Citation: Hong-Peng Han, Yi-Hu Song, Qiang Zheng. Rheological and Interfacial Properties of Colloidal Electrolytes[J]. Chinese Journal of Polymer Science, ;2019, 37(10): 1039-1044. doi: 10.1007/s10118-019-2334-9 shu

Rheological and Interfacial Properties of Colloidal Electrolytes

Ministry of Education Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China

Corresponding author: Yi-Hu Song, s_yh0411@zju.edu.cn Qiang Zheng, zhengqiang@zju.edu.cn
Received Date: 20 June 2019
Revised Date: 11 July 2019
Available Online: 21 August 2019

Electric conductivity and rheological responses of colloidal electrolytes consisting of lithium bis(trifluoromethanesulfon) imide, polyethylene glycol (PEG) oligomer, and fumed silica have been investigated. Incorporating silica could improve ionic conductivity of the electrolytes at the same lithium/oxygen ratios. The colloidal electrolytes demonstrate a sol to gel transition with increasing silica content while they exhibit shear thickening behaviors during steady flow at intermediate range of strain rate. The presence of lithium salt, on the one hand, could lower the crystallinity of PEG or forbid the crystallization and on the other hand, interferes the chain adsorption on the surface of silica. Furthermore, lithium salt strongly retards the segmental relaxation of PEG in the colloidal electrolytes.
- Colloidal electrolytes,
- Rheology,
- Silica,
- Lithium salt
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