Thermal Properties and Conductivity of Thermally Treated Epoxidized Natural Rubber-Based Solid Polymer Electrolytes

Thermal properties and ionic conductivity of epoxidized natural rubber (ENR)-based solid polymer electrolytes (SPEs) are influenced by their sample preparatory pathways. In literature, there are inconsistencies reported on conductivity values in the range of 10−8–10−9 S cm−1 due to different sample...

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Published in:Macromolecular Symposia
Main Author: Hussin N.S.; Harun F.; Chan C.H.
Format: Article
Language:English
Published: Wiley-VCH Verlag 2017
Online Access:https://www.scopus.com/inward/record.uri?eid=2-s2.0-85038358098&doi=10.1002%2fmasy.201700049&partnerID=40&md5=294e7775b26dfa08da6c3eb5497cd231
id 2-s2.0-85038358098
spelling 2-s2.0-85038358098
Hussin N.S.; Harun F.; Chan C.H.
Thermal Properties and Conductivity of Thermally Treated Epoxidized Natural Rubber-Based Solid Polymer Electrolytes
2017
Macromolecular Symposia
376
1
10.1002/masy.201700049
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85038358098&doi=10.1002%2fmasy.201700049&partnerID=40&md5=294e7775b26dfa08da6c3eb5497cd231
Thermal properties and ionic conductivity of epoxidized natural rubber (ENR)-based solid polymer electrolytes (SPEs) are influenced by their sample preparatory pathways. In literature, there are inconsistencies reported on conductivity values in the range of 10−8–10−9 S cm−1 due to different sample preparatory pathways for same systems at constant salt concentration. In this study, simple thermal treatment was adopted on SPE films for regulating the thermal properties of the materials which in turn to govern the conductivity of the materials. ENR (with 25 and 50 mol% epoxidation) and lithium perchlorate salt (0–20 wt.%) were used. The ENR-based SPE films were thermally treated with three different annealing times (i.e. t = 0, ½, 24 h) at 80 °C under nitrogen atmosphere. Differential scanning calorimetry and impedance spectroscopy were utilized to analyze the thermal properties and ionic conductivity at room temperature, respectively. The glass transition parameters such as glass transition temperature, change in heat capacity, width of glass transition and change in enthalpy of endothermic overshoot were elucidated. Higher glass transition temperature values are noted for ENR-based SPEs films with longer annealing time, which may imply higher extent of intermolecular interaction between ENR and salt, thus leading to an increase in ionic conductivity of ∼10−10–10−8 S cm−1 for t = 0 and 24 h, respectively at mass fraction of salt, WS = 0.107. Consequently, it is deemed important to have precise control in the thermal treatment of ENR-based SPEs during their preparatory stage. © 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Wiley-VCH Verlag
10221360
English
Article

author Hussin N.S.; Harun F.; Chan C.H.
spellingShingle Hussin N.S.; Harun F.; Chan C.H.
Thermal Properties and Conductivity of Thermally Treated Epoxidized Natural Rubber-Based Solid Polymer Electrolytes
author_facet Hussin N.S.; Harun F.; Chan C.H.
author_sort Hussin N.S.; Harun F.; Chan C.H.
title Thermal Properties and Conductivity of Thermally Treated Epoxidized Natural Rubber-Based Solid Polymer Electrolytes
title_short Thermal Properties and Conductivity of Thermally Treated Epoxidized Natural Rubber-Based Solid Polymer Electrolytes
title_full Thermal Properties and Conductivity of Thermally Treated Epoxidized Natural Rubber-Based Solid Polymer Electrolytes
title_fullStr Thermal Properties and Conductivity of Thermally Treated Epoxidized Natural Rubber-Based Solid Polymer Electrolytes
title_full_unstemmed Thermal Properties and Conductivity of Thermally Treated Epoxidized Natural Rubber-Based Solid Polymer Electrolytes
title_sort Thermal Properties and Conductivity of Thermally Treated Epoxidized Natural Rubber-Based Solid Polymer Electrolytes
publishDate 2017
container_title Macromolecular Symposia
container_volume 376
container_issue 1
doi_str_mv 10.1002/masy.201700049
url https://www.scopus.com/inward/record.uri?eid=2-s2.0-85038358098&doi=10.1002%2fmasy.201700049&partnerID=40&md5=294e7775b26dfa08da6c3eb5497cd231
description Thermal properties and ionic conductivity of epoxidized natural rubber (ENR)-based solid polymer electrolytes (SPEs) are influenced by their sample preparatory pathways. In literature, there are inconsistencies reported on conductivity values in the range of 10−8–10−9 S cm−1 due to different sample preparatory pathways for same systems at constant salt concentration. In this study, simple thermal treatment was adopted on SPE films for regulating the thermal properties of the materials which in turn to govern the conductivity of the materials. ENR (with 25 and 50 mol% epoxidation) and lithium perchlorate salt (0–20 wt.%) were used. The ENR-based SPE films were thermally treated with three different annealing times (i.e. t = 0, ½, 24 h) at 80 °C under nitrogen atmosphere. Differential scanning calorimetry and impedance spectroscopy were utilized to analyze the thermal properties and ionic conductivity at room temperature, respectively. The glass transition parameters such as glass transition temperature, change in heat capacity, width of glass transition and change in enthalpy of endothermic overshoot were elucidated. Higher glass transition temperature values are noted for ENR-based SPEs films with longer annealing time, which may imply higher extent of intermolecular interaction between ENR and salt, thus leading to an increase in ionic conductivity of ∼10−10–10−8 S cm−1 for t = 0 and 24 h, respectively at mass fraction of salt, WS = 0.107. Consequently, it is deemed important to have precise control in the thermal treatment of ENR-based SPEs during their preparatory stage. © 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
publisher Wiley-VCH Verlag
issn 10221360
language English
format Article
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