Preparation of cellulosic soft and composite materials using ionic liquid media and ion gels

Cellulose ◽  
2021 ◽  
Author(s):  
Akihiko Takada ◽  
Jun-ichi Kadokawa
Author(s):  
Woo Young Lee ◽  
Yong Min Kim ◽  
Jin Han Kwon ◽  
Hong Chul Moon

In this study, a convenient approach is proposed to tune the properties of ion gels by utilizing mixed ionic liquid (IL) systems. Herein, a binary IL system consisting of 1-butyl-3-methylimidazolium...


2021 ◽  
pp. 095400832199676
Author(s):  
Yuting Ouyang ◽  
Qiu Zhang ◽  
Xiukun Liu ◽  
Ruan Hong ◽  
Xu Xu ◽  
...  

Different ionic liquid modified graphene nanosheets (IG) were induced into polyimide (PI) to improve the tribological, thermal, and mechanical properties of shape memory IG/PI composites. The results demonstrated that when using 1-aminoethyl-3-methylimidazole bromide to modify graphene nanosheets (IG-1), the laser-driven shape recovery rate of IG-1/PI composites (IGPI-1) reached 73.02%, which was 49.36% higher than that of pure PI. In addition, the IGPI-1 composite materials reached the maximum shape recovery rate within 15 s. Additionally, under dry sliding, the addition of IG can significantly improve the tribological properties of composite materials. IGPI-1 exhibited the best self-lubricating properties. Compared with pure PI, the friction coefficient (0.19) and wear rate (2.62 × 10–5) mm3/Nm) were reduced by 44.1% and 24.2%, respectively, and the T10% of IGPI-1 increased by 32.2°C. The Tg of IGPI-1 reached 256.5°C, which was 8.4°C higher than that of pure PI. In addition, the tensile strength and modulus of IGPI-1 reached 82.3 MPa and 1.18 GPa, which were significantly increased by 33.6% and 29.8%, respectively, compared with pure PI. We hope that this work will be helpful for the preparation of shape memory materials with excellent tribological, thermal, and mechanical properties.


2011 ◽  
Vol 116 (1) ◽  
pp. 277-282 ◽  
Author(s):  
Rachid Barhdadi ◽  
Michel Troupel ◽  
Clément Comminges ◽  
Michel Laurent ◽  
Andrew Doherty

Tetrahedron ◽  
2007 ◽  
Vol 63 (47) ◽  
pp. 11681-11685 ◽  
Author(s):  
Francesca D'Anna ◽  
Renato Noto
Keyword(s):  
Ion Pair ◽  

RSC Advances ◽  
2015 ◽  
Vol 5 (71) ◽  
pp. 57943-57949 ◽  
Author(s):  
Kavita Pandey ◽  
Pankaj Yadav ◽  
Indrajit Mukhopadhyay

In the present work, we report a facile strategy to synthesize uniform 3D flower-like MoS2 nanostructures prepared by a one-pot hydrothermal method and investigate their supercapacitive behavior.


ChemInform ◽  
2003 ◽  
Vol 34 (38) ◽  
Author(s):  
George W. Kabalka ◽  
Bollu Venkataiah ◽  
Gang Dong
Keyword(s):  

Metals ◽  
2018 ◽  
Vol 8 (7) ◽  
pp. 556 ◽  
Author(s):  
Nathalie Leclerc ◽  
Sophie Legeai ◽  
Maxime Balva ◽  
Claire Hazotte ◽  
Julien Comel ◽  
...  

This paper presents recent views on a hybrid process for beneficiation of secondary raw materials by combined electroleaching of targeted metals and electrodeposition. On the basis of several case studies with aqueous solutions or in ionic liquid media, the paper describes the potential and the limits of the novel, hybrid technique, together with the methodology employed, combining determination of speciation, physical chemistry, electrochemistry, and chemical engineering. On one hand, the case of electroleaching/electrodeposition (E/E) process in aqueous media, although often investigated at the bench scale, appears nevertheless relatively mature, because of the developed methodology, and the appreciable current density allowed, and so it can be used to successfully treat electrode materials of spent Zn/MnO2 batteries or Ni/Cd accumulators and Waelz oxide. On the other hand, the use of ionic liquids as promising media for the recovery of various metals can be considered for other types of wastes, as shown here for the case of electrodes of aged fuel cells. The combined (E/E) technique could be successfully used for the above waste, in particular by the tricky selection of ionic liquid media. Nevertheless, further investigations in physical chemistry and chemical engineering appear necessary for possible developments of larger-scale processes for the recovery of these strategic resources.


2019 ◽  
Vol 3 (12) ◽  
pp. 3399-3405
Author(s):  
Jenny Reichert ◽  
Stephanie Maerten ◽  
Katharina Meltzer ◽  
Alexander Tremel ◽  
Manfred Baldauf ◽  
...  

A promising way to increase the methanol yields in CO2 hydrogenation significantly up to 60% by in situ sorption of methanol and water in alkali salt-doped ionic liquids (ILs) is demonstrated.


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