Chain Length Effects on the Dynamics of Poly(ethylene oxide) Confined in Graphite Oxide: A Broadband Dielectric Spectroscopy Study

2013 ◽  
Vol 46 (19) ◽  
pp. 7932-7939 ◽  
Author(s):  
Fabienne Barroso-Bujans ◽  
Silvina Cerveny ◽  
Ángel Alegría ◽  
Juan Colmenero
Keyword(s):  
Ethylene Oxide ◽  
Chain Length ◽  
Graphite Oxide ◽  
Dielectric Spectroscopy ◽  
Spectroscopy Study ◽  
Broadband Dielectric Spectroscopy ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene ◽  
Length Effects

Chain conformation of poly(acrylic acid)-graft-poly(ethylene oxide)-graft-dodecyl in solution: an anomalous counter-ions condensation

Soft Matter ◽  
2018 ◽  
Vol 14 (7) ◽  
pp. 1130-1141 ◽  
Author(s):  
Xinlu Zhou ◽  
Kongshuang Zhao
Keyword(s):  
Acrylic Acid ◽  
Ethylene Oxide ◽  
Aqueous Solutions ◽  
Dielectric Spectroscopy ◽  
Chain Conformation ◽  
Spectroscopy Study ◽  
Counter Ions ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene ◽  
Poly Acrylic Acid

A dielectric spectroscopy study on a polyelectrolyte in aqueous solutions, which contains hydrophobic groups in part of the side chains poly(acrylic acid)-graft-poly(ethylene oxide)-graft-dodecyl (PAA-g-PEO-g-dodecyl) is reported.

scholarly journals Effect of Environmental Humidity on the Ionic Transport of Poly(ethylene Oxide) Thin Films by Local Dielectric Spectroscopy

2019 ◽  
Author(s):  
Paul Markus ◽  
Daniel E Martínez-Tong ◽  
Georg Papastavrou ◽  
Angel Alegria
Keyword(s):  
Thin Films ◽  
Ethylene Oxide ◽  
Amorphous Phase ◽  
Dielectric Spectroscopy ◽  
Ionic Transport ◽  
Oxide Thin Films ◽  
Environmental Humidity ◽  
Dielectric Contrast ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene

<div><div><div><p>The effect of humidity on the ionic transport in the amorphous phase of poly(ethylene oxide) thin films has been studied by via local dielectric spectroscopy. We explored a controlled humidity range between 15 %RH and 50 %RH. AFM-based local dielectric imaging allowed to obtain simultaneously the thin films topography and the corresponding dielectric contrast maps. No humidity effect on the film topography was observed whereas large variation of the dielectric signal could be detected. In addition, we observed a clear dielectric contrast in different locations on the thin film surface. At selected regions with high contrast in the dielectric maps, we performed nanoDielectric Spectroscopy (nDS) measurements covering the frequency range from 10 Hz to 100 kHz. By modeling these spectroscopy results, we quantified the conductivity of the amorphous phase of the semicrystalline poly(ethylene oxide) films. The crystalline fraction of the PEO thin films was extracted and found to be about 36%, independently of humidity. However, the average conductivity increased drastically from 2×10-10 to 5×10-9 S/cm, by changing environmental humidity in the explore %RH range.</p></div></div></div>

scholarly journals Effect of environmental humidity on the ionic transport of poly(ethylene oxide) thin films, investigated by local dielectric spectroscopy

Soft Matter ◽  
2020 ◽  
Vol 16 (13) ◽  
pp. 3203-3208 ◽  
Author(s):  
Paul Markus ◽  
Daniel E. Martínez-Tong ◽  
Georg Papastavrou ◽  
Angel Alegria
Keyword(s):  
Thin Films ◽  
Relative Humidity ◽  
Ethylene Oxide ◽  
Dielectric Spectroscopy ◽  
Ionic Transport ◽  
Oxide Thin Films ◽  
Environmental Humidity ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene

The laterally-resolved conductivity of PEO thin films increases with relative humidity, as determined by local dielectric spectroscopy: an AFM-based electrical technique.

Polymers under extreme two-dimensional confinement: Poly(ethylene oxide) in graphite oxide

Soft Matter ◽  
2011 ◽  
Vol 7 (16) ◽  
pp. 7173 ◽  
Author(s):  
Fabienne Barroso-Bujans ◽  
Felix Fernandez-Alonso ◽  
Silvina Cerveny ◽  
Stewart F. Parker ◽  
Angel Alegría ◽  
...  
Keyword(s):  
Ethylene Oxide ◽  
Graphite Oxide ◽  
Two Dimensional ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene

Synthesis of poly(ethylene oxide)-intercalated graphite oxide

Carbon ◽  
1996 ◽  
Vol 34 (5) ◽  
pp. 672-674 ◽  
Author(s):  
Y. Matsuo ◽  
K. Tahara ◽  
Y. Sugie
Keyword(s):  
Ethylene Oxide ◽  
Graphite Oxide ◽  
Intercalated Graphite ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene
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