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

O Zavgorodnya, Julia Shamshina, J R Bonner, R D Rogers

Research output: Contribution to journalArticlepeer-review

Abstract

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 nonionic 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 electros
Original languageEnglish
Pages (from-to)5512–5519
JournalACS Sustainable Chem. Eng.
DOIs
StatePublished - 2017

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