Role of fumed silica on ion conduction and rheology in nanocomposite polymeric electrolytes

Polymer ◽  
2006 ◽  
Vol 47 (10) ◽  
pp. 3583-3590 ◽  
Author(s):  
Shahzada Ahmad ◽  
H.B. Bohidar ◽  
Sharif Ahmad ◽  
S.A. Agnihotry
Keyword(s):  
Fumed Silica ◽  
Ion Conduction ◽  
Polymeric Electrolytes

Building Ion-Conduction Highways in Polymeric Electrolytes by Manipulating Protein Configuration

2018 ◽  
Vol 10 (5) ◽  
pp. 4726-4736 ◽  
Author(s):  
Xuewei Fu ◽  
Chunhui Li ◽  
Yu Wang ◽  
Lucas Paul Kovatch ◽  
Louis Scudiero ◽  
...  
Keyword(s):  
Ion Conduction ◽  
Polymeric Electrolytes ◽  
Protein Configuration

Role of Associated Defects in Oxygen Ion Conduction and Surface Exchange Reaction for Epitaxial Samaria-Doped Ceria Thin Films as Catalytic Coatings

2016 ◽  
Vol 8 (23) ◽  
pp. 14613-14621 ◽  
Author(s):  
Nan Yang ◽  
Yanuo Shi ◽  
Sebastian Schweiger ◽  
Evgheni Strelcov ◽  
Alex Belianinov ◽  
...  
Keyword(s):  
Thin Films ◽  
Exchange Reaction ◽  
Doped Ceria ◽  
Ion Conduction ◽  
Surface Exchange ◽  
Oxygen Ion

Modification of DABA/BMI Composites by Silane Compound and Fumed SiO2

2012 ◽  
Vol 622-623 ◽  
pp. 1006-1013
Author(s):  
Nazakat Alia ◽  
Qiu Yu Zhang ◽  
Yin Wu ◽  
Ying Chen
Keyword(s):  
Electron Microscopy ◽  
Mechanical Properties ◽  
Scanning Electron Microscopy ◽  
Thermal Properties ◽  
Fumed Silica ◽  
Heat Stability ◽  
Nano Composite ◽  
Bending Modulus ◽  
Scanning Electron

In this present investigation, at first, Dially bisphenol A (DABA)/Bismaleimide (BMI) system was modified with gamma-aminopropyltriethoxy silane (KH550). The objective of the work was to study the effect of addition of various weight percentages of KH550 into BMI/DABA composites on its mechanical properties, thermal properties and morphorogy. Further modification was carried out with fumed silica. The role of KH550 was discussed in these composites prepared. Nancomposites were characterized by differential DSC, TGA, and scanning electron microscopy SEM. TGA results confirmed that the heat stability of the nano composite DABA/BMI/KH550 is improved compared with DABA/BMI system. SEM results indicated that the fumed silica dispersed homogeneously in DABA/BMI/KH550 matrix on nanoscale. Mechanical results shows that newly developed system has improved bending modulus to 4.0GPa, while with incorporation of fumed SiO2 impacted strength also improved to 20.60kJ/m2.

scholarly journals Atomistic basis of opening and conduction in mammalian inward rectifier potassium (Kir2.2) channels

2019 ◽  
Author(s):  
Eva-Maria Zangerl-Plessl ◽  
Sun-Joo Lee ◽  
Grigory Maksaev ◽  
Harald Bernsteiner ◽  
Feifei Ren ◽  
...  
Keyword(s):  
Md Simulations ◽  
Inward Rectifier ◽  
Ion Conduction ◽  
Kir Channel ◽  
Channel Opening ◽  
Spontaneous Wetting ◽  
Pore Lining ◽  
Crossing Point ◽  
Gate Region

Potassium ion conduction through open potassium channels is essential to control of membrane potentials in all cells. To elucidate the open conformation and hence the mechanism of K+ ion conduction in the classical inward rectifier Kir2.2, we introduced a negative charge (G178D) at the crossing point of the inner helix bundle (HBC), the location of ligand-dependent gating. This ‘forced open’ mutation generated channels that were active even in the complete absence of phosphoinositol-4,5-bisphosphate (PIP2), an otherwise essential ligand for Kir channel opening. Crystal structures were obtained at a resolution of 3.6 Å without PIP2 bound, or 2.8 Å in complex with PIP2. The latter revealed a slight widening at the HBC, through backbone movement. Molecular dynamics (MD) simulations showed that subsequent spontaneous wetting of the pore through the HBC gate region allowed K+ ion movement across the HBC and conduction through the channel. Further simulations reveal atomistic details of the opening process and highlight the role of pore lining acidic residues in K+ conduction through Kir2 channels.

The Role of TiO2 Particles on the Ion Conduction Mechanism in Polyether Electrolyte Having Cyanoethoxy Sidechain

2020 ◽  
Vol MA2020-02 (4) ◽  
pp. 707-707
Author(s):  
Tasuku Hitaka ◽  
Ryutaro Isobe ◽  
Riho Matsuoka ◽  
Koki Yamada ◽  
Ryansu Sai ◽  
...  
Keyword(s):  
Conduction Mechanism ◽  
Ion Conduction ◽  
Tio2 Particles ◽  
Ion Conduction Mechanism
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