Synthesis and properties of tetra-alkyl-dimethylguanidinium salts as a potential new generation of ionic liquids

2003 ◽  
Vol 5 (3) ◽  
pp. 347-352 ◽  
Author(s):  
Nuno M. M. Mateus ◽  
Luís C. Branco ◽  
Nuno M. T. Lourenço ◽  
Carlos A. M. Afonso
Keyword(s):  
2019 ◽  
Author(s):  
Sutton E. Wheelis ◽  
Claudia C. Biguetti ◽  
Shruti Natarajan ◽  
Lidia Guida ◽  
Brian Hedden ◽  
...  

Polymers ◽  
2021 ◽  
Vol 13 (9) ◽  
pp. 1512
Author(s):  
Baris Demir ◽  
Gabriel Perli ◽  
Kit-ying Chan ◽  
Jannick Duchet-Rumeau ◽  
Sébastien Livi

Recently, a new generation of polymerised ionic liquids with high thermal stability and good mechanical performances has been designed through novel and versatile cycloaliphatic epoxy-functionalised ionic liquids (CEILs). From these first promising results and unexplored chemical structures in terms of final properties of the PILs, a computational approach based on molecular dynamics simulations has been developed to generate polymer models and predict the thermo–mechanical properties (e.g., glass transition temperature and Young’s modulus) of experimentally investigated CEILs for producing multi-functional polymer materials. Here, a completely reproducible and reliable computational protocol is provided to design, test and tune poly(ionic liquids) based on epoxidised ionic liquid monomers for future multi-functional thermoset polymers.


e-Polymers ◽  
2018 ◽  
Vol 18 (5) ◽  
pp. 423-431 ◽  
Author(s):  
Xiaoqian Zhang ◽  
Wenli Guo ◽  
Yibo Wu ◽  
Yuwei Shang ◽  
Shuxin Li ◽  
...  

AbstractPoly(isobutylene-co-p-methylstyrene) (IB/p-MeSt) random copolymer is a new generation of polyisobutylene-based elastomer. The cationic copolymerization of IB with p-MeSt was thoroughly examined by using various initiating systems in [Hmim][NTf2] at −30°C. The effects of initiating systems and monomer feed ratio on the monomer conversion, molecular weight and copolymer composition are discussed. The polymers were characterized by 1H-nuclear magnetic resonance (NMR), Fourier transform infrared (FTIR) spectroscopy and matrix-assisted laser desorption/ionization-time-of-flight-mass spectroscopy (MALDI-TOF-MS) to determine their chemical composition and molecular structure. The results show that high polarity, high viscosity and ionic environment of ionic liquids (ILs) influenced the copolymerization. The corresponding mechanism of cationic copolymerization in ILs is also proposed.


ChemInform ◽  
2005 ◽  
Vol 36 (50) ◽  
Author(s):  
Guo-hong Tao ◽  
Ling He ◽  
Ning Sun ◽  
Yuan Kou

2016 ◽  
Vol 61 (2) ◽  
pp. 1169-1174 ◽  
Author(s):  
M. Madej ◽  
D. Ozimina ◽  
J. Kasińska ◽  
J. Hawlena

Abstract The results from the tests on tribological a-C:H diamond coatings deposited by PACVD (plasma assisted chemical vapour deposition) on 100Cr6 steel components are presented in this work. Mechanical properties - nanohardness and Young’s modulus - were assessed by instrumented indentation. Tribological tests were conducted with T-01M tester in a ball-on-disc test under dry and boundary friction conditions. Selected ionic liquids - synthetic new generation lubricants - were used for lubrication. The results from the experiments indicate that diamond-like coatings improved tribological characteristics of the friction pairs tested, with the ionic liquids intensifying this effect.


ChemSusChem ◽  
2021 ◽  
Author(s):  
Xian Suo ◽  
Zhenzhen Yang ◽  
Yuqing Fu ◽  
Chi-Linh Do-Thanh ◽  
Dmitry Maltsev ◽  
...  

MRS Advances ◽  
2018 ◽  
Vol 3 (1-2) ◽  
pp. 79-84 ◽  
Author(s):  
Paolo Bondavalli ◽  
Gregory Pognon ◽  
Elias Koumoulos ◽  
Costas Charitidis

ABSTRACTThis contribution deals with the fabrication of a new generation of supercapacitors for harsh environment (avionics) based on nanostructures layers fabricated by spray-gun deposition method. Thanks to the fabrication of electrodes using spray-gun and the utilization of specific ionic liquids developed at Thales, we were able to achieve a capacitance of 20F/g (for a whole cell) and a power of 40kW/kg using carbon nanofibres (CNFs) mixed with reduced graphene oxide (RGO). These results are not the higher values obtained in literature but they are extremely interesting considering that the final device needs to stand temperature between -55°C and +105°C for avionics applications and that no commercial supercaps in the world are able to work in this interval. Only using these ionic liquids and the specific electrodes, it is possible. These supercapacitors were fabricated using spray-gun deposition method which is an extremely interesting technique from an industrial point of view considering that it can be easily implemented in roll-to-roll fabrication.


2017 ◽  
Vol 1495 ◽  
pp. 64-75 ◽  
Author(s):  
Cecilia Cagliero ◽  
Carlo Bicchi ◽  
Chiara Cordero ◽  
Erica Liberto ◽  
Patrizia Rubiolo ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document