Preparation and characterization of poly (L-leucine)-1,3-diamino propane (PLL)-lithium iodide (Lil) as solid polymer electrolyte / Norazmawati Lahazan

The quest of new materials for solid electrolyte is unlimited. In this work, poly amino acid that is poly (L-Leucine)1,3-diamino propane (PLL) has been chosen as the host for solid polymer electrolyte. Solid polymer electrolyte containing PLL was prepared via low temperature sintering method. The PL...

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Main Author:	Lahazan, Norazmawati
Format:	Thesis
Language:	English
Published:	2009
Subjects:	Polymers Polymeric composites
Online Access:	https://ir.uitm.edu.my/id/eprint/27184/1/TM_NORAZMAWATI%20LAHAZAN%20AS%2009_5.pdf
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spelling	my-uitm-ir.271842022-06-14T04:28:43Z Preparation and characterization of poly (L-leucine)-1,3-diamino propane (PLL)-lithium iodide (Lil) as solid polymer electrolyte / Norazmawati Lahazan 2009 Lahazan, Norazmawati Polymers. Polymeric composites The quest of new materials for solid electrolyte is unlimited. In this work, poly amino acid that is poly (L-Leucine)1,3-diamino propane (PLL) has been chosen as the host for solid polymer electrolyte. Solid polymer electrolyte containing PLL was prepared via low temperature sintering method. The PLL was mixed with lithium iodide (LiI) at various wt %, ground, pelletized and then sintered at 90°C in a vacuum oven to initiate the reaction and maintained at that temperature for 3 days (72 hours). The electrical conductivity of the samples was measured using impedance spectroscopy technique. The maximum conductivity of 1.7 X 10-4 S/cm at room temperature was obtained for the sample containing 50 wt % of LiI. The conductivity was contributed by lithium ions since the ion transfer move with high mobility in the system. The ionic transference number of the lithium ions for the sample with the highest electrical conductivity is 0.88. The ionic conductivity was related to the structure of the material and was investigated using infrared technique (FTIR). FTIR was employed to verify the chelation of cation at C=O of PLL at wavenumber of 1642 cm-1. The band at 1642 cm-1 have shifted to lower wavenumber and this confirms that complexation has occurred in the sample. The X-ray diffraction result revealed that the poly(L-Leucine)1,3-diamino propane (PLL) is semi-crystalline and Lil is crystalline in nature. The XRD diffractogram of various PLL-LiI samples showed that some of the peaks have disappeared and the peak at 28 = 10 - 18° has broadened in PLL-LiI samples. The sample has become more amorphous with Lil added. The temperature dependence conductivity was done from 30°C to 90°C to determine the conduction mechanism. It was found that the conduction mechanism follows the Vogel-Tamman-Fulcher (VTF) characteristics. 2009 Thesis https://ir.uitm.edu.my/id/eprint/27184/ https://ir.uitm.edu.my/id/eprint/27184/1/TM_NORAZMAWATI%20LAHAZAN%20AS%2009_5.pdf text en public masters Universiti Teknologi MARA Faculty of Applied Sciences
institution	Universiti Teknologi MARA
collection	UiTM Institutional Repository
language	English
topic	Polymers Polymeric composites
spellingShingle	Polymers Polymeric composites Lahazan, Norazmawati Preparation and characterization of poly (L-leucine)-1,3-diamino propane (PLL)-lithium iodide (Lil) as solid polymer electrolyte / Norazmawati Lahazan
description	The quest of new materials for solid electrolyte is unlimited. In this work, poly amino acid that is poly (L-Leucine)1,3-diamino propane (PLL) has been chosen as the host for solid polymer electrolyte. Solid polymer electrolyte containing PLL was prepared via low temperature sintering method. The PLL was mixed with lithium iodide (LiI) at various wt %, ground, pelletized and then sintered at 90°C in a vacuum oven to initiate the reaction and maintained at that temperature for 3 days (72 hours). The electrical conductivity of the samples was measured using impedance spectroscopy technique. The maximum conductivity of 1.7 X 10-4 S/cm at room temperature was obtained for the sample containing 50 wt % of LiI. The conductivity was contributed by lithium ions since the ion transfer move with high mobility in the system. The ionic transference number of the lithium ions for the sample with the highest electrical conductivity is 0.88. The ionic conductivity was related to the structure of the material and was investigated using infrared technique (FTIR). FTIR was employed to verify the chelation of cation at C=O of PLL at wavenumber of 1642 cm-1. The band at 1642 cm-1 have shifted to lower wavenumber and this confirms that complexation has occurred in the sample. The X-ray diffraction result revealed that the poly(L-Leucine)1,3-diamino propane (PLL) is semi-crystalline and Lil is crystalline in nature. The XRD diffractogram of various PLL-LiI samples showed that some of the peaks have disappeared and the peak at 28 = 10 - 18° has broadened in PLL-LiI samples. The sample has become more amorphous with Lil added. The temperature dependence conductivity was done from 30°C to 90°C to determine the conduction mechanism. It was found that the conduction mechanism follows the Vogel-Tamman-Fulcher (VTF) characteristics.
format	Thesis
qualification_level	Master's degree
author	Lahazan, Norazmawati
author_facet	Lahazan, Norazmawati
author_sort	Lahazan, Norazmawati
title	Preparation and characterization of poly (L-leucine)-1,3-diamino propane (PLL)-lithium iodide (Lil) as solid polymer electrolyte / Norazmawati Lahazan
title_short	Preparation and characterization of poly (L-leucine)-1,3-diamino propane (PLL)-lithium iodide (Lil) as solid polymer electrolyte / Norazmawati Lahazan
title_full	Preparation and characterization of poly (L-leucine)-1,3-diamino propane (PLL)-lithium iodide (Lil) as solid polymer electrolyte / Norazmawati Lahazan
title_fullStr	Preparation and characterization of poly (L-leucine)-1,3-diamino propane (PLL)-lithium iodide (Lil) as solid polymer electrolyte / Norazmawati Lahazan
title_full_unstemmed	Preparation and characterization of poly (L-leucine)-1,3-diamino propane (PLL)-lithium iodide (Lil) as solid polymer electrolyte / Norazmawati Lahazan
title_sort	preparation and characterization of poly (l-leucine)-1,3-diamino propane (pll)-lithium iodide (lil) as solid polymer electrolyte / norazmawati lahazan
granting_institution	Universiti Teknologi MARA
granting_department	Faculty of Applied Sciences
publishDate	2009
url	https://ir.uitm.edu.my/id/eprint/27184/1/TM_NORAZMAWATI%20LAHAZAN%20AS%2009_5.pdf
_version_	1783733931691999232

Preparation and characterization of poly (L-leucine)-1,3-diamino propane (PLL)-lithium iodide (Lil) as solid polymer electrolyte / Norazmawati Lahazan

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