyester nanocomposites
description This research presents a non-destructive modification of multi-walled carbon nanotube (MWCNT) and fabrication of MWCNT reinforced unsaturated polyester resin (UPR) nanocomposite. In this work, pre-dispersion of MWCNTs was performed in the tetra hydro furan (THF) solvent. In addition, pre-dispersion and post- dispersion time was optimized as 1.5 hour and 2 hour, respectively. The pre-dispersed MWCNT reinforced UPR (THF-MWCNT-UPR) nanocomposite exhibited better properties as compared to directly dispersed MWCNT reinforced UPR (MWCNT-UPR) nanocomposite. The optimum amount of MWCNT was evaluated through mechanical properties of nanocomposites contained 0.05 to 0.5 wt% MWCNT. The experimental tensile modulus (TM) of 0.3 wt% MWCNT reinforced 0.3CNT-UPR nanocomposite linearly fitted with Halpin –Tsai equation. Therefore, 0.3 wt% MWCNT was suggested as the optimum quantity. The nondefect modification of MWCNT was carried out with hyper branched polyester (HBP) and shellac (SL) functional polymers. The structural and thermal properties of 10 wt% HBP and SL coated HBCNT and SLCNT was noticeably improved as compared to pristine MWCNT. Moreover, 10 wt% HBP and SL coated HBCNT and SLCNT nanotubes remarkably reduced the curing temperature of nanosuspensions. Therefore, 10 wt% was considered as the optimum amount of HBP and SL to modify MWCNT. Optimum HBP coated MWCNT incorporated (OHBPCNT-UPR) nanocomposite became stiff. Conversely, optimum SL coated MWCNT incorporated (OSLCNT-UPR) nanocomposite became tough as compared to MWCNT reinforced nanocomposite. Different ratios of HBCNT and hydroxyl (OH) functionalized MWCNT (OHCNT) were incorporated in UPR to fabricate hybrid (HBOHCNT-UPR) nanocomposites. The ratio of HBCNT and OHCNT was optimized as 2:1 through the curing behavior of hybrid nanosuspensions. The comparative study was carried out among non-covalent and covalent functionalized as well as hybrid MWCNT reinforced UPR nanocomposites. Hybrid MWCNT incorporated nanosuspension exhibited the lowest curing temperature as compared to non-covalent and covalent functionalized MWCNT incorporated nanosuspensions. The hybrid nanocomposite exhibited the highest stiffness among nanocomposites which was individually fabricated with HBCNT and OHCNT. The mixture of non-covalent functionalized and covalent functionalized MWCNT jointly reinforced the properties of UPR.
format Thesis
qualification_name Doctor of Philosophy (PhD.)
qualification_level Doctorate
author A. K. M., Moshiul Alam
author_facet A. K. M., Moshiul Alam
author_sort A. K. M., Moshiul Alam
title Fabrication and characterization of modified multi walled carbon nanotube reinforced unsaturated polyester nanocomposites
title_short Fabrication and characterization of modified multi walled carbon nanotube reinforced unsaturated polyester nanocomposites
title_full Fabrication and characterization of modified multi walled carbon nanotube reinforced unsaturated polyester nanocomposites
title_fullStr Fabrication and characterization of modified multi walled carbon nanotube reinforced unsaturated polyester nanocomposites
title_full_unstemmed Fabrication and characterization of modified multi walled carbon nanotube reinforced unsaturated polyester nanocomposites
title_sort fabrication and characterization of modified multi walled carbon nanotube reinforced unsaturated polyester nanocomposites
granting_institution Universiti Malaysia Pahang
granting_department Faculty of Chemical & Natural Resources Engineering
publishDate 2016
url http://umpir.ump.edu.my/id/eprint/15253/19/Fabrication%20and%20characterization%20of%20modified%20multi%20walled%20Carbon%20nanotube%20reinforced%20unsaturated%20polyester%20Nanocomposites.pdf
_version_ 1783731995700887552

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