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Preparation, characterization and thermal degradation of Polyimide (4-APS/BTDA)/siO2 composite films.

Polyimide/SiO2 composite films were prepared from tetraethoxysilane (TEOS) and poly(amic acid) (PAA) based on aromatic diamine (4-aminophenyl sulfone) (4-APS) and aromatic dianhydride (3,3,4,4-benzophenonetetracarboxylic dianhydride) (BTDA) via a sol-gel process in N-methyl-2-pyrrolidinone (NMP). Th...

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Main Authors: Ahmad, Mansor, Gharayebi, Yadollah, Salit, Mohd Sapuan, Hussein, Mohd Zobir, Ebrahimiasl, Saeideh, Dehzangi, Arash
Format: Article
Language:English
English
Published: MDPI 2012
Online Access:http://psasir.upm.edu.my/id/eprint/25236/1/Preparation%2C%20characterization%20and%20thermal.pdf
http://psasir.upm.edu.my/id/eprint/25236/
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spelling my.upm.eprints.252362015-09-22T07:47:44Z http://psasir.upm.edu.my/id/eprint/25236/ Preparation, characterization and thermal degradation of Polyimide (4-APS/BTDA)/siO2 composite films. Ahmad, Mansor Gharayebi, Yadollah Salit, Mohd Sapuan Hussein, Mohd Zobir Ebrahimiasl, Saeideh Dehzangi, Arash Polyimide/SiO2 composite films were prepared from tetraethoxysilane (TEOS) and poly(amic acid) (PAA) based on aromatic diamine (4-aminophenyl sulfone) (4-APS) and aromatic dianhydride (3,3,4,4-benzophenonetetracarboxylic dianhydride) (BTDA) via a sol-gel process in N-methyl-2-pyrrolidinone (NMP). The prepared polyimide/SiO2 composite films were characterized using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscope (SEM) and thermogravimetric analysis (TGA). The FTIR results confirmed the synthesis of polyimide (4-APS/BTDA) and the formation of SiO2 particles in the polyimide matrix. Meanwhile, the SEM images showed that the SiO2 particles were well dispersed in the polyimide matrix. Thermal stability and kinetic parameters of the degradation processes for the prepared polyimide/SiO2 composite films were investigated using TGA in N2 atmosphere. The activation energy of the solid-state process was calculated using Flynn–Wall–Ozawa’s method without the knowledge of the reaction mechanism. The results indicated that thermal stability and the values of the calculated activation energies increased with the increase of the TEOS loading and the activation energy also varied with the percentage of weight loss for all compositions. MDPI 2012-04 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/25236/1/Preparation%2C%20characterization%20and%20thermal.pdf Ahmad, Mansor and Gharayebi, Yadollah and Salit, Mohd Sapuan and Hussein, Mohd Zobir and Ebrahimiasl, Saeideh and Dehzangi, Arash (2012) Preparation, characterization and thermal degradation of Polyimide (4-APS/BTDA)/siO2 composite films. International Journal of Molecular Sciences, 13 (4). pp. 4860-4872. ISSN 1422-0067 10.3390/ijms13044860 English
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
English
description Polyimide/SiO2 composite films were prepared from tetraethoxysilane (TEOS) and poly(amic acid) (PAA) based on aromatic diamine (4-aminophenyl sulfone) (4-APS) and aromatic dianhydride (3,3,4,4-benzophenonetetracarboxylic dianhydride) (BTDA) via a sol-gel process in N-methyl-2-pyrrolidinone (NMP). The prepared polyimide/SiO2 composite films were characterized using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscope (SEM) and thermogravimetric analysis (TGA). The FTIR results confirmed the synthesis of polyimide (4-APS/BTDA) and the formation of SiO2 particles in the polyimide matrix. Meanwhile, the SEM images showed that the SiO2 particles were well dispersed in the polyimide matrix. Thermal stability and kinetic parameters of the degradation processes for the prepared polyimide/SiO2 composite films were investigated using TGA in N2 atmosphere. The activation energy of the solid-state process was calculated using Flynn–Wall–Ozawa’s method without the knowledge of the reaction mechanism. The results indicated that thermal stability and the values of the calculated activation energies increased with the increase of the TEOS loading and the activation energy also varied with the percentage of weight loss for all compositions.
format Article
author Ahmad, Mansor
Gharayebi, Yadollah
Salit, Mohd Sapuan
Hussein, Mohd Zobir
Ebrahimiasl, Saeideh
Dehzangi, Arash
spellingShingle Ahmad, Mansor
Gharayebi, Yadollah
Salit, Mohd Sapuan
Hussein, Mohd Zobir
Ebrahimiasl, Saeideh
Dehzangi, Arash
Preparation, characterization and thermal degradation of Polyimide (4-APS/BTDA)/siO2 composite films.
author_facet Ahmad, Mansor
Gharayebi, Yadollah
Salit, Mohd Sapuan
Hussein, Mohd Zobir
Ebrahimiasl, Saeideh
Dehzangi, Arash
author_sort Ahmad, Mansor
title Preparation, characterization and thermal degradation of Polyimide (4-APS/BTDA)/siO2 composite films.
title_short Preparation, characterization and thermal degradation of Polyimide (4-APS/BTDA)/siO2 composite films.
title_full Preparation, characterization and thermal degradation of Polyimide (4-APS/BTDA)/siO2 composite films.
title_fullStr Preparation, characterization and thermal degradation of Polyimide (4-APS/BTDA)/siO2 composite films.
title_full_unstemmed Preparation, characterization and thermal degradation of Polyimide (4-APS/BTDA)/siO2 composite films.
title_sort preparation, characterization and thermal degradation of polyimide (4-aps/btda)/sio2 composite films.
publisher MDPI
publishDate 2012
url http://psasir.upm.edu.my/id/eprint/25236/1/Preparation%2C%20characterization%20and%20thermal.pdf
http://psasir.upm.edu.my/id/eprint/25236/
_version_ 1643828600182407168
score 13.244413

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