Journal
MACROMOLECULAR CHEMISTRY AND PHYSICS
Volume 219, Issue 24, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/macp.201800216
Keywords
3D printing; ionic liquids; multifunctional ionic gels; thiol-ene reaction
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Funding
- Japan Society for the Promotion of Science (JSPS) [17H01224]
- Center Of Innovation (COI) program from the Japan Science and Technology Agency (JST)
- Strategic Innovation Creation Project (SIP) from the New Energy and Industrial Technology Development Organization (NEDO) of Japan
- Program on Open Innovation Platform with Enterprises, Research Institute and Academia (OPERA) from the JST
- JSPS
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A series of 3D printable multifunctional ionic gels (IGs) are developed incorporating ionic liquid (IL) in the thiol-ene network of thiol-based end-crosslinker and acrylate monomers. The resulted gels, termed as thiol-ionic gels (T-IGs), are highly transparent and very soft with IL content of 70-85 wt%. The mechanical and conductive properties of the T-IGs are found to be largely dependent on the IL content, end-crosslinker functionalities, and chain-length of monomers. Progression of ionic conductivity is observed with an increase in IL content and conductivity as high as 5.40 mS cm(-1) is attained for longer acrylate group containing T-IGs at room temperature, while further increase is observed at elevated temperature. T-IGs in all systems are found to exhibit superior thermal stability. Three-dimensional fabrication of these functional T-IGs is achieved by optical 3D printing process with microscale resolution in facile steps.
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