US 12,104,028 B2
Ionic gel film preparation method, chemical sensor and preparation method thereof
Jia Huang, Shanghai (CN); Li Li, Shanghai (CN); and Tongrui Sun, Shanghai (CN)
Assigned to Tongji University, Shanghai (CN)
Filed by Tongji University, Shanghai (CN)
Filed on Nov. 23, 2023, as Appl. No. 18/518,473.
Claims priority of application No. 202211483899.8 (CN), filed on Nov. 24, 2022.
Prior Publication US 2024/0174826 A1, May 30, 2024
Int. Cl. C08J 5/18 (2006.01); G01N 27/22 (2006.01)
CPC C08J 5/18 (2013.01) [G01N 27/226 (2013.01); C08J 2339/04 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A preparation method of an ionic gel film, wherein the ionic gel comprises a poly(ionic liquid) and a vinyl-free ionic liquid monomer, the ionic gel is formed by compounding the vinyl-free ionic liquid monomer with the poly(ionic liquid), the poly(ionic liquid) is formed through the polymerization of ionic liquid monomers containing C═C double bonds to form a skeleton, while the vinyl-free ionic liquid monomer exists in a free state within the poly(ionic liquid), the preparation method comprises:
blending a vinyl-free ionic liquid with a vinyl-containing ionic liquid and a specified additive to obtain a homogenous solution, wherein the concentration of the vinyl-free ionic liquid is less than or equal to the concentration of the vinyl-containing ionic liquid, the additive is at least one of photoinitiators, crosslinkers, and plasticizers,
taking a predetermined amount of the homogenous solution and dropping it onto a first substrate equipped with interdigital electrodes,
flattening the homogenous solution on the first substrate using a second substrate,
curing the flattened homogenous solution on the first substrate using ultraviolet light of a preset wavelength,
and, curing until the vinyl-containing ionic liquid polymerizes in situ to form an ionic gel film.