Effect of ZnO Nanoparticles on the Structure and Ionic Relaxation of Poly(ethylene oxide)-LiI Polymer Electrolyte Nanocomposites

2008 ◽  
Vol 8 (4) ◽  
pp. 1922-1926 ◽  
Author(s):  
S. Bhattacharya ◽  
A. Ghosh
Keyword(s):  
Electron Microscopy ◽  
Ethylene Oxide ◽  
Polymer Electrolyte ◽  
Zno Nanoparticles ◽  
Structural Modification ◽  
X Ray Diffraction ◽  
Transmission Electron ◽  
Poly Ethylene Oxide ◽  
Nanocomposite Electrolyte ◽  
Poly Ethylene

The effect of ZnO nanoparticles on the structure and ionic relaxation of LiI salt doped poly(ethylene oxide) (PEO) polymer electrolytes has been investigated. X-ray diffraction, high resolution transmission electron microscopy and field emission scanning electron microscopy show that ZnO nanoparticles dispersed in the PEO-LiI polymer electrolyte reduce the crystallinity of PEO and increase relative smoothness of the surface morphology of the nanocomposite electrolyte. The electrical conductivity of the nanocomposites is found to increase due to incorporation of ZnO nanoparticles. We have shown that the structural modification due to insertion of ZnO nanoparticles results in the enhancement of the mobility i.e., the hopping rate of mobile Li+ ions and hence the ionic conductivity of PEO-LiI-ZnO nanocomposite electrolyte.

scholarly journals Study Structure and Properties of Nanocomposite Material Based on Unsaturated Polyester with Clay Modified by Poly(ethylene oxide)

2012 ◽  
Vol 2012 ◽  
pp. 1-5 ◽  
Author(s):  
Tran Duy Thanh ◽  
Nguyen Dang Mao ◽  
Nguyen Thi Kim Ngan ◽  
Ha Thuc Chi Nhan ◽  
Ha Thuc Huy ◽  
...  
Keyword(s):  
Ethylene Oxide ◽  
Polymer Matrix ◽  
Unsaturated Polyester ◽  
X Ray Diffraction ◽  
X Ray ◽  
Transmission Electron ◽  
Poly Ethylene Oxide ◽  
Hydrophobic Nature ◽  
Poly Ethylene ◽  
Alkyl Ammonium

In recent years, polymer clay nanocomposites have been attracting considerable interests in polymers science because of their advantages. There are many scientists who researched about this kind of material and demonstrated that when polymer matrix was added to little weight of clay, properties were enhanced considerably. Because clay is a hydrophilic substance so it is difficult to use as filler in polymer matrix having hydrophobic nature, so clay needs to be modified to become compatible with polymer. In this study, poly(ethylene oxide) was used as a new modifier for clay to replace some traditional ionic surfactants such as primary, secondary, tertiary, and quaternary alkyl ammonium or alkylphosphonium cations having the following disadvantages: disintegrate at high temperature, catalyze polymer degradation, and make nanoproducts colorific, and so forth. In order to evaluate modifying effect of poly(ethylene oxide), modified clay products were characterize d by X-ray spectrum. Then organoclay was used to prepare nanocomposite based on unsaturated polyester. Morphology and properties of nanocomposites were measure d by X-ray diffraction, transmission electron microscopy, tensile strength, and thermal stability. The results showed that clay galleries changed to intercalated state in the nanocomposites. Properties of nanocomposites were improved a lot when the loading of the organoclay was used at 1 phr.

