The Role of Solvating 12-Crown-4 Plasticizer on Dielectric Constant and
The addition of 12C4 not only increases the static dielectric constant ( s) but also accelerates the ion rearrangement (α 2) and segmental motion (α) compared to the host ionomer. A physical model of electrode polarization is used to estimate number density of simultaneously conducting ions and their mobility.
The Role of Solvating 12-Crown-4 Plasticizer on Dielectric Constant and
A physical model of electrode polarization is used to estimate number density of simultaneously conducting ions and their mobility. The complex of 12C4 with lithium cation lowers the activation energy of simultaneously conducting ions, increasing the simultaneously conducting ion content by >3×.
The Role of Solvating 12-Crown-4 Plasticizer on Dielectric Constant and
The Role of Solvating 12-Crown-4 Plasticizer on Dielectric Constant and Ion Conduction of Poly(ethylene oxide) Single-Ion Conductors U Hyeok Choi1 and Ralph H. Colby*2 1Department of Polymer Engineering, Pukyong National University, Busan 48547, Korea 2Department of Materials Science and Engineering, Pennsylvania State University, University
Plasticized Single-Ion Polymer Conductors: Conductivity, Local and
The Role of Solvating 12-Crown-4 Plasticizer on Dielectric Constant and Ion Conduction of Poly (ethylene oxide) Single-Ion Conductors. Macromolecules 2017, 50 (14) , 5582-5591. https://doi.org/10.1021/acs.macromol.7b00467 Chengbin Huang, C. Travis Powell, Ye Sun, Ting Cai, and Lian Yu .
The Role of Solvating 12-Crown4 Plasticizer on Dielectric Constant and
The role of solvating plasticizer on lithium ion conduction is investigated for a poly(ethylene oxide)-based single-ion conductor, plasticized with 12 wt % 12-crown-4 (12C4). The addition of 12C4 not only increases the static dielectric constant (εs) but also accelerates the ion rearrangement (α2) and segmental motion (α) compared to the host ionomer. A physical model of electrode
- What happens if the dielectric constant of a plasticizer is higher?
- The higher value of the dielectric constant of the plasticizer in relation to that of the polymer (PEO) can result in the dissociation of ion aggregates formed at higher concentrations into free ions, which should result in an increase in the number of free mobile ions and hence conductivity.
- Why do plasticizers have a low viscosity?
- The low viscosity of plasticizer helps to increase the mobility of carriers and the lower melting temperature of plasticizers results in an increase in the amorphous content of plasticized polymer electrolytes, while the higher dielectric constant of plasticizer as compared to polymer (PEO) helps in the dissociation of ion aggregates.
- Why do we add plasticizer to polymer-salt complexes?
- The addition of plasticizer in general helps in increasing the amorphous content of polymer–salt complexes along with increasing the segmental mobility and lowering of Tg , , , , , , , , .
