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Lignin-Based Solid Polymer Electrolytes: Lignin-Graft-Poly(ethylene glycol)
- Source :
- Macromolecular rapid communications. 42(3)
- Publication Year :
- 2020
-
Abstract
- Lignin is an aromatic-rich biomass polymer that is cheap, abundant, and sustainable. However, its application in the solid electrolyte field is rare due to challenges in well-defined polymer synthesis. Herein, the synthesis of lignin-graft-poly(ethylene glycol) (PEG) and its conductivity test for a solid electrolyte application are demonstrated. The main steps of synthesis include functionalization of natural lignin's hydroxyl to alkene, followed by graft-copolymerization of PEG thiol to the lignin via photoredox thiol-ene reaction. Two lignin-graft-PEGs are prepared having 22 wt% lignin (lignin-graft-PEG 550) and 34 wt% lignin (lignin-graft-PEG 2000). Then, new polymer electrolytes for conductivity tests are prepared via addition of lithium bis-trifluoromethanesulfonimide. The polymer graft electrolytes exhibit ionic conductivity up to 1.4 × 10-4 S cm-1 at 35 °C. The presence of lignin moderately impacts conductivity at elevated temperature compared to homopolymer PEG. Furthermore, the ionic conductivity of lignin-graft-PEG at ambient temperature is significantly higher than homopolymer PEG precedents.
- Subjects :
- Polymers and Plastics
Polymers
macromolecular substances
02 engineering and technology
Electrolyte
Conductivity
Lithium
010402 general chemistry
complex mixtures
01 natural sciences
Lignin
Polyethylene Glycols
chemistry.chemical_compound
Electrolytes
PEG ratio
Materials Chemistry
Ionic conductivity
chemistry.chemical_classification
Chemistry
Alkene
fungi
Organic Chemistry
technology, industry, and agriculture
food and beverages
Polymer
021001 nanoscience & nanotechnology
0104 chemical sciences
Chemical engineering
0210 nano-technology
Ethylene glycol
Subjects
Details
- ISSN :
- 15213927
- Volume :
- 42
- Issue :
- 3
- Database :
- OpenAIRE
- Journal :
- Macromolecular rapid communications
- Accession number :
- edsair.doi.dedup.....ed5b171aec85596386e004673266a052