Silica nanoparticles densely grafted with PEO for ionomer plasticization

RSC Advances ◽  
2015 ◽  
Vol 5 (25) ◽  
pp. 19570-19580 ◽  
Author(s):  
Michael V. O'Reilly ◽  
Karen I. Winey
Keyword(s):  
Ionic Conductivity ◽  
Temperature Dependence ◽  
Silica Nanoparticles ◽  
Grafted Nanoparticles

PEO-grafted nanoparticles and hydroxylated nanoparticles demonstrate different ionic conductivity–viscosity temperature dependence in nanocomposite ionomers.

Temperature dependence of O2 singlet photoluminescence in silica nanoparticles

2013 ◽  
Vol 379 ◽  
pp. 220-223 ◽  
Author(s):  
S. Agnello ◽  
L. Vaccaro ◽  
M. Cannas ◽  
K. Kajihara
Keyword(s):  
Temperature Dependence ◽  
Silica Nanoparticles

Ionic Conductivity of Li2ZnTi3O8 Single Crystal

2011 ◽  
Vol 497 ◽  
pp. 26-30 ◽  
Author(s):  
Shinichi Furusawa ◽  
Hiroshi Ochiai ◽  
Khoji Murayama
Keyword(s):  
Ionic Conductivity ◽  
Single Crystal ◽  
Temperature Dependence ◽  
Single Crystals ◽  
Powder Diffraction ◽  
Floating Zone ◽  
Zinc Titanate ◽  
X Ray ◽  
Temperature Range ◽  
First Time

Single crystals of lithium zinc titanate (Li2ZnTi3O8) were grown in a double-mirror type optical floating-zone furnace for the first time. Single crystals were characterized by X-ray powder diffraction and Laue measurements. The ionic conductivity of the single crystals was measured in the temperature range of 400–700 K. Below 600 K, the ionic conductivity of the single crystal is one to two orders of magnitude higher than that of polycrystalline Li2ZnTi3O8. In the temperature range of 550–600 K, the temperature dependence of the ionic conductivity shows non-Arrhenius behaviour.

Temperature Dependence of Ionic Conductivity of Ceria Electrolyte at Concentrated Range of Multiple Doping

2013 ◽  
Vol 96 (9) ◽  
pp. 2846-2851 ◽  
Author(s):  
Snigdha Panigrahi ◽  
Ramesh Chandra Biswal ◽  
Shahid Anwar ◽  
Laxmidhar Besra ◽  
Sarama Bhattacharjee
Keyword(s):  
Ionic Conductivity ◽  
Temperature Dependence ◽  
Ceria Electrolyte

TEM Observation and Ionic Conductivity Study of Li2SiO3 Thin-Film on Sapphire Substrate

2013 ◽  
Vol 596 ◽  
pp. 15-20 ◽  
Author(s):  
Shinichi Furusawa ◽  
Takao Tsurui ◽  
Kouhei Shimizu
Keyword(s):  
Thin Film ◽  
Electron Microscopy ◽  
Ionic Conductivity ◽  
Temperature Dependence ◽  
Sapphire Substrate ◽  
Pulsed Laser ◽  
Laser Deposition ◽  
Temperature Range ◽  
Transmission Electron ◽  
Lithium Ionic Conductor

Thin-film samples of the lithium ionic conductor Li2SiO3(LSO) were deposited on an A-plane sapphire substrate via the pulsed laser deposition (PLD) method, and the irreversible temperature dependence of the ionic conductivity in the thin-film samples was studied. Via transmission electron microscopy (TEM) observations of annealed LSO thin-film, it was found that the as-prepared LSO thin-film was amorphous over the temperature rangeT490 K, and that nanocrystals existed in the annealed LSO thin-film in the temperature rangeT550 K. Further more, it was clarified the irreversible temperature dependence of the ionic conductivity is due to the generation of nanocrystals.

Ionic Conductivity in the poly(propylene glycol)-poly(methyl methacrylate)-LiCF3SO3 System

1989 ◽  
Vol 44 (12) ◽  
pp. 1231-1233
Author(s):  
P. A. Svantesson ◽  
I. Albinsson ◽  
B.-E. Mellander
Keyword(s):  
Ionic Conductivity ◽  
Ternary System ◽  
Methyl Methacrylate ◽  
Temperature Dependence ◽  
Propylene Glycol ◽  
Pressure Sensitive Adhesive ◽  
Poly Methyl Methacrylate ◽  
Pressure Sensitive ◽  
Poly Propylene

Abstract The temperature dependence of the ionic conductivity in the PPG-rich part of the ternary system poly(propylene glycol)-poly(methyl methacrylate)-LiCF3SO3 has been investigated. The highest conductivity values, 3 x 10-5 (ohm cm)-1 at 31 °C and 4 × 10-4 (ohm cm)-1 at 77 C, were obtained for samples which had the properties of a pressure sensitive adhesive. The temperature dependence of the ionic conductivity could be well described by the Vogel-Tammann-Fulcher equation.

scholarly journals A Model for Non-Arrhenius Ionic Conductivity

Nanomaterials ◽  
2019 ◽  
Vol 9 (6) ◽  
pp. 911
Author(s):  
Masaru Aniya ◽  
Masahiro Ikeda
Keyword(s):  
Ionic Conductivity ◽  
Size Effect ◽  
Temperature Dependence ◽  
Solid Electrolytes ◽  
Methyl Ethyl ◽  
Arrhenius Behavior ◽  
Energy Fluctuation ◽  
Fundamental Interest ◽  
Mobile Species ◽  
Methyl Ethyl Ether

Non-Arrhenius ionic conductivity is observed in various solid electrolytes. The behavior is intriguing, because it limits the magnitude of ionic conductivity at high temperatures. Understanding the nature of this behavior is of fundamental interest and deserves attention. In the present study, the temperature dependence of the ionic conductivity in solids and liquids is analyzed using the Bond Strength–Coordination Number Fluctuation (BSCNF) model developed by ourselves. It is shown that our model describes well the temperature dependence of ionic conductivity that varies from Arrhenius to non-Arrhenius-type behavior. According to our model, the non-Arrhenius behavior is controlled by the degree of binding energy fluctuation between the mobile species and the surroundings. A brief discussion on a possible size effect in non-Arrhenius behavior is also given. Within the available data, the BSCNF model suggests that the size effect in the degree of the non-Arrhenius mass transport behavior in a poly (methyl ethyl ether)/polystyrene (PVME/PS) blend is different from that in a-polystyrene and polyamide copolymer PA66/6I.

Conformational change and suppression of the Θ-temperature for solutions of polymer-grafted nanoparticles

Soft Matter ◽  
2018 ◽  
Vol 14 (29) ◽  
pp. 6102-6108 ◽  
Author(s):  
Katrina Irene S. Mongcopa ◽  
Ryan Poling-Skutvik ◽  
Rana Ashkar ◽  
Paul Butler ◽  
Ramanan Krishnamoorti
Keyword(s):  
Neutron Scattering ◽  
Silica Nanoparticles ◽  
Conformational Change ◽  
Small Angle ◽  
Small Angle Neutron Scattering ◽  
Grafted Nanoparticles

We determine the conformational change of polystyrene chains grafted to silica nanoparticles dispersed in deuterated cyclohexane using small-angle neutron scattering.

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