Controlling the morphology of polybutadiene–poly(ethylene oxide) diblock copolymers in bulk and the orientation in thin films by attachment of alkyl side chains

Polymer ◽  
2008 ◽  
Vol 49 (16) ◽  
pp. 3470-3476 ◽  
Author(s):  
A. Levent Demirel ◽  
Helmut Schlaad
Keyword(s):  
Thin Films ◽  
Ethylene Oxide ◽  
Diblock Copolymers ◽  
Side Chains ◽  
Alkyl Side Chains ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene

scholarly journals Effects of Temperature on Chaotropic Anion-Induced Shape Transitions of Star Molecular Bottlebrushes with Heterografted Poly(ethylene oxide) and Poly(N,N-dialkylaminoethyl methacrylate) Side Chains in Acidic Water

Soft Matter ◽  
2021 ◽  
Author(s):  
Evan M. Lewoczko ◽  
Michael T. Kelly ◽  
Ethan Kent ◽  
Bin Zhao
Keyword(s):  
Ethylene Oxide ◽  
Side Chains ◽  
Acidic Water ◽  
Poly Ethylene Oxide ◽  
Effects Of Temperature ◽  
Poly Ethylene ◽  
Shape Transitions

This article reports a study of the effects of temperature on chaotropic anion (CA)-induced star-globule shape transitions in acidic water of three-arm star bottlebrushes composed of heterografted poly(ethylene oxide) (PEO)...

Composition and properties of complexes between anionic liposomes and diblock copolymers with cationic and poly(ethylene oxide) blocks

2017 ◽  
Vol 66 (11) ◽  
pp. 1669-1674 ◽  
Author(s):  
Oleg V Ivashkov ◽  
Andrey V Sybachin ◽  
Anna A Efimova ◽  
Viktor N Orlov ◽  
Dmitry V Pergushov ◽  
...  
Keyword(s):  
Ethylene Oxide ◽  
Diblock Copolymers ◽  
Anionic Liposomes ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene

scholarly journals Study of poly(ethylene oxide) electrolyte with polyurethane/sulfonate side chains

2001 ◽  
Vol 82 (3) ◽  
pp. 541-545 ◽  
Author(s):  
Xinling Wang ◽  
Bin Fang ◽  
Lei Wang ◽  
Xiaozhen Tang ◽  
Feng-Chih Chang
Keyword(s):  
Ethylene Oxide ◽  
Side Chains ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene ◽  
Oxide Electrolyte

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>

Synthesis, characterization and association behavior of linear-dendritic amphiphilic diblock copolymers based on poly(ethylene oxide) and a dendron derived from 2,2′-bis(hydroxymethyl)propionic acid

2015 ◽  
Vol 6 (12) ◽  
pp. 2274-2282 ◽  
Author(s):  
Weiwei Zhang ◽  
Weiwei Jiang ◽  
Delong Zhang ◽  
Guangyue Bai ◽  
Pengxiao Lou ◽  
...  
Keyword(s):  
Block Copolymers ◽  
Ethylene Oxide ◽  
Propionic Acid ◽  
Diblock Copolymers ◽  
Association Behavior ◽  
Poly Ethylene Oxide ◽  
Amphiphilic Diblock Copolymers ◽  
Poly Ethylene

Two new amphiphilic linear-dendritic block copolymers have been synthesized and characterized. And their association behaviors have also been studied.

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