Spinning Cellulose Hollow Fibers Using 1-Ethyl-3-methylimidazolium Acetate–Dimethylsulfoxide Co-Solvent

Beijing Key Laboratory of Ionic Liquids Clean Process, Institute of Process Engineering, Chinese Academy of Sciences, P.O. Box 353, Beijing 100190, China

Author to whom correspondence should be addressed.

Polymers 2018, 10(9), 972; https://doi.org/10.3390/polym10090972

Received: 31 July 2018 / Revised: 23 August 2018 / Accepted: 29 August 2018 / Published: 1 September 2018

(This article belongs to the Special Issue Hollow Fiber)

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Abstract

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. View Full-Text

Keywords: ionic liquids; cellulose; hollow fiber; spinning; viscosity

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MDPI and ACS Style

Lei, L.; Lindbråthen, A.; Sandru, M.; Gutierrez, M.T.G.; Zhang, X.; Hillestad, M.; He, X. Spinning Cellulose Hollow Fibers Using 1-Ethyl-3-methylimidazolium Acetate–Dimethylsulfoxide Co-Solvent. Polymers 2018, 10, 972. https://doi.org/10.3390/polym10090972

AMA Style

Lei L, Lindbråthen A, Sandru M, Gutierrez MTG, Zhang X, Hillestad M, He X. Spinning Cellulose Hollow Fibers Using 1-Ethyl-3-methylimidazolium Acetate–Dimethylsulfoxide Co-Solvent. Polymers. 2018; 10(9):972. https://doi.org/10.3390/polym10090972

Chicago/Turabian Style

Lei, Linfeng, Arne Lindbråthen, Marius Sandru, Maria T.G. Gutierrez, Xiangping Zhang, Magne Hillestad, and Xuezhong He. 2018. "Spinning Cellulose Hollow Fibers Using 1-Ethyl-3-methylimidazolium Acetate–Dimethylsulfoxide Co-Solvent" Polymers 10, no. 9: 972. https://doi.org/10.3390/polym10090972

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Spinning Cellulose Hollow Fibers Using 1-Ethyl-3-methylimidazolium Acetate–Dimethylsulfoxide Co-Solvent

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