The fabrication and characterization of thermoplastic natural rubber (TPNR) nanocomposites reinforced carbon nanotubes (CNTs): the effect of surface treatments on CNTs, mechanical and electrical properties of the nanocomposites / Haida Hazreena Hairuddin

Natural rubber/Polyamide 11 (TPNR) nanocomposite were prepared by incorporation of treated and untreated multi-wall carbon nanotubes (MWCNTs) at different loadings (1, 3, 5 and 7 wt.%). TPNR nanocomposites were prepared via melt blending method by using internal mixer at 200°C, 70 rpm mixing speed a...

Full description

Saved in:

Bibliographic Details
Main Author:	Hairuddin, Haida Hazreena Hairuddin
Format:	Thesis
Language:	English
Published:	2013
Subjects:	Organic chemistry Nanocomposites
Online Access:	https://ir.uitm.edu.my/id/eprint/20431/1/TM_HAIDA%20HAZREENA%20HAIRUDDIN%20AS%2013_5.pdf
Tags:	Add Tag No Tags, Be the first to tag this record!

id	my-uitm-ir.20431
record_format	uketd_dc
spelling	my-uitm-ir.204312018-05-15T07:30:13Z The fabrication and characterization of thermoplastic natural rubber (TPNR) nanocomposites reinforced carbon nanotubes (CNTs): the effect of surface treatments on CNTs, mechanical and electrical properties of the nanocomposites / Haida Hazreena Hairuddin 2013 Hairuddin, Haida Hazreena Hairuddin Organic chemistry Nanocomposites Natural rubber/Polyamide 11 (TPNR) nanocomposite were prepared by incorporation of treated and untreated multi-wall carbon nanotubes (MWCNTs) at different loadings (1, 3, 5 and 7 wt.%). TPNR nanocomposites were prepared via melt blending method by using internal mixer at 200°C, 70 rpm mixing speed and 12 minutes processing time for volume ratio 50:10:40 of polyamide 11 (PA), liquid natural rubber (LNR) and natural rubber (NR) respectively. From FTIR patterns, the existing of some other peaks for heat treated and hydrogen peroxide treated MWCNTs were observed. These results show that the heat treatment and hydrogen peroxide treatment lead to the attachment of hydroxyl and carbonyl groups on the surface of MWCNTs. The optimum tensile strength for TPNR reinforced with untreated MWCNTs was achieved at lwt.% nanotubes loading. The highest tensile strength value was about 11.27 MPa that achieved by lwt.% untreated MWCNTs composite compared to TPNR (8.9 MPa). The tensile strength value for TPNR/heat treated MWCNTs composite were much higher for all nano tubes composition compared to untreated MWCNTs composite. The tensile strength for hydrogen peroxide treated MWCNTs nanocomposites is very low even lower than untreated MWCNTs nanocomposites. This trend happened for all the filler compositions. The tensile modulus for TPNR with untreated, heat treated and hydrogen peroxide treated MWCNTs kept on increased until 1 wt.% MWCNTs content only and start to decrease by further addition of nanotubes. The impact strength and elongation at break reduced by increasing filler content for all nanocomposites. The magnitude of conductivity increased with increasing nanotube content. The increasing of nanotubes content will lead to an increase in conductive network among nanofillers as well as the space between the nanotubes, thus, the conductivity of the nanocomposites increased. FESEM image of TPNR with heat treated MWCNTs shows that MWCNTs are well dispersed as compared- to untreated and hydrogen peroxide treated MWCNTs nanocomposites but at higher filler loading (> 7 wt.%), big agglomeration of nanotubes start to occur thus reduced the properties of the composites. 2013 Thesis https://ir.uitm.edu.my/id/eprint/20431/ https://ir.uitm.edu.my/id/eprint/20431/1/TM_HAIDA%20HAZREENA%20HAIRUDDIN%20AS%2013_5.pdf text en public mphil masters Universiti Teknologi MARA Faculty of Applied Sciences
institution	Universiti Teknologi MARA
collection	UiTM Institutional Repository
language	English
topic	Organic chemistry Nanocomposites
spellingShingle	Organic chemistry Nanocomposites Hairuddin, Haida Hazreena Hairuddin The fabrication and characterization of thermoplastic natural rubber (TPNR) nanocomposites reinforced carbon nanotubes (CNTs): the effect of surface treatments on CNTs, mechanical and electrical properties of the nanocomposites / Haida Hazreena Hairuddin
