Preparation And Characterization Of Electrospun Ceramic Nanofibers Into Polyimide Composite Films

Recently, many researchers have focused on one-dimensional materials such as nanofibers to enhance dielectric properties of the composites due to the unique properties. In this study, polyimide/ceramic nanofibers composite films were prepared by incorporating various types of ceramic nanofibers (BaT...

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Main Author:	Meng, Sopheak
Format:	Thesis
Language:	English
Published:	2017
Subjects:	T Technology
Online Access:	http://eprints.usm.my/48626/1/Preparation%20And%20Characterization%20Of%20Electrospun%20Ceramic%20Nanofibers%20Into%20Polyimide%20Composite%20Films.pdf
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spelling	my-usm-ep.486262021-11-17T03:42:15Z Preparation And Characterization Of Electrospun Ceramic Nanofibers Into Polyimide Composite Films 2017-07-01 Meng, Sopheak T Technology TA401-492 Materials of engineering and construction. Mechanics of materials Recently, many researchers have focused on one-dimensional materials such as nanofibers to enhance dielectric properties of the composites due to the unique properties. In this study, polyimide/ceramic nanofibers composite films were prepared by incorporating various types of ceramic nanofibers (BaTiO3, TiO2 and ZrO2) to polyimide matrix derived from 2,2-Bis[4-(4-aminophenoxy)phenyl]propane (BAPP) and 3,3',4,4'-Biphenyl tetracarboxylic dianhydride (BPDA). The ceramic nanofibers were prepared by the combination of sol-gel process, electrospinning and calcination before incorporating with polyimide via in-situ polymerization assisted by ultrasonication. Fourier transform infrared (FTIR), X-ray diffraction (XRD), Scanning electron microscopy (SEM), impedance analyzer (LCR meter), Differential Scanning calorimetry (DSC) and thermal gravimetric analysis (TGA) were used to characterize properties of composite films such as chemical structure, crystal phase, morphology, dielectric and thermal properties. FTIR spectra showed the characteristic peaks of the imide groups in the composite films as well as absorption bands corresponding to ceramic nanofibers. XRD diffractograms demonstrated the composite films exhibited the crystal structure similar to those of their parent ceramic nanofibers. The results from SEM micrographs indicated ceramic nanofibers were well dispersed in the composite films due to their large aspect ratio and ultrasonication method. Dielectric constant of the PI/BaTiO3 (20 wt%) is 6.78 (about 2 times of pure polyimide) with low dielectric loss of 0.009 at 1 MHz and room temperature. Lastly, all of the composite films also showed high thermal stability. 2017-07 Thesis http://eprints.usm.my/48626/ http://eprints.usm.my/48626/1/Preparation%20And%20Characterization%20Of%20Electrospun%20Ceramic%20Nanofibers%20Into%20Polyimide%20Composite%20Films.pdf application/pdf en public masters Universiti Sains Malaysia Pusat Pengajian Kejuruteraan Bahan & Sumber Mineral
institution	Universiti Sains Malaysia
collection	USM Institutional Repository
language	English
topic	T Technology T Technology
spellingShingle	T Technology T Technology Meng, Sopheak Preparation And Characterization Of Electrospun Ceramic Nanofibers Into Polyimide Composite Films
description	Recently, many researchers have focused on one-dimensional materials such as nanofibers to enhance dielectric properties of the composites due to the unique properties. In this study, polyimide/ceramic nanofibers composite films were prepared by incorporating various types of ceramic nanofibers (BaTiO3, TiO2 and ZrO2) to polyimide matrix derived from 2,2-Bis[4-(4-aminophenoxy)phenyl]propane (BAPP) and 3,3',4,4'-Biphenyl tetracarboxylic dianhydride (BPDA). The ceramic nanofibers were prepared by the combination of sol-gel process, electrospinning and calcination before incorporating with polyimide via in-situ polymerization assisted by ultrasonication. Fourier transform infrared (FTIR), X-ray diffraction (XRD), Scanning electron microscopy (SEM), impedance analyzer (LCR meter), Differential Scanning calorimetry (DSC) and thermal gravimetric analysis (TGA) were used to characterize properties of composite films such as chemical structure, crystal phase, morphology, dielectric and thermal properties. FTIR spectra showed the characteristic peaks of the imide groups in the composite films as well as absorption bands corresponding to ceramic nanofibers. XRD diffractograms demonstrated the composite films exhibited the crystal structure similar to those of their parent ceramic nanofibers. The results from SEM micrographs indicated ceramic nanofibers were well dispersed in the composite films due to their large aspect ratio and ultrasonication method. Dielectric constant of the PI/BaTiO3 (20 wt%) is 6.78 (about 2 times of pure polyimide) with low dielectric loss of 0.009 at 1 MHz and room temperature. Lastly, all of the composite films also showed high thermal stability.
format	Thesis
qualification_level	Master's degree
author	Meng, Sopheak
author_facet	Meng, Sopheak
author_sort	Meng, Sopheak
title	Preparation And Characterization Of Electrospun Ceramic Nanofibers Into Polyimide Composite Films
title_short	Preparation And Characterization Of Electrospun Ceramic Nanofibers Into Polyimide Composite Films
title_full	Preparation And Characterization Of Electrospun Ceramic Nanofibers Into Polyimide Composite Films
title_fullStr	Preparation And Characterization Of Electrospun Ceramic Nanofibers Into Polyimide Composite Films
title_full_unstemmed	Preparation And Characterization Of Electrospun Ceramic Nanofibers Into Polyimide Composite Films
title_sort	preparation and characterization of electrospun ceramic nanofibers into polyimide composite films
granting_institution	Universiti Sains Malaysia
granting_department	Pusat Pengajian Kejuruteraan Bahan & Sumber Mineral
publishDate	2017
url	http://eprints.usm.my/48626/1/Preparation%20And%20Characterization%20Of%20Electrospun%20Ceramic%20Nanofibers%20Into%20Polyimide%20Composite%20Films.pdf
_version_	1747821953311309824

Preparation And Characterization Of Electrospun Ceramic Nanofibers Into Polyimide Composite Films

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