Thermo-Active Behavior of Ethylene-Vinyl Acetate | Multiwall Carbon Nanotube Composites Examined by in Situ near-Edge X-ray Absorption Fine-Structure Spectroscopy

[Image: see text] NEXAFS spectroscopy was used to investigate the temperature dependence of thermally active ethylene-vinyl acetate | multiwall carbon nanotube (EVA|MWCNT) films. The data shows systematic variations of intensities with increasing temperature. Molecular orbital assignment of interpla...

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Autores principales: Winter, A. Douglas, Larios, Eduardo, Alamgir, Faisal M., Jaye, Cherno, Fischer, Daniel A., Omastová, Mária, Campo, Eva M.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2014
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3983319/
https://www.ncbi.nlm.nih.gov/pubmed/24803975
http://dx.doi.org/10.1021/jp409413k
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author Winter, A. Douglas
Larios, Eduardo
Alamgir, Faisal M.
Jaye, Cherno
Fischer, Daniel A.
Omastová, Mária
Campo, Eva M.
author_facet Winter, A. Douglas
Larios, Eduardo
Alamgir, Faisal M.
Jaye, Cherno
Fischer, Daniel A.
Omastová, Mária
Campo, Eva M.
author_sort Winter, A. Douglas
collection PubMed
description [Image: see text] NEXAFS spectroscopy was used to investigate the temperature dependence of thermally active ethylene-vinyl acetate | multiwall carbon nanotube (EVA|MWCNT) films. The data shows systematic variations of intensities with increasing temperature. Molecular orbital assignment of interplaying intensities identified the 1s → π*(C=C) and 1s → π*(C=O) transitions as the main actors during temperature variation. Furthermore, enhanced near-edge interplay was observed in prestrained composites. Because macroscopic observations confirmed enhanced thermal-mechanical actuation in prestrained composites, our findings suggest that the interplay of C=C and C=O π orbitals may be instrumental to actuation.
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spelling pubmed-39833192015-01-27 Thermo-Active Behavior of Ethylene-Vinyl Acetate | Multiwall Carbon Nanotube Composites Examined by in Situ near-Edge X-ray Absorption Fine-Structure Spectroscopy Winter, A. Douglas Larios, Eduardo Alamgir, Faisal M. Jaye, Cherno Fischer, Daniel A. Omastová, Mária Campo, Eva M. J Phys Chem C Nanomater Interfaces [Image: see text] NEXAFS spectroscopy was used to investigate the temperature dependence of thermally active ethylene-vinyl acetate | multiwall carbon nanotube (EVA|MWCNT) films. The data shows systematic variations of intensities with increasing temperature. Molecular orbital assignment of interplaying intensities identified the 1s → π*(C=C) and 1s → π*(C=O) transitions as the main actors during temperature variation. Furthermore, enhanced near-edge interplay was observed in prestrained composites. Because macroscopic observations confirmed enhanced thermal-mechanical actuation in prestrained composites, our findings suggest that the interplay of C=C and C=O π orbitals may be instrumental to actuation. American Chemical Society 2014-01-27 2014-02-20 /pmc/articles/PMC3983319/ /pubmed/24803975 http://dx.doi.org/10.1021/jp409413k Text en Copyright © 2014 American Chemical Society
spellingShingle Winter, A. Douglas
Larios, Eduardo
Alamgir, Faisal M.
Jaye, Cherno
Fischer, Daniel A.
Omastová, Mária
Campo, Eva M.
Thermo-Active Behavior of Ethylene-Vinyl Acetate | Multiwall Carbon Nanotube Composites Examined by in Situ near-Edge X-ray Absorption Fine-Structure Spectroscopy
title Thermo-Active Behavior of Ethylene-Vinyl Acetate | Multiwall Carbon Nanotube Composites Examined by in Situ near-Edge X-ray Absorption Fine-Structure Spectroscopy
title_full Thermo-Active Behavior of Ethylene-Vinyl Acetate | Multiwall Carbon Nanotube Composites Examined by in Situ near-Edge X-ray Absorption Fine-Structure Spectroscopy
title_fullStr Thermo-Active Behavior of Ethylene-Vinyl Acetate | Multiwall Carbon Nanotube Composites Examined by in Situ near-Edge X-ray Absorption Fine-Structure Spectroscopy
title_full_unstemmed Thermo-Active Behavior of Ethylene-Vinyl Acetate | Multiwall Carbon Nanotube Composites Examined by in Situ near-Edge X-ray Absorption Fine-Structure Spectroscopy
title_short Thermo-Active Behavior of Ethylene-Vinyl Acetate | Multiwall Carbon Nanotube Composites Examined by in Situ near-Edge X-ray Absorption Fine-Structure Spectroscopy
title_sort thermo-active behavior of ethylene-vinyl acetate | multiwall carbon nanotube composites examined by in situ near-edge x-ray absorption fine-structure spectroscopy
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3983319/
https://www.ncbi.nlm.nih.gov/pubmed/24803975
http://dx.doi.org/10.1021/jp409413k
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