description	Natural rubber/Polyamide 11 (TPNR) nanocomposite were prepared by incorporation of treated and untreated multi-wall carbon nanotubes (MWCNTs) at different loadings (1, 3, 5 and 7 wt.%). TPNR nanocomposites were prepared via melt blending method by using internal mixer at 200°C, 70 rpm mixing speed and 12 minutes processing time for volume ratio 50:10:40 of polyamide 11 (PA), liquid natural rubber (LNR) and natural rubber (NR) respectively. From FTIR patterns, the existing of some other peaks for heat treated and hydrogen peroxide treated MWCNTs were observed. These results show that the heat treatment and hydrogen peroxide treatment lead to the attachment of hydroxyl and carbonyl groups on the surface of MWCNTs. The optimum tensile strength for TPNR reinforced with untreated MWCNTs was achieved at lwt.% nanotubes loading. The highest tensile strength value was about 11.27 MPa that achieved by lwt.% untreated MWCNTs composite compared to TPNR (8.9 MPa). The tensile strength value for TPNR/heat treated MWCNTs composite were much higher for all nano tubes composition compared to untreated MWCNTs composite. The tensile strength for hydrogen peroxide treated MWCNTs nanocomposites is very low even lower than untreated MWCNTs nanocomposites. This trend happened for all the filler compositions. The tensile modulus for TPNR with untreated, heat treated and hydrogen peroxide treated MWCNTs kept on increased until 1 wt.% MWCNTs content only and start to decrease by further addition of nanotubes. The impact strength and elongation at break reduced by increasing filler content for all nanocomposites. The magnitude of conductivity increased with increasing nanotube content. The increasing of nanotubes content will lead to an increase in conductive network among nanofillers as well as the space between the nanotubes, thus, the conductivity of the nanocomposites increased. FESEM image of TPNR with heat treated MWCNTs shows that MWCNTs are well dispersed as compared- to untreated and hydrogen peroxide treated MWCNTs nanocomposites but at higher filler loading (> 7 wt.%), big agglomeration of nanotubes start to occur thus reduced the properties of the composites.
format	Thesis
qualification_name	Master of Philosophy (M.Phil.)
qualification_level	Master's degree
author	Hairuddin, Haida Hazreena Hairuddin
author_facet	Hairuddin, Haida Hazreena Hairuddin
author_sort	Hairuddin, Haida Hazreena Hairuddin
title	The fabrication and characterization of thermoplastic natural rubber (TPNR) nanocomposites reinforced carbon nanotubes (CNTs): the effect of surface treatments on CNTs, mechanical and electrical properties of the nanocomposites / Haida Hazreena Hairuddin
title_short	The fabrication and characterization of thermoplastic natural rubber (TPNR) nanocomposites reinforced carbon nanotubes (CNTs): the effect of surface treatments on CNTs, mechanical and electrical properties of the nanocomposites / Haida Hazreena Hairuddin
title_full	The fabrication and characterization of thermoplastic natural rubber (TPNR) nanocomposites reinforced carbon nanotubes (CNTs): the effect of surface treatments on CNTs, mechanical and electrical properties of the nanocomposites / Haida Hazreena Hairuddin
title_fullStr	The fabrication and characterization of thermoplastic natural rubber (TPNR) nanocomposites reinforced carbon nanotubes (CNTs): the effect of surface treatments on CNTs, mechanical and electrical properties of the nanocomposites / Haida Hazreena Hairuddin
title_full_unstemmed	The fabrication and characterization of thermoplastic natural rubber (TPNR) nanocomposites reinforced carbon nanotubes (CNTs): the effect of surface treatments on CNTs, mechanical and electrical properties of the nanocomposites / Haida Hazreena Hairuddin
title_sort	fabrication and characterization of thermoplastic natural rubber (tpnr) nanocomposites reinforced carbon nanotubes (cnts): the effect of surface treatments on cnts, mechanical and electrical properties of the nanocomposites / haida hazreena hairuddin
granting_institution	Universiti Teknologi MARA
granting_department	Faculty of Applied Sciences
publishDate	2013
url	https://ir.uitm.edu.my/id/eprint/20431/1/TM_HAIDA%20HAZREENA%20HAIRUDDIN%20AS%2013_5.pdf
_version_	1783733730836217856

The fabrication and characterization of thermoplastic natural rubber (TPNR) nanocomposites reinforced carbon nanotubes (CNTs): the effect of surface treatments on CNTs, mechanical and electrical properties of the nanocomposites / Haida Hazreena Hairuddin

Similar Items