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Title: Electrospinning Biopolymers from Ionic Liquids Requires Control of Different Solution Properties than Volatile Organic Solvents

Journal Article · · ACS Sustainable Chemistry & Engineering
 [1];  [2];  [3]; ORCiD logo [4]
  1. Department of Chemistry, The University of Alabama, Tuscaloosa, Alabama 35487, United States
  2. 525 Solutions, Inc., 720 Second Street, Tuscaloosa, Alabama 35401, United States
  3. CFM Group, LLC, 2135 University Blvd., Tuscaloosa, Alabama 35401, United States
  4. Department of Chemistry, The University of Alabama, Tuscaloosa, Alabama 35487, United States; 525 Solutions, Inc., 720 Second Street, Tuscaloosa, Alabama 35401, United States; Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montreal, Quebec H3A 0B8, Canada

Here, we report the correlation between key solution properties and spinability of chitin from the ionic liquid (IL) 1-ethyl-3-methylimidazolium acetate ([C2mim][OAc]), and the similarities and differences to electrospinning solutions of non-ionic polymers in volatile organic compounds (VOCs). We found that when electrospinning is conducted from ILs, conductivity and surface tension are not the key parameters regulating spinability, while solution viscosity and polymer concentration are. Contrarily, for electrospinning of polymers from VOCs, solution conductivity and viscosity have been reported to be among some of the most important factors controlling fiber formation. For chitin electrospun from [C2mim][OAc], we found both a critical chitin concentration required for continuous fiber formation (> 0.20 wt%) and a required viscosity for the spinning solution (between ca. 450 – 1500 cP). The high viscosities of the biopolymer-IL solutions made it possible to electrospin solutions with low, less than 1 wt% of polymer concentration and produce thin fibers without the need to adjust the electrospinning parameters. These results suggest new prospects for the control of fiber architecture in non-woven mats, which is crucial for materials performance.

Research Organization:
The Univ. of Alabama, Tuscaloosa, AL (United States); McGill Univ., Montreal, QC (Canada); 525 Solutions, Inc., Tuscaloosa, AL (United States); Univ. of Alabama, Tuscaloosa, AL (United States)
Sponsoring Organization:
USDOE Office of Nuclear Energy (NE); USDOE Office of Science (SC)
Contributing Organization:
525 Solutions, Inc.
Grant/Contract Number:
SC0010152; NE0000672
OSTI ID:
1361565
Alternate ID(s):
OSTI ID: 1353372; OSTI ID: 1508247; OSTI ID: 1508248; OSTI ID: 1592731; OSTI ID: 1592733
Journal Information:
ACS Sustainable Chemistry & Engineering, Journal Name: ACS Sustainable Chemistry & Engineering Vol. 5 Journal Issue: 6; ISSN 2168-0485
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 30 works
Citation information provided by
Web of Science

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  • Swatloski, Richard P.; Spear, Scott K.; Holbrey, John D.
  • Journal of the American Chemical Society, Vol. 124, Issue 18, p. 4974-4975 https://doi.org/10.1021/ja025790m
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