High-genus multicompartment vesicles evolved from large compound micelles

2021 ◽  
Author(s):  
Sha Lin ◽  
Fangyingkai Wang ◽  
Jianzhong Du
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Ethylene Oxide ◽  
Fluorescence Spectroscopy ◽  
Formation Process ◽  
High Genus ◽  
Transmission Electron ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene ◽  
Large Compound

We report a high-genus multicompartment vesicle (HGMV) that is self-assembled from poly(ethylene oxide)-block-poly[4-azophenyl-(2-carbamoyloxymethyl)ethyl methacrylate] (PEO43-b-PACEMA10). The formation process of these HGMVs was investigated by transmission electron microscopy (TEM), fluorescence spectroscopy,...

scholarly journals STRUCTURE AND PROPERTIES OF NANOCOMPOSITE MATERIAL FROM UNSATURATED POLYESTER AND POLY (ETHYLENE OXIDE) – MODIFIED CLAY

2012 ◽  
Vol 15 (2) ◽  
pp. 35-44
Author(s):  
Thanh Duy Tran ◽  
Ngan Thi Kim Nguyen ◽  
Mao Dang Nguyen ◽  
Tai Tan Dang
Keyword(s):  
Ethylene Oxide ◽  
Unsaturated Polyester ◽  
X Ray Diffraction ◽  
X Ray ◽  
Matrix Polymer ◽  
Modified Clay ◽  
Transmission Electron ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene ◽  
Alkyl Ammonium

In recent years, polymer clay nanocomposites are attracting considerable interests in polymers science because of many advantages. There are many scientists having researched about this kind of material and demonstrated that when matrix polymer is added little weight of clay, properties of material is enhanced considerably. Because clay is a hydrophilic substance so it is difficult to use as filler in matrix polymer having hydrophobic nature, so clay needs to be modified to become more hydrophobic. In this study, Poly (Ethylene Oxide) was used as a new modifier for clay to replace some traditional ionic surfactants such as primary, secondary, tertiary, and quaternary alkyl ammonium or alkylphosphonium cations having disadvantages: disintegrate at high temperature, catalyze polymer degradation, and make nano-products colorific…. In order to evaluate modifying effect of Poly (Ethylene Oxide), modified clay products were characterized by X-ray spectrum. And then organoclay was used to prepare nanocomposite based on Unsaturated Polyester. Morphology and properties of nanocomposites were measured by X-ray diffraction, Transmission electron microscopy, tensile strength and thermal property. The results show that clay galleries changed to intercalated or exfoliated state in the nanocomposites. Properties of nanocomposites were (significantly improved) improved a lots when the loading of the organoclay was used at 1phr.

scholarly journals pH-Dependence of the morphology of micelles formed by poly(2-vinylpyridine)-block-poly(ethylene oxide) copolymers in water

e-Polymers ◽  
2002 ◽  
Vol 2 (1) ◽  
Author(s):  
Jean-François Gohy ◽  
Sandrine Mores ◽  
Sunil K. Varshney ◽  
Jian-Xin Zhang ◽  
Robert Jérôme
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Ethylene Oxide ◽  
Ph Dependence ◽  
Minor Component ◽  
Transmission Electron ◽  
Poly Ethylene Oxide ◽  
Spherical Micelles ◽  
Poly Ethylene ◽  
Ph Range

AbstractThe morphology of micelles formed by two poly(2-vinylpyridine)-blockpoly( ethylene oxide) (P2VP-b-PEO) copolymers has been studied in phosphatebuffered water by dynamic light scattering and transmission electron microscopy. Spherical micelles are observed when the P2VP block is the minor component of the diblock copolymer. When P2VP dominates the composition, transition from spheres-to-rods-to-vesicles takes place in a narrow pH range that straddles the pKa of P2VP. This transition is controlled by the degree of protonation of the P2VP blocks. At high pH, the copolymer precipitates from the solution.

Characteristics of a poly(ethylene oxide)-LiBF4 polymer electrolyte

1988 ◽  
Vol 18 (3) ◽  
pp. 401-404 ◽  
Author(s):  
F. Croce ◽  
R. Curini ◽  
S. Pantaloni ◽  
S. Passerini ◽  
A. Selvaggi ◽  
...  
Keyword(s):  
Ethylene Oxide ◽  
Polymer Electrolyte ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene
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