scholarly journals Wet Spinning of α-1,3-glucan using an Ionic Liquid

2021 ◽  
Vol 77 (8) ◽  
pp. 213-222
Author(s):  
Azusa Togo ◽  
Shiori Suzuki ◽  
Satoshi Kimura ◽  
Tadahisa Iwata
Keyword(s):  
Ionic Liquid ◽  
Wet Spinning

scholarly journals Mass transport and yield during spinning of lignin-cellulose carbon fiber precursors

Holzforschung ◽  
2019 ◽  
Vol 73 (5) ◽  
pp. 509-516 ◽  
Author(s):  
Jenny Bengtsson ◽  
Kerstin Jedvert ◽  
Artur Hedlund ◽  
Tobias Köhnke ◽  
Hans Theliander
Keyword(s):  
Ionic Liquid ◽  
Mass Transport ◽  
Total Concentration ◽  
Renewable Resource ◽  
Wet Spinning ◽  
Lignin Concentration ◽  
Liquid Solutions ◽  
Fundamental Understanding ◽  
Crucial Information ◽  
Soluble Lignin

Abstract Lignin, a substance considered as a residue in biomass and ethanol production, has been identified as a renewable resource suitable for making inexpensive carbon fibers (CFs), which would widen the range of possible applications for light-weight CFs reinforced composites. Wet spinning of lignin-cellulose ionic liquid solutions is a promising method for producing lignin-based CFs precursors. However, wet-spinning solutions containing lignin pose technical challenges that have to be solved to enable industrialization. One of these issues is that a part of the lignin leaches into the coagulation liquid, which reduces yield and might complicate solvent recovery. In this work, the mass transport during coagulation is studied in depth using a model system and trends are confirmed with spinning trials. It was discovered that during coagulation, efflux of ionic liquid is not hindered by lignin concentration in solution and the formed cellulose network will enclose soluble lignin. Consequently, a high total concentration of lignin and cellulose in solution is advantageous to maximize yield. This work provides a fundamental understanding on mass transport during coagulation of lignin-cellulose solutions, crucial information when designing new solution-based fiber forming processes.

Understanding key wet spinning parameters in an ionic liquid spun regenerated cellulosic fibre

Cellulose ◽  
2016 ◽  
Vol 23 (4) ◽  
pp. 2741-2751 ◽  
Author(s):  
Rasike De Silva ◽  
Kylie Vongsanga ◽  
Xungai Wang ◽  
Nolene Byrne
Keyword(s):  
Ionic Liquid ◽  
Wet Spinning ◽  
Cellulosic Fibre

Phase Structure of Acrylic Fibers Processed with Ionic Liquid as Solvent

2012 ◽  
Vol 560-561 ◽  
pp. 41-45 ◽  
Author(s):  
Xue Min Yin ◽  
Li Zhang ◽  
Xin Jun Zhu ◽  
Hua Ping Wang ◽  
Yu Mei Zhang
Keyword(s):  
Ionic Liquid ◽  
Phase Structure ◽  
Draw Ratio ◽  
High Viscosity ◽  
Wet Spinning ◽  
Ordered Structure ◽  
Strain Measurements ◽  
Initial Modulus ◽  
Paracrystalline Structure ◽  
Acrylic Fibers

The acrylic fibers were prepared by dry-jet wet spinning technology from polyacrylinitrile (PAN) /1-butyl-3-methylimidazolium chloride ([BMIM]Cl) solution for the investigation of phase structure changing with drawing in boiling water. The DMA, WAXD and stress-strain measurements were conducted. It is shown that only a single Tg was observed from DMA and the paracrystalline structure was shown from WAXD. Although the the crystallinity and orientation increased with increasing draw ratio, the high crystallinity of the pre-drawn fiber indicates that the ordered structure was formed in the pre-drawn fiber by the high pre-drawn ratio (3.5) during the dry-jet wet spinning from high-viscosity PAN/[BMIM]Cl solution. It is also found that the initial modulus, ultimate elongation and tenacity increased with the increase of draw ratio.

