Effects of polyimide sequence and monomer structures on CO2 permeation and mechanical properties of sulfonated polyimide/ionic liquid composite membranes

Polymer ◽  
2022 ◽  
pp. 124533
Author(s):  
Shogo Tachibana ◽  
Kei Hashimoto ◽  
Haruna Mizuno ◽  
Kazuhide Ueno ◽  
Masayoshi Watanabe
Keyword(s):  
Mechanical Properties ◽  
Ionic Liquid ◽  
Composite Membranes ◽  
Sulfonated Polyimide

scholarly journals Sulfonated Polyimide/Ionic Liquid Composite Membranes for CO2 Separation: Transport Properties in Relation to Their Nanostructures

2018 ◽  
Vol 51 (18) ◽  
pp. 7112-7120 ◽  
Author(s):  
Akika Ito ◽  
Tomohiro Yasuda ◽  
Tetsuro Yoshioka ◽  
Akihiro Yoshida ◽  
Xiang Li ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Transport Properties ◽  
Composite Membranes ◽  
Co2 Separation ◽  
Sulfonated Polyimide

Sulfonated polyimide/ionic liquid composite membranes for carbon dioxide separation

2017 ◽  
Vol 49 (9) ◽  
pp. 671-676 ◽  
Author(s):  
Akika Ito ◽  
Tomohiro Yasuda ◽  
Xiaofeng Ma ◽  
Masayoshi Watanabe
Keyword(s):  
Carbon Dioxide ◽  
Ionic Liquid ◽  
Composite Membranes ◽  
Carbon Dioxide Separation ◽  
Sulfonated Polyimide

Effects of Polymer Structure on Properties of Sulfonated Polyimide/Protic Ionic Liquid Composite Membranes for Nonhumidified Fuel Cell Applications

2012 ◽  
Vol 4 (3) ◽  
pp. 1783-1790 ◽  
Author(s):  
Tomohiro Yasuda ◽  
Shin-ichiro Nakamura ◽  
Yoshiyuki Honda ◽  
Kei Kinugawa ◽  
Seung-Yul Lee ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Fuel Cell ◽  
Composite Membranes ◽  
Polymer Structure ◽  
Protic Ionic Liquid ◽  
Sulfonated Polyimide

Effects of ionic liquid types on the tribological, mechanical, and thermal properties of ionic liquid modified graphene/polyimide shape memory composites

2021 ◽  
pp. 095400832199676
Author(s):  
Yuting Ouyang ◽  
Qiu Zhang ◽  
Xiukun Liu ◽  
Ruan Hong ◽  
Xu Xu ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Ionic Liquid ◽  
Composite Materials ◽  
Shape Memory ◽  
Recovery Rate ◽  
Shape Recovery ◽  
Graphene Nanosheets ◽  
Mechanical And Thermal Properties ◽  
Thermal And Mechanical Properties ◽  
Modified Graphene

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.

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