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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| Format: | Article |
| Language: | English English |
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MDPI
2012
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| Online Access: | http://psasir.upm.edu.my/id/eprint/25236/ http://psasir.upm.edu.my/id/eprint/25236/1/Preparation%2C%20characterization%20and%20thermal.pdf |
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| author | Ahmad, Mansor Gharayebi, Yadollah Salit, Mohd Sapuan Hussein, Mohd Zobir Ebrahimiasl, Saeideh Dehzangi, Arash |
| author_facet | Ahmad, Mansor Gharayebi, Yadollah Salit, Mohd Sapuan Hussein, Mohd Zobir Ebrahimiasl, Saeideh Dehzangi, Arash |
| author_sort | Ahmad, Mansor |
| building | UPM Institutional Repository |
| collection | Online Access |
| 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. |
| first_indexed | 2025-11-15T08:43:53Z |
| format | Article |
| id | upm-25236 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English English |
| last_indexed | 2025-11-15T08:43:53Z |
| publishDate | 2012 |
| publisher | MDPI |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-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 |
| 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. |
| title | 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_short | 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. |
| url | http://psasir.upm.edu.my/id/eprint/25236/ http://psasir.upm.edu.my/id/eprint/25236/ http://psasir.upm.edu.my/id/eprint/25236/1/Preparation%2C%20characterization%20and%20thermal.pdf |