Dry jet-wet spinning of strong cellulose filaments from ionic liquid solution

Cellulose ◽  
2014 ◽  
Vol 21 (6) ◽  
pp. 4471-4481 ◽  
Author(s):  
Lauri K. J. Hauru ◽  
Michael Hummel ◽  
Anne Michud ◽  
Herbert Sixta
Keyword(s):  
Ionic Liquid ◽  
Liquid Solution ◽  
Wet Spinning ◽  
Ionic Liquid Solution

scholarly journals Erratum to: Dry jet-wet spinning of strong cellulose filaments from ionic liquid solution

Cellulose ◽  
2017 ◽  
Vol 24 (7) ◽  
pp. 3109-3110 ◽  
Author(s):  
Lauri K. J. Hauru ◽  
Michael Hummel ◽  
Anne Michud ◽  
Herbert Sixta
Keyword(s):  
Ionic Liquid ◽  
Liquid Solution ◽  
Wet Spinning ◽  
Ionic Liquid Solution

Air-Jet Wet-Spinning of Curdlan Using Ionic Liquid

2021 ◽  
Vol 9 (11) ◽  
pp. 4247-4255
Author(s):  
Shiori Suzuki ◽  
Azusa Togo ◽  
Hongyi Gan ◽  
Satoshi Kimura ◽  
Tadahisa Iwata
Keyword(s):  
Ionic Liquid ◽  
Wet Spinning ◽  
Air Jet

Regenerated silk fiber wet spinning from an ionic liquid solution

2005 ◽  
Vol 15 (39) ◽  
pp. 4206 ◽  
Author(s):  
David M. Phillips ◽  
Lawrence F. Drummy ◽  
Rajesh R. Naik ◽  
Hugh C. De Long ◽  
Douglas M. Fox ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Liquid Solution ◽  
Silk Fiber ◽  
Wet Spinning ◽  
Ionic Liquid Solution

Study on Performances of Cyanethyl Chitosan Fiber Prepared from [Asp]Cl Ionic Liquid

2012 ◽  
Vol 581-582 ◽  
pp. 698-701
Author(s):  
De Zeng Xu ◽  
Ting Zhao ◽  
Zhi Chao Liu ◽  
Lu Nan Bai ◽  
Jing Guo
Keyword(s):  
Ionic Liquid ◽  
Aspartic Acid ◽  
Room Temperature ◽  
Breaking Strength ◽  
Fiber Strength ◽  
Bath Temperature ◽  
Wet Spinning ◽  
Ft Ir ◽  
Acid Hydrochloride ◽  
Chitosan Fiber

Aspartic acid hydrochloride ionic liquid ([Asp]Cl) was successfully synthesized from aspartic acid powder and 36% hydrochloric acid. The derivative of chitosan cyanoethyl chitosan was prepared by acrylonitrile and alkali chitosan at room temperature. Structures of ionic liquid and cyanoethyl chitosan were characterized by FT-IR. Crystalline properties of cyanoethyl chitosan were characterized by XRD. Cyanoethyl chitosan was dissolved in [Asp]Cl ionic liquid aqueous solution and subjected to wet spinning. The mechanical properties of cyanoethyl chitosan fibers were tested by type LLY-06 electronic single fiber strength tester, and the surface morphology of fibers were observed by microscope. The results show that the maximum breaking strength of fiber was 2.212CN/dtex when the concentration of cyanoethyl chitosan was 6.5% relativing to 3% ionic liquid and the coagulating bath temperature was 30°C.

scholarly journals New insights into the air gap conditioning effects during the dry-jet wet spinning of an ionic liquid-cellulose solution

Cellulose ◽  
2020 ◽  
Vol 27 (9) ◽  
pp. 4931-4948
Author(s):  
Chamseddine Guizani ◽  
Kaarlo Nieminen ◽  
Marja Rissanen ◽  
Sauli Larkiala ◽  
Michael Hummel ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Air Gap ◽  
Wet Spinning ◽  
Cellulose Solution
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