scholarly journals High-Performance Resistive Pressure Sensor Based on Elastic Composite Hydrogel of Silver Nanowires and Poly(ethylene glycol)

Micromachines ◽  
2018 ◽  
Vol 9 (9) ◽  
pp. 438 ◽  
Author(s):  
Youngsang Ko ◽  
Dabum Kim ◽  
Goomin Kwon ◽  
Jungmok You
Keyword(s):  
Composite Material ◽  
Ethylene Glycol ◽  
Pressure Sensor ◽  
High Performance ◽  
Silver Nanowires ◽  
High Sensitivity ◽  
Composite Hydrogel ◽  
Poly Ethylene Glycol ◽  
Pressure Sensing ◽  
Poly Ethylene

Improved pressure sensing is of great interest to enable the next-generation of bioelectronics systems. This paper describes the development of a transparent, flexible, highly sensitive pressure sensor, having a composite sandwich structure of elastic silver nanowires (AgNWs) and poly(ethylene glycol) (PEG). A simple PEG photolithography was employed to construct elastic AgNW-PEG composite patterns on flexible polyethylene terephthalate (PET) film. A porous PEG hydrogel structure enabled the use of conductive AgNW patterns while maintaining the elasticity of the composite material, features that are both essential for high-performance pressure sensing. The transparency and electrical properties of AgNW-PEG composite could be precisely controlled by varying the AgNW concentration. An elastic AgNW-PEG composite hydrogel with 0.6 wt % AgNW concentration exhibited high transmittance including T550nm of around 86%, low sheet resistance of 22.69 Ω·sq−1, and excellent bending durability (only 5.8% resistance increase under bending to 10 mm radius). A flexible resistive pressure sensor based on our highly transparent AgNW-PEG composite showed stable and reproducible response, high sensitivity (69.7 kPa−1), low sensing threshold (~2 kPa), and fast response time (20–40 ms), demonstrating the effectiveness of the AgNW-PEG composite material as an elastic conductor.

Investigation of the role of hydrophilic chain length in amphiphilic perfluoropolyether/poly(ethylene glycol) networks: towards high-performance antifouling coatings

Biofouling ◽  
2011 ◽  
Vol 27 (10) ◽  
pp. 1139-1150 ◽  
Author(s):  
Yapei Wang ◽  
Louis M. Pitet ◽  
John A. Finlay ◽  
Lenora H. Brewer ◽  
Gemma Cone ◽  
...  
Keyword(s):  
Ethylene Glycol ◽  
Chain Length ◽  
High Performance ◽  
Poly Ethylene Glycol ◽  
Antifouling Coatings ◽  
Poly Ethylene

scholarly journals Influence of Anion Structure on Thermal, Mechanical and CO2 Solubility Properties of UV-Cross-Linked Poly(ethylene glycol) Diacrylate Iongels

Membranes ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 46
Author(s):  
Ana P. S. Martins ◽  
Asier Fdz De Añastro ◽  
Jorge L. Olmedo-Martínez ◽  
Ana R. Nabais ◽  
Luísa A. Neves ◽  
...  
Keyword(s):  
Ethylene Glycol ◽  
High Performance ◽  
Mechanical Stability ◽  
Gas Permeability ◽  
Co2 Separation ◽  
Poly Ethylene Glycol ◽  
Co2 Solubility ◽  
Free Standing ◽  
Glycol Diacrylate ◽  
Poly Ethylene

Iongel-based CO2 separation membranes were prepared by fast (< 1 min) UV-initiated polymerization of poly(ethylene glycol) diacrylate (PEGDA) in the presence of different ionic liquids (ILs) with the [C2mim]+ cation and anions such as [TFSI]−, [FSI]−, [C(CN)3]− and [B(CN)4]−. The four ILs were completely miscible with the non-ionic PEGDA network. Transparent and free-standing iongels containing between 60 and 90 %wt of IL were obtained and characterized by diverse techniques (FTIR, TGA, DSC, DMTA, SEM, CO2 solubility and pure gas permeability). The thermal and mechanical stability of the iongels, as well as CO2 solubility, were found to be strictly dependent on the IL content and the anion’s nature. The TGA results indicated that the iongels mostly follow the thermal profile of the respective neat ILs. The DMTA analysis revealed that the iongels based on fluorinated anions have higher storage modulus than those of cyano-functionalized anions. Conversely, the PEGDA–C(CN)3 iongels presented the highest CO2 solubility values ranging from 72 to 80 mmol/g. Single CO2 permeabilities of 583 ± 29 Barrer and ideal CO2/N2 selectivities of 66 ± 3 were obtained with the PEGDA–70 C(CN)3 iongel membrane. This work demonstrates that the combination of PEGDA with high contents of the best performing ILs is a promising and simple strategy, opening up new possibilities in the design of high-performance iongel membranes for CO2 separation.

Ionic liquid capped carbon dots as a high-performance friction-reducing and antiwear additive for poly(ethylene glycol)

2016 ◽  
Vol 4 (19) ◽  
pp. 7257-7265 ◽  
Author(s):  
Baogang Wang ◽  
Weiwei Tang ◽  
Hongsheng Lu ◽  
Zhiyu Huang
Keyword(s):  
Ionic Liquid ◽  
Ethylene Glycol ◽  
Carbon Dots ◽  
High Performance ◽  
Antiwear Additive ◽  
Poly Ethylene Glycol ◽  
Friction Reducing ◽  
Poly Ethylene

This work presents ionic liquid capped carbon dots as a high-performance friction-reducing and antiwear additive for poly(ethylene glycol).

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