Influence of the electronic distribution of polymers in the spatial conformation of polymer grafted carbon nanotube composites
In this work we report the covalent functionalization of multiwalled carbon nanotubes (MWCNTs) with polyacrylonitrile (PAN) and polyvinylpyridine (PVP) by the graft from method. Differences in the electronic distribution of both polymers resulted in different interaction between polymers and the nan...
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Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09214526_v407_n16_p3184_Garate http://hdl.handle.net/20.500.12110/paper_09214526_v407_n16_p3184_Garate |
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paper:paper_09214526_v407_n16_p3184_Garate2023-06-08T15:50:38Z Influence of the electronic distribution of polymers in the spatial conformation of polymer grafted carbon nanotube composites Fascio, Mirta Liliana Goyanes, Silvia Nair Carbon nanotubes Functionalization Polyacrylonitrile Polyvinylpyridine Aromatic group Carbon-nanotube composites Covalent functionalizations Electronic distribution Functionalizations Functionalized Graft-from Morphological changes Nano scale Polymer-grafted Polyvinylpyridine Spatial conformation UV-vis spectroscopy Aromatic polymers Carbon nanotubes Fourier transform infrared spectroscopy Grafting (chemical) High resolution transmission electron microscopy Multiwalled carbon nanotubes (MWCN) Polyacrylonitriles Thermogravimetric analysis Ultraviolet visible spectroscopy Polymers In this work we report the covalent functionalization of multiwalled carbon nanotubes (MWCNTs) with polyacrylonitrile (PAN) and polyvinylpyridine (PVP) by the graft from method. Differences in the electronic distribution of both polymers resulted in different interaction between polymers and the nanotubes. It was found that PVP chains wrapped the nanotubes while nanotubes functionalized with PAN presented PAN chains forming amorphous entanglements on the nanoscale linked to the MWCNTs. Differences in the conformation between both polymers and the MWCNTs can be attributed to interactions between the aromatic groups in PVP and the MWCNTs through π-π stacking. The absence of aromatic groups in the case of the PAN chains favours the interaction between them. The functionalization efficiency was characterized using Fourier transform infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA) and UV-vis spectroscopy, while morphological changes were characterized by high resolution transmission electron microscopy. © 2011 Elsevier B.V. All rights reserved. Fil:Fascio, M.L. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Goyanes, S. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2012 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09214526_v407_n16_p3184_Garate http://hdl.handle.net/20.500.12110/paper_09214526_v407_n16_p3184_Garate |
institution |
Universidad de Buenos Aires |
institution_str |
I-28 |
repository_str |
R-134 |
collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
topic |
Carbon nanotubes Functionalization Polyacrylonitrile Polyvinylpyridine Aromatic group Carbon-nanotube composites Covalent functionalizations Electronic distribution Functionalizations Functionalized Graft-from Morphological changes Nano scale Polymer-grafted Polyvinylpyridine Spatial conformation UV-vis spectroscopy Aromatic polymers Carbon nanotubes Fourier transform infrared spectroscopy Grafting (chemical) High resolution transmission electron microscopy Multiwalled carbon nanotubes (MWCN) Polyacrylonitriles Thermogravimetric analysis Ultraviolet visible spectroscopy Polymers |
spellingShingle |
Carbon nanotubes Functionalization Polyacrylonitrile Polyvinylpyridine Aromatic group Carbon-nanotube composites Covalent functionalizations Electronic distribution Functionalizations Functionalized Graft-from Morphological changes Nano scale Polymer-grafted Polyvinylpyridine Spatial conformation UV-vis spectroscopy Aromatic polymers Carbon nanotubes Fourier transform infrared spectroscopy Grafting (chemical) High resolution transmission electron microscopy Multiwalled carbon nanotubes (MWCN) Polyacrylonitriles Thermogravimetric analysis Ultraviolet visible spectroscopy Polymers Fascio, Mirta Liliana Goyanes, Silvia Nair Influence of the electronic distribution of polymers in the spatial conformation of polymer grafted carbon nanotube composites |
topic_facet |
Carbon nanotubes Functionalization Polyacrylonitrile Polyvinylpyridine Aromatic group Carbon-nanotube composites Covalent functionalizations Electronic distribution Functionalizations Functionalized Graft-from Morphological changes Nano scale Polymer-grafted Polyvinylpyridine Spatial conformation UV-vis spectroscopy Aromatic polymers Carbon nanotubes Fourier transform infrared spectroscopy Grafting (chemical) High resolution transmission electron microscopy Multiwalled carbon nanotubes (MWCN) Polyacrylonitriles Thermogravimetric analysis Ultraviolet visible spectroscopy Polymers |
description |
In this work we report the covalent functionalization of multiwalled carbon nanotubes (MWCNTs) with polyacrylonitrile (PAN) and polyvinylpyridine (PVP) by the graft from method. Differences in the electronic distribution of both polymers resulted in different interaction between polymers and the nanotubes. It was found that PVP chains wrapped the nanotubes while nanotubes functionalized with PAN presented PAN chains forming amorphous entanglements on the nanoscale linked to the MWCNTs. Differences in the conformation between both polymers and the MWCNTs can be attributed to interactions between the aromatic groups in PVP and the MWCNTs through π-π stacking. The absence of aromatic groups in the case of the PAN chains favours the interaction between them. The functionalization efficiency was characterized using Fourier transform infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA) and UV-vis spectroscopy, while morphological changes were characterized by high resolution transmission electron microscopy. © 2011 Elsevier B.V. All rights reserved. |
author |
Fascio, Mirta Liliana Goyanes, Silvia Nair |
author_facet |
Fascio, Mirta Liliana Goyanes, Silvia Nair |
author_sort |
Fascio, Mirta Liliana |
title |
Influence of the electronic distribution of polymers in the spatial conformation of polymer grafted carbon nanotube composites |
title_short |
Influence of the electronic distribution of polymers in the spatial conformation of polymer grafted carbon nanotube composites |
title_full |
Influence of the electronic distribution of polymers in the spatial conformation of polymer grafted carbon nanotube composites |
title_fullStr |
Influence of the electronic distribution of polymers in the spatial conformation of polymer grafted carbon nanotube composites |
title_full_unstemmed |
Influence of the electronic distribution of polymers in the spatial conformation of polymer grafted carbon nanotube composites |
title_sort |
influence of the electronic distribution of polymers in the spatial conformation of polymer grafted carbon nanotube composites |
publishDate |
2012 |
url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09214526_v407_n16_p3184_Garate http://hdl.handle.net/20.500.12110/paper_09214526_v407_n16_p3184_Garate |
work_keys_str_mv |
AT fasciomirtaliliana influenceoftheelectronicdistributionofpolymersinthespatialconformationofpolymergraftedcarbonnanotubecomposites AT goyanessilvianair influenceoftheelectronicdistributionofpolymersinthespatialconformationofpolymergraftedcarbonnanotubecomposites |
_version_ |
1768541660548956160 |