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This content will become publicly available on August 18, 2022

Title: Practical Online Monitoring of Ionic Liquid Fiber Welding Solvent
Ionic liquids (ILs) are becoming important solvents in commerce, but monitoring their purity and performance in industrial applications presents new challenges. Fiber welding technology utilizes ILs to mold and shape natural fibers (cotton, hemp, flax, silk, and wool) into morphologies that are typically attained only using synthetic, petroleum-based non-biodegradable plastics. The result is an atom-efficient process that up-converts fibrous substrates to value-added products and materials. A key aspect of bringing this and other IL-enabled technologies to market relies on efficient monitoring and recycling of IL-based solvents. Implementing online IL quality monitoring enhances the unit economics of these processes. Here, we characterize and report conductivity measurements, refractometry, and ATR–FTIR spectroscopy techniques for online IL monitoring during an industrial fiber welding process. The online analysis enables more efficient recycling of the IL solvent, increasing the process efficiency and product quality.
Authors:
Award ID(s):
1651381
Publication Date:
NSF-PAR ID:
10318691
Journal Name:
ACS omega
Volume:
6
Issue:
34
ISSN:
2470-1343
Sponsoring Org:
National Science Foundation
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