scholarly journals Effects of repeat unit charge density on the physical and electrochemical properties of novel heterocationic poly(ionic liquid)s

2021 ◽  
Vol 45 (1) ◽  
pp. 53-65
Author(s):  
Merlin Cotessat ◽  
Dimitri Flachard ◽  
Daniil Nosov ◽  
Elena I. Lozinskaya ◽  
Denis O. Ponkratov ◽  
...  

The higher the charge density of PILs the higher their Tg and the lower their conductivity; the best conductivity (1.8 × 10−5 S cm−1 at 25 °C): PILs with triazolium cations; the best cathodic stability (−0.4 V vs. Li+/Li at 70 °C): PILs with mixed type cations.

2016 ◽  
Vol 8 (42) ◽  
pp. 28316-28324 ◽  
Author(s):  
Van Bui-Thi-Tuyet ◽  
Gaëlle Trippé-Allard ◽  
Jalal Ghilane ◽  
Hyacinthe Randriamahazaka

2016 ◽  
Vol 4 (3) ◽  
pp. 1112-1118 ◽  
Author(s):  
Tao Zhou ◽  
Xinpei Gao ◽  
Bin Dong ◽  
Na Sun ◽  
Liqiang Zheng

Flexible poly(ionic liquid) hydrogels with polymerized anions and cations exhibit superior electrochemical properties, which can remain stable under different deformations.


2021 ◽  
Author(s):  
Zhangbin Guan ◽  
Bingyu Wang ◽  
Yan Wang ◽  
Jing Chen ◽  
Chunyang Bao ◽  
...  

Poly(ionic liquid)s (PILs) are widely used to improve the anti-fouling ability of membranes due to their high charge density and excellent hydrophilicity. However, it is difficult to eradicate the irreversible...


2014 ◽  
Vol 13 (8) ◽  
pp. 1987-1995 ◽  
Author(s):  
Liviu-Virgil Costea ◽  
Gunter Fafilek ◽  
Hermann Kronberger

Author(s):  
Wenxin Wei ◽  
Guifeng Ma ◽  
Hongtao Wang ◽  
Jun Li

Objective: A new poly(ionic liquid)(PIL), poly(p-vinylbenzyltriphenylphosphine hexafluorophosphate) (P[VBTPP][PF6]), was synthesized by quaternization, anion exchange reaction, and free radical polymerization. Then a series of the PIL were synthesized at different conditions. Methods: The specific heat capacity, glass-transition temperature and melting temperature of the synthesized PILs were measured by differential scanning calorimeter. The thermal conductivities of the PILs were measured by the laser flash analysis method. Results: Results showed that, under optimized synthesis conditions, P[VBTPP][PF6] as the thermal insulator had a high glass-transition temperature of 210.1°C, high melting point of 421.6°C, and a low thermal conductivity of 0.0920 W m-1 K-1 at 40.0°C (it was 0.105 W m-1 K-1 even at 180.0°C). The foamed sample exhibited much low thermal conductivity λ=0.0340 W m-1 K-1 at room temperature, which was comparable to a commercial polyurethane thermal insulating material although the latter had a much lower density. Conclusion: In addition, mixing the P[VBTPP][PF6] sample into polypropylene could obviously increase the Oxygen Index, revealing its efficient flame resistance. Therefore, P[VBTPP][PF6] is a potential thermal insulating material.


2021 ◽  
Vol 6 (15) ◽  
pp. 3795-3801
Author(s):  
Radostina Kalinova ◽  
Ivaylo Dimitrov ◽  
Christo Novakov ◽  
Svetlana Veleva ◽  
Antonia Stoyanova

Nanoscale ◽  
2021 ◽  
Author(s):  
Ning Gao ◽  
Kang Zhou ◽  
Kai Feng ◽  
Wanlin Zhang ◽  
Jiecheng Cui ◽  
...  

Micellar and vesicular structures capable of sensing and reporting the chemical environment as well as facilely introducing user-defined functions make a vital contribution to constructing versatile compartmentalized systems. Herein, combing...


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