Dynamic Heterogeneity and Phase Separation Kinetics in Miscible Poly(vinyl acetate)/Poly(ethylene oxide) Blends by Local Dielectric Spectroscopy

2013 ◽  
Vol 46 (18) ◽  
pp. 7458-7464 ◽  
Author(s):  
Tomas P. Corrales ◽  
David Laroze ◽  
George Zardalidis ◽  
George Floudas ◽  
Hans-Jürgen Butt ◽  
...  
Keyword(s):  
Phase Separation ◽  
Ethylene Oxide ◽  
Vinyl Acetate ◽  
Dielectric Spectroscopy ◽  
Dynamic Heterogeneity ◽  
Phase Separation Kinetics ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene ◽  
Separation Kinetics

Phase separation kinetics and rheological behavior of Poly(ethylene oxide)/ionic liquid mixtures with large dynamic asymmetry

Polymer ◽  
2017 ◽  
Vol 123 ◽  
pp. 290-300 ◽  
Author(s):  
Huan Luo ◽  
Zhilin Xiao ◽  
Yunlei Chen ◽  
Yanhua Niu ◽  
Guangxian Li
Keyword(s):  
Ionic Liquid ◽  
Phase Separation ◽  
Ethylene Oxide ◽  
Rheological Behavior ◽  
Liquid Mixtures ◽  
Phase Separation Kinetics ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene ◽  
Separation Kinetics

Pressure Effects on the Dynamic Heterogeneity of Miscible Poly(vinyl acetate)/Poly(ethylene oxide) Blends

2012 ◽  
Vol 45 (15) ◽  
pp. 6272-6280 ◽  
Author(s):  
George Zardalidis ◽  
George Floudas
Keyword(s):  
Ethylene Oxide ◽  
Vinyl Acetate ◽  
Pressure Effects ◽  
Dynamic Heterogeneity ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene

Dynamic heterogeneity in a miscible poly(vinyl acetate)/poly(ethylene oxide) blend

2006 ◽  
Vol 352 (42-49) ◽  
pp. 5042-5049 ◽  
Author(s):  
Osamu Urakawa ◽  
Takahiro Ujii ◽  
Keiichiro Adachi
Keyword(s):  
Ethylene Oxide ◽  
Vinyl Acetate ◽  
Dynamic Heterogeneity ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene

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>

A surface light scattering study of poly(ethylene oxide) and poly(vinyl acetate) at the air/water and heptane/water interfaces

1987 ◽  
Vol 20 (11) ◽  
pp. 2732-2739 ◽  
Author(s):  
Bryan B. Sauer ◽  
Masami Kawaguchi ◽  
Hyuk Yu
Keyword(s):  
Light Scattering ◽  
Ethylene Oxide ◽  
Vinyl Acetate ◽  
Surface Light Scattering ◽  
Poly Ethylene Oxide ◽  
Scattering Study ◽  
Poly Ethylene

Miscibility of poly(ethylene oxide)/poly(ethylene-co-vinyl acetate) blends: simulation of phase diagram

Polymer ◽  
1991 ◽  
Vol 32 (8) ◽  
pp. 1461-1467 ◽  
Author(s):  
S. Cimmino ◽  
E. Martuscelli ◽  
M. Saviano ◽  
C. Silvestre
Keyword(s):  
Phase Diagram ◽  
Ethylene Oxide ◽  
Vinyl Acetate ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene

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.

Effect of Halloysite Nanotubes on the Rheological and Phase Separation Behaviors in a Poly(ethylene oxide)/Ionic Liquid Mixture

2020 ◽  
Vol 221 (14) ◽  
pp. 2000108
Author(s):  
Huan Luo ◽  
Gang Liu ◽  
Yunlei Chen ◽  
Yanhua Niu ◽  
Guangxian Li
Keyword(s):  
Ionic Liquid ◽  
Phase Separation ◽  
Ethylene Oxide ◽  
Liquid Mixture ◽  
Halloysite Nanotubes ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene

scholarly journals Microstructure and Mechanical/Elastic Performance of Biobased Poly (Butylene Furanoate)–Block–Poly (Ethylene Oxide) Copolymers: Effect of the Flexible Segment Length

Polymers ◽  
2020 ◽  
Vol 12 (2) ◽  
pp. 271 ◽  
Author(s):  
Magdalena Kwiatkowska ◽  
Inez Kowalczyk ◽  
Konrad Kwiatkowski ◽  
Agata Zubkiewicz
Keyword(s):  
Molecular Weight ◽  
Phase Separation ◽  
Ethylene Oxide ◽  
Mechanical Performance ◽  
Elastic Recovery ◽  
Segment Length ◽  
Poly Ethylene Oxide ◽  
Injection Molded ◽  
Poly Ethylene ◽  
Flexible Segment

The aim of this paper is to extend knowledge on biobased poly(butylene furanoate)–block–poly (ethylene oxide) (PBF-b-PEO) copolymers’ performance by studying the effect of the PEO segment’s molecular weight on the microstructure and materials behavior. As crystallization ability of PEO depends on its molecular weight, the idea was to use two PEO segment lengths, expecting that the longer one would be able to crystallize affecting the phase separation in copolymers, thus affecting their mechanical performance, including elasticity. Two series of PBF-block-PEOs with the PEO segments of 1000 and 2000 g/mol and different PBF/PEO segment ratios were synthesized by polycondensation in melt, injection molded to confirm their processability, and subjected to characterization by NMR, FTIR, DSC, DMTA, WAXS, TGA, and mechanical parameters. Indeed, the PEO2000 segment not only supported the crystallization of the PBF segments in copolymers, but at contents at least 50 wt % is getting crystallizable in the low temperature range, which results in the microstructure development and affects the mechanical properties. While the improvement in the phase separation slightly reduces the copolymers’ ability to deformation, it is beneficial for the elastic recovery of the materials. The investigations were performed on the injection molded samples reflecting the macroscopic properties of the bulk materials.

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