Conductivity, thermal behaviour and ftir studies on different modified natural rubbers / Nur Atiqah Hamidun

Epoxidized natural rubbers (ENR-25 and ENR-50), methylated grafted natural rubbers (MG-30 and MG-49) and deproteinized natural rubber (DPNR) doped with 0 - 30 wt % of LiClO4 were prepared by solution casting technique. Thermal stability ( d T ) and glass transition temperature ( g T ) of all the...

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Main Author:	Hamidun, Nur Atiqah
Format:	Student Project
Language:	English
Published:	Faculty of Applied Sciences 2009
Subjects:	QD Chemistry
Online Access:	http://ir.uitm.edu.my/id/eprint/765/ http://ir.uitm.edu.my/id/eprint/765/1/PPb_NUR%20ATIQAH%20HAMIDUN%20AS%2009_5.pdf

id	uitm-765
recordtype	eprints
spelling	uitm-7652018-10-24T00:45:38Z http://ir.uitm.edu.my/id/eprint/765/ Conductivity, thermal behaviour and ftir studies on different modified natural rubbers / Nur Atiqah Hamidun Hamidun, Nur Atiqah QD Chemistry Epoxidized natural rubbers (ENR-25 and ENR-50), methylated grafted natural rubbers (MG-30 and MG-49) and deproteinized natural rubber (DPNR) doped with 0 - 30 wt % of LiClO4 were prepared by solution casting technique. Thermal stability ( d T ) and glass transition temperature ( g T ) of all the rubber samples were investigated by Thermogravimetric Analysis (TGA) and Differential Scanning Calorimetry (DSC), respectively. Quantities d T show that ENR-25 and ENR-50 are thermally more stable than that of DPNR, MG-30 and MG-49. The Tg values of all the rubber samples show no significant variation with ascending salt content after 5 wt % of LiClO4 added. Ionic conductivity ( studied by impedance spectroscopy show that MG-49 and ENR-25 exhibit higher  values of 8.810-8 and 9.510-8 S cm-1 than MG-30 and ENR-50, respectively. ATR-FTIR was applied to examine the ion-dipole interactions between the LiClO4 salt and the rubber samples. It is observed that the Li+ ions preferentially coordinated to the epoxy oxygen of the ENR. For MG-30 and MG-49, the Li+ ions are mainly coordinated to the C-O and the C=O of the ester groups. Faculty of Applied Sciences 2009 Student Project NonPeerReviewed text en http://ir.uitm.edu.my/id/eprint/765/1/PPb_NUR%20ATIQAH%20HAMIDUN%20AS%2009_5.pdf Hamidun, Nur Atiqah (2009) Conductivity, thermal behaviour and ftir studies on different modified natural rubbers / Nur Atiqah Hamidun. [Student Project] (Unpublished)
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Teknologi MARA
building	UiTM Institutional Repository
collection	Online Access
language	English
topic	QD Chemistry
spellingShingle	QD Chemistry Hamidun, Nur Atiqah Conductivity, thermal behaviour and ftir studies on different modified natural rubbers / Nur Atiqah Hamidun
description	Epoxidized natural rubbers (ENR-25 and ENR-50), methylated grafted natural rubbers (MG-30 and MG-49) and deproteinized natural rubber (DPNR) doped with 0 - 30 wt % of LiClO4 were prepared by solution casting technique. Thermal stability ( d T ) and glass transition temperature ( g T ) of all the rubber samples were investigated by Thermogravimetric Analysis (TGA) and Differential Scanning Calorimetry (DSC), respectively. Quantities d T show that ENR-25 and ENR-50 are thermally more stable than that of DPNR, MG-30 and MG-49. The Tg values of all the rubber samples show no significant variation with ascending salt content after 5 wt % of LiClO4 added. Ionic conductivity ( studied by impedance spectroscopy show that MG-49 and ENR-25 exhibit higher  values of 8.810-8 and 9.510-8 S cm-1 than MG-30 and ENR-50, respectively. ATR-FTIR was applied to examine the ion-dipole interactions between the LiClO4 salt and the rubber samples. It is observed that the Li+ ions preferentially coordinated to the epoxy oxygen of the ENR. For MG-30 and MG-49, the Li+ ions are mainly coordinated to the C-O and the C=O of the ester groups.
format	Student Project
author	Hamidun, Nur Atiqah
author_facet	Hamidun, Nur Atiqah
author_sort	Hamidun, Nur Atiqah
title	Conductivity, thermal behaviour and ftir studies on different modified natural rubbers / Nur Atiqah Hamidun
title_short	Conductivity, thermal behaviour and ftir studies on different modified natural rubbers / Nur Atiqah Hamidun
title_full	Conductivity, thermal behaviour and ftir studies on different modified natural rubbers / Nur Atiqah Hamidun
title_fullStr	Conductivity, thermal behaviour and ftir studies on different modified natural rubbers / Nur Atiqah Hamidun
title_full_unstemmed	Conductivity, thermal behaviour and ftir studies on different modified natural rubbers / Nur Atiqah Hamidun
title_sort	conductivity, thermal behaviour and ftir studies on different modified natural rubbers / nur atiqah hamidun
publisher	Faculty of Applied Sciences
publishDate	2009
url	http://ir.uitm.edu.my/id/eprint/765/ http://ir.uitm.edu.my/id/eprint/765/1/PPb_NUR%20ATIQAH%20HAMIDUN%20AS%2009_5.pdf
first_indexed	2023-09-18T22:45:00Z
last_indexed	2023-09-18T22:45:00Z
_version_	1777417165902708736

Conductivity, thermal behaviour and ftir studies on different modified natural rubbers / Nur Atiqah Hamidun

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