Properties for the thermodynamic control of the complexation of inorganic salt to the modified natural rubber / Assoc. Prof. Dr. Sim Lai Har … [et al.]

Solid polymer electrolytes comprise of epoxidized natural rubber (ENR) and methylgrafted natural rubber (MG) as polymer hosts added with LiCI04 were prepared by solution casting technique. Glass transition temperature (Tg) obtained by using differential scanning calorimetry (DSC) and the ionic condu...

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Main Authors:	Sim, Lai Har, Chan, Chin Han, Kammer, Hans-Werner, Mohd Yusof, Siti Nor Hafiza
Format:	Research Reports
Language:	English
Published:	Research Management Institute (RMI) 2013
Subjects:	Inorganic chemistry
Online Access:	http://ir.uitm.edu.my/id/eprint/23726/ http://ir.uitm.edu.my/id/eprint/23726/1/LP_SIM%20LAI%20HAR%20RMI%2013_5.pdf

id	uitm-23726
recordtype	eprints
spelling	uitm-237262019-04-05T03:15:21Z http://ir.uitm.edu.my/id/eprint/23726/ Properties for the thermodynamic control of the complexation of inorganic salt to the modified natural rubber / Assoc. Prof. Dr. Sim Lai Har … [et al.] Sim, Lai Har Chan, Chin Han Kammer, Hans-Werner Mohd Yusof, Siti Nor Hafiza Inorganic chemistry Solid polymer electrolytes comprise of epoxidized natural rubber (ENR) and methylgrafted natural rubber (MG) as polymer hosts added with LiCI04 were prepared by solution casting technique. Glass transition temperature (Tg) obtained by using differential scanning calorimetry (DSC) and the ionic conductivity evaluated from bulk resistance (Rb) determined using the impedance spectroscopy point towards the higher solubility of the lithium salt in MG rubber. Moreover, two 7gs are observed for the MG-salt electrolyte system whereas only one 7g is obtained for the ENR-salt system at all salt concentrations. The carboxyl group of the MG is found to have a better solvation capability than the oxirane group of ENR. Ionic conductivities {a) and dielectric constants (^) are observed to increase with ascending salt content. However, restricted segmental motion due to the higher degree of Li+ ion coordination to the polar epoxy oxygen of the ENR-50 leads to lower ionic conductivity as compared to ENR-25 and dependency of d on salt concentration is more pronounced at low frequencies from 50 to approximately 1.0 x 104 Hz. A power law dependence of ionic conductivity on salt concentration is also observed in which the lower charge carrier mobility in ENR as compared to MG is in good agreement with its lower conductivity. Research Management Institute (RMI) 2013 Research Reports NonPeerReviewed text en http://ir.uitm.edu.my/id/eprint/23726/1/LP_SIM%20LAI%20HAR%20RMI%2013_5.pdf Sim, Lai Har and Chan, Chin Han and Kammer, Hans-Werner and Mohd Yusof, Siti Nor Hafiza (2013) Properties for the thermodynamic control of the complexation of inorganic salt to the modified natural rubber / Assoc. Prof. Dr. Sim Lai Har … [et al.]. [Research Reports] (Unpublished)
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Teknologi MARA
building	UiTM Institutional Repository
collection	Online Access
language	English
topic	Inorganic chemistry
spellingShingle	Inorganic chemistry Sim, Lai Har Chan, Chin Han Kammer, Hans-Werner Mohd Yusof, Siti Nor Hafiza Properties for the thermodynamic control of the complexation of inorganic salt to the modified natural rubber / Assoc. Prof. Dr. Sim Lai Har … [et al.]
description	Solid polymer electrolytes comprise of epoxidized natural rubber (ENR) and methylgrafted natural rubber (MG) as polymer hosts added with LiCI04 were prepared by solution casting technique. Glass transition temperature (Tg) obtained by using differential scanning calorimetry (DSC) and the ionic conductivity evaluated from bulk resistance (Rb) determined using the impedance spectroscopy point towards the higher solubility of the lithium salt in MG rubber. Moreover, two 7gs are observed for the MG-salt electrolyte system whereas only one 7g is obtained for the ENR-salt system at all salt concentrations. The carboxyl group of the MG is found to have a better solvation capability than the oxirane group of ENR. Ionic conductivities {a) and dielectric constants (^) are observed to increase with ascending salt content. However, restricted segmental motion due to the higher degree of Li+ ion coordination to the polar epoxy oxygen of the ENR-50 leads to lower ionic conductivity as compared to ENR-25 and dependency of d on salt concentration is more pronounced at low frequencies from 50 to approximately 1.0 x 104 Hz. A power law dependence of ionic conductivity on salt concentration is also observed in which the lower charge carrier mobility in ENR as compared to MG is in good agreement with its lower conductivity.
format	Research Reports
author	Sim, Lai Har Chan, Chin Han Kammer, Hans-Werner Mohd Yusof, Siti Nor Hafiza
author_facet	Sim, Lai Har Chan, Chin Han Kammer, Hans-Werner Mohd Yusof, Siti Nor Hafiza
author_sort	Sim, Lai Har
title	Properties for the thermodynamic control of the complexation of inorganic salt to the modified natural rubber / Assoc. Prof. Dr. Sim Lai Har … [et al.]
title_short	Properties for the thermodynamic control of the complexation of inorganic salt to the modified natural rubber / Assoc. Prof. Dr. Sim Lai Har … [et al.]
title_full	Properties for the thermodynamic control of the complexation of inorganic salt to the modified natural rubber / Assoc. Prof. Dr. Sim Lai Har … [et al.]
title_fullStr	Properties for the thermodynamic control of the complexation of inorganic salt to the modified natural rubber / Assoc. Prof. Dr. Sim Lai Har … [et al.]
title_full_unstemmed	Properties for the thermodynamic control of the complexation of inorganic salt to the modified natural rubber / Assoc. Prof. Dr. Sim Lai Har … [et al.]
title_sort	properties for the thermodynamic control of the complexation of inorganic salt to the modified natural rubber / assoc. prof. dr. sim lai har … [et al.]
publisher	Research Management Institute (RMI)
publishDate	2013
url	http://ir.uitm.edu.my/id/eprint/23726/ http://ir.uitm.edu.my/id/eprint/23726/1/LP_SIM%20LAI%20HAR%20RMI%2013_5.pdf
first_indexed	2023-09-18T23:11:15Z
last_indexed	2023-09-18T23:11:15Z
_version_	1777418817482260480

Properties for the thermodynamic control of the complexation of inorganic salt to the modified natural rubber / Assoc. Prof. Dr. Sim Lai Har … [et al.]

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