Characterization of PVC/MWCNTs Nanocomposite: Solvent Blend
Polyvinyl Vinyl Chloride (PVC) multiwall carbon nanotubes (MWCNTs) nanocomposite flexible films were prepared using the solvent blend technique. Chloroform (CHCl3) and tetrahydrofuran ((CH2)4O) were used as solvents for MWCNTs and PVC, respectively. The effect of the solvents’ blend on electrical, o...
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doaj-f47fcfeb772549f4a0e3c1859472e05a2021-09-05T14:00:33ZengDe GruyterScience and Engineering of Composite Materials0792-12332191-03592020-03-01271556410.1515/secm-2020-0003secm-2020-0003Characterization of PVC/MWCNTs Nanocomposite: Solvent BlendNaim Abdullah F. Al0AlFannakh Huda1Arafat Samia2Ibrahim S. S.3Physics department, King Faisal University, Al-Ahsa, Saudi ArabiaPhysics department, King Faisal University, Al-Ahsa, Saudi ArabiaPhysics department, King Faisal University, Al-Ahsa, Saudi ArabiaPhysics department, College of Science, Cairo University, Giza, EgyptPolyvinyl Vinyl Chloride (PVC) multiwall carbon nanotubes (MWCNTs) nanocomposite flexible films were prepared using the solvent blend technique. Chloroform (CHCl3) and tetrahydrofuran ((CH2)4O) were used as solvents for MWCNTs and PVC, respectively. The effect of the solvents’ blend on electrical, optical and thermal properties of PVC/MWCNTs were investigated. The results of the Raman spectrum showed that all the characteristic bands of PVC polymer have a slight shift due to addition of MWCNTs. Electrical results showed that the nanocomposite samples with chloroform volume ratios of 10% and 25% had nearly the same conductivity. This is attributed to the formation of the MWCNTs network, which assisted in electrical conductivity. The I-V hysteresis curve decreases as the temperature increases and as it approaches the glass transition temperature. The non-isothermal kinetics analysis for PVC and PVC/MWCNTs were investigated by Thermogravimetry Analysis (TGA) using the model-free kinetic method. The non-isothermal measurements were carried out at five heating rates of 5 to 40∘C/min. The results show that the main decomposition process has constant apparent activation energies for all samples. The use of the bi-solvent method has improved the dispersion of untreated MWCNTs, and this has been reflected on the stability of both electrical and thermal properties.https://doi.org/10.1515/secm-2020-0003multiwall carbon nanotube mwcntspvcpolymer nanocompositesolvent blendkinetic analysis |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Naim Abdullah F. Al AlFannakh Huda Arafat Samia Ibrahim S. S. |
spellingShingle |
Naim Abdullah F. Al AlFannakh Huda Arafat Samia Ibrahim S. S. Characterization of PVC/MWCNTs Nanocomposite: Solvent Blend Science and Engineering of Composite Materials multiwall carbon nanotube mwcnts pvc polymer nanocomposite solvent blend kinetic analysis |
author_facet |
Naim Abdullah F. Al AlFannakh Huda Arafat Samia Ibrahim S. S. |
author_sort |
Naim Abdullah F. Al |
title |
Characterization of PVC/MWCNTs Nanocomposite: Solvent Blend |
title_short |
Characterization of PVC/MWCNTs Nanocomposite: Solvent Blend |
title_full |
Characterization of PVC/MWCNTs Nanocomposite: Solvent Blend |
title_fullStr |
Characterization of PVC/MWCNTs Nanocomposite: Solvent Blend |
title_full_unstemmed |
Characterization of PVC/MWCNTs Nanocomposite: Solvent Blend |
title_sort |
characterization of pvc/mwcnts nanocomposite: solvent blend |
publisher |
De Gruyter |
series |
Science and Engineering of Composite Materials |
issn |
0792-1233 2191-0359 |
publishDate |
2020-03-01 |
description |
Polyvinyl Vinyl Chloride (PVC) multiwall carbon nanotubes (MWCNTs) nanocomposite flexible films were prepared using the solvent blend technique. Chloroform (CHCl3) and tetrahydrofuran ((CH2)4O) were used as solvents for MWCNTs and PVC, respectively. The effect of the solvents’ blend on electrical, optical and thermal properties of PVC/MWCNTs were investigated. The results of the Raman spectrum showed that all the characteristic bands of PVC polymer have a slight shift due to addition of MWCNTs. Electrical results showed that the nanocomposite samples with chloroform volume ratios of 10% and 25% had nearly the same conductivity. This is attributed to the formation of the MWCNTs network, which assisted in electrical conductivity. The I-V hysteresis curve decreases as the temperature increases and as it approaches the glass transition temperature. The non-isothermal kinetics analysis for PVC and PVC/MWCNTs were investigated by Thermogravimetry Analysis (TGA) using the model-free kinetic method. The non-isothermal measurements were carried out at five heating rates of 5 to 40∘C/min. The results show that the main decomposition process has constant apparent activation energies for all samples. The use of the bi-solvent method has improved the dispersion of untreated MWCNTs, and this has been reflected on the stability of both electrical and thermal properties. |
topic |
multiwall carbon nanotube mwcnts pvc polymer nanocomposite solvent blend kinetic analysis |
url |
https://doi.org/10.1515/secm-2020-0003 |
work_keys_str_mv |
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