Preparation of microfibers from wood/ionic liquid solutions

Improving agar electrospinnability with choline-based deep eutectic solvents

“…5B) ending up as coarse aggregates of fibers when the changes in viscosity and gelation became even more significant. The use of a solvent bath may also increase the tendency for fiber agglomeration during electrospinning due to the slower solvent removal from the fibers when compared to typical electrospinning set-ups dealing with volatile solvents [37]. All these aspects contributed to a broad distribution of fiber diameters (Fig.…”

Ionic liquids assisted processing of renewable resources for the fabrication of biodegradable composite materials

“…The residual IL in the fiber is removed using ethanol or water and the fiber is washed by deionized water and dried at 50-60°C for a day. 118 Polaskova et al 119 used a wet electrospinning technique for the transformation of raw pine wood into microfiber ( reported that 5% wood concentration in the IL was most appropriate for electrospinning and an increase in the biomass loading up to 10% complicated the process due to drastic increase in the viscosities of the solutions. Raw delignified lignocellulose biomass (hemp) was successfully electrospun using ([C 2 C 1 im][OAc]) as the spinning solvent by Ahn et al 120 As expected, the spinning efficiency and fiber morphology strongly depended on the lignin contents of the raw biomass.…”

Green Composites from Ionic Liquid-Assisted Processing of Sustainable Resources: A Brief Overview

“…A typical electrospinning apparatus based on IL-assisted dissolution and regeneration of cellulose is shown in Figure 2. Polaskova et al [36] dissolved raw pine wood in IL [emim][OAc] and utilized wet electrospinning technique to transform it into microfibers (1-4 μm). It was noted that 5% wood loading in IL was the most appropriate concentration for electrospinning, and further increase in the biomass loading up to 10 % could complicate the process due to significant increase in the viscosity of solution.…”