Preparation and characterization of epoxidized-30% poly (methyl methacrylate)-grafted natural rubber polymer electrolytes for electrochemical double layer supercapacitor / Khuzaimah Nazir

Preparation and characterization of epoxidized-30% poly (methyl methacrylate)-grafted natural rubber polymer electrolytes for electrochemical double layer supercapacitor / Khuzaimah Nazir

This dissertation focuses on the preparation and characterization of epoxidized- 30% poly(methyl methacrylate) grafted natural rubber (EMG30)-salt complexes and plasticized EMG30-salt complexes. In the present study, EMG30 as polymer host, lithium trifluoromethanesulfonate (LiCF3SO3) as doping salt...

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Main Author: Nazir, Khuzaimah
Format: Thesis
Language:English
Published: 2018
Subjects:
Electrostatics
Online Access:http://ir.uitm.edu.my/id/eprint/26837/
http://ir.uitm.edu.my/id/eprint/26837/1/TP_KHUZAIMAH%20NAZIR%20AS%2018_5.pdf
id uitm-26837
recordtype eprints
spelling uitm-268372019-12-16T09:20:25Z http://ir.uitm.edu.my/id/eprint/26837/ Preparation and characterization of epoxidized-30% poly (methyl methacrylate)-grafted natural rubber polymer electrolytes for electrochemical double layer supercapacitor / Khuzaimah Nazir Nazir, Khuzaimah Electrostatics This dissertation focuses on the preparation and characterization of epoxidized- 30% poly(methyl methacrylate) grafted natural rubber (EMG30)-salt complexes and plasticized EMG30-salt complexes. In the present study, EMG30 as polymer host, lithium trifluoromethanesulfonate (LiCF3SO3) as doping salt and ethylene carbonate (EC) as a plasticizer were used in the preparation of solid polymer electrolytes (SPEs) and gel polymer electrolytes (GPEs). The EMG30 was prepared by performic epoxidation method with various time reaction. Proton nuclear magnetic resonance (1HNMR) and Fourier transform infrared spectroscopy (FTIR) spectra confirm a new peak at 2.70-2.71 ppm and 871 cm-1 which were assigned to the epoxy group. 54.6, 62.3 and 50.0 mol% of epoxidation content were obtained in EMG30 at 6, 9 and 12 hours of time reactions, respectively. SPEs and GPEs based on EMG30 were prepared by the solution cast technique with different weight percent (wt.%) of LiCF3SO3 and EC. FTIR spectroscopy studies have shown that coordination of Li+ ions has occurred on the oxygen (O) atom in the carbonyl (C=O) group, ether group (O-CH3) and epoxy (C-O-C) group of EMG30. X-ray diffraction (XRD) analysis confirmed amorphous nature of EMG30 samples. Thermogravimetric analysis (TGA) have shown that thermal stability of EMG30 is increased compared to pure MG30. The differential scanning calorimetry (DSC) analysis found the epoxidation reaction has increased the Tg value of EMG30 (Tg ≈ - 39.1 °C) due to the restriction of hydrogen bonding. The morphology of the samples has also been investigated using Field-emission scanning electron microscopy (FESEM). EMG30 structure shows the homogeineity and there is no trace of phase separation could be observed by either physical observation or FESEM micrograph… 2018 Thesis NonPeerReviewed text en http://ir.uitm.edu.my/id/eprint/26837/1/TP_KHUZAIMAH%20NAZIR%20AS%2018_5.pdf Nazir, Khuzaimah (2018) Preparation and characterization of epoxidized-30% poly (methyl methacrylate)-grafted natural rubber polymer electrolytes for electrochemical double layer supercapacitor / Khuzaimah Nazir. PhD thesis, Universiti Teknologi MARA.
repository_type Digital Repository
institution_category Local University
institution Universiti Teknologi MARA
building UiTM Institutional Repository
collection Online Access
language English
topic Electrostatics
spellingShingle Electrostatics
Nazir, Khuzaimah
Preparation and characterization of epoxidized-30% poly (methyl methacrylate)-grafted natural rubber polymer electrolytes for electrochemical double layer supercapacitor / Khuzaimah Nazir
description This dissertation focuses on the preparation and characterization of epoxidized- 30% poly(methyl methacrylate) grafted natural rubber (EMG30)-salt complexes and plasticized EMG30-salt complexes. In the present study, EMG30 as polymer host, lithium trifluoromethanesulfonate (LiCF3SO3) as doping salt and ethylene carbonate (EC) as a plasticizer were used in the preparation of solid polymer electrolytes (SPEs) and gel polymer electrolytes (GPEs). The EMG30 was prepared by performic epoxidation method with various time reaction. Proton nuclear magnetic resonance (1HNMR) and Fourier transform infrared spectroscopy (FTIR) spectra confirm a new peak at 2.70-2.71 ppm and 871 cm-1 which were assigned to the epoxy group. 54.6, 62.3 and 50.0 mol% of epoxidation content were obtained in EMG30 at 6, 9 and 12 hours of time reactions, respectively. SPEs and GPEs based on EMG30 were prepared by the solution cast technique with different weight percent (wt.%) of LiCF3SO3 and EC. FTIR spectroscopy studies have shown that coordination of Li+ ions has occurred on the oxygen (O) atom in the carbonyl (C=O) group, ether group (O-CH3) and epoxy (C-O-C) group of EMG30. X-ray diffraction (XRD) analysis confirmed amorphous nature of EMG30 samples. Thermogravimetric analysis (TGA) have shown that thermal stability of EMG30 is increased compared to pure MG30. The differential scanning calorimetry (DSC) analysis found the epoxidation reaction has increased the Tg value of EMG30 (Tg ≈ - 39.1 °C) due to the restriction of hydrogen bonding. The morphology of the samples has also been investigated using Field-emission scanning electron microscopy (FESEM). EMG30 structure shows the homogeineity and there is no trace of phase separation could be observed by either physical observation or FESEM micrograph…
format Thesis
author Nazir, Khuzaimah
author_facet Nazir, Khuzaimah
author_sort Nazir, Khuzaimah
title Preparation and characterization of epoxidized-30% poly (methyl methacrylate)-grafted natural rubber polymer electrolytes for electrochemical double layer supercapacitor / Khuzaimah Nazir
title_short Preparation and characterization of epoxidized-30% poly (methyl methacrylate)-grafted natural rubber polymer electrolytes for electrochemical double layer supercapacitor / Khuzaimah Nazir
title_full Preparation and characterization of epoxidized-30% poly (methyl methacrylate)-grafted natural rubber polymer electrolytes for electrochemical double layer supercapacitor / Khuzaimah Nazir
title_fullStr Preparation and characterization of epoxidized-30% poly (methyl methacrylate)-grafted natural rubber polymer electrolytes for electrochemical double layer supercapacitor / Khuzaimah Nazir
title_full_unstemmed Preparation and characterization of epoxidized-30% poly (methyl methacrylate)-grafted natural rubber polymer electrolytes for electrochemical double layer supercapacitor / Khuzaimah Nazir
title_sort preparation and characterization of epoxidized-30% poly (methyl methacrylate)-grafted natural rubber polymer electrolytes for electrochemical double layer supercapacitor / khuzaimah nazir
publishDate 2018
url http://ir.uitm.edu.my/id/eprint/26837/
http://ir.uitm.edu.my/id/eprint/26837/1/TP_KHUZAIMAH%20NAZIR%20AS%2018_5.pdf
first_indexed 2023-09-18T23:17:28Z
last_indexed 2023-09-18T23:17:28Z
_version_ 1777419208839135232

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