Spinning cellulose hollow fibers using 1-ethyl-3-methylimidazolium acetate-dimethylsulfoxide co-solvent

TY - JOUR

T1 - Spinning cellulose hollow fibers using 1-ethyl-3-methylimidazolium acetate-dimethylsulfoxide co-solvent

AU - Lei, Linfeng

AU - Lindbråthen, Arne

AU - Sandru, Marius

AU - Gutierrez, Maria Teresa Guzman

AU - Zhang, Xiangping

AU - Hillestad, Magne

AU - He, Xuezhong

N1 - Publisher Copyright: © 2018 by the authors.

PY - 2018/9/1

Y1 - 2018/9/1

N2 - The mixture of the ionic liquid 1-ethyl-3-methylimidazolium acetate (EmimAc) and dimethylsulfoxide (DMSO) was employed to dissolve microcrystalline cellulose (MCC). A 10 wt % cellulose dope solution was prepared for spinning cellulose hollow fibers (CHFs) under a mild temperature of 50 °C by a dry-wet spinning method. The defect-free CHFs were obtained with an average diameter and thickness of 270 and 38 μm, respectively. Both the XRD and FTIR characterization confirmed that a crystalline structure transition from cellulose I (MCC) to cellulose II (regenerated CHFs) occurred during the cellulose dissolution in ionic liquids and spinning processes. The thermogravimetric analysis (TGA) indicated that regenerated CHFs presented a similar pyrolysis behavior with deacetylated cellulose acetate during pyrolysis process. This study provided a suitable way to directly fabricate hollow fiber carbon membranes using cellulose hollow fiber precursors spun from cellulose/(EmimAc + DMSO)/H2O ternary system.

AB - The mixture of the ionic liquid 1-ethyl-3-methylimidazolium acetate (EmimAc) and dimethylsulfoxide (DMSO) was employed to dissolve microcrystalline cellulose (MCC). A 10 wt % cellulose dope solution was prepared for spinning cellulose hollow fibers (CHFs) under a mild temperature of 50 °C by a dry-wet spinning method. The defect-free CHFs were obtained with an average diameter and thickness of 270 and 38 μm, respectively. Both the XRD and FTIR characterization confirmed that a crystalline structure transition from cellulose I (MCC) to cellulose II (regenerated CHFs) occurred during the cellulose dissolution in ionic liquids and spinning processes. The thermogravimetric analysis (TGA) indicated that regenerated CHFs presented a similar pyrolysis behavior with deacetylated cellulose acetate during pyrolysis process. This study provided a suitable way to directly fabricate hollow fiber carbon membranes using cellulose hollow fiber precursors spun from cellulose/(EmimAc + DMSO)/H2O ternary system.

KW - Cellulose

KW - Hollow fiber

KW - Ionic liquids

KW - Spinning

KW - Viscosity

UR - http://www.scopus.com/inward/record.url?scp=85052636149&partnerID=8YFLogxK

U2 - 10.3390/polym10090972

DO - 10.3390/polym10090972

M3 - 文章

AN - SCOPUS:85052636149

SN - 2073-4360

VL - 10

JO - Polymers

JF - Polymers

IS - 9

M1 - 972

ER -