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High‐performance Lignocellulosic Fibers Spun from Ionic Liquid Solution

Cellulose Science and Technology, 2018, p.341-370

2019 John Wiley & Sons, Inc. ;ISBN: 9781119217589 ;ISBN: 111921758X ;EISBN: 9781119217626 ;EISBN: 1119217628 ;EISBN: 9781119217619 ;EISBN: 111921761X ;DOI: 10.1002/9781119217619.ch14 ;OCLC: 1051777690 ;LCCallNum: QD323 .C455 2019

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  • Title:
    High‐performance Lignocellulosic Fibers Spun from Ionic Liquid Solution
  • Author: Rosenau, Thomas ; Potthast, Antje ; Hell, Johannes
  • Hell, Johannes ; Potthast, Antje ; Rosenau, Thomas
  • Subjects: CHEMISTRY ; cupriethylenediamine ; gel permeation chromatography ; intermediate cellulose derivatives ; intrinsic viscosity ; ionic liquids ; man‐made cellulosic fibers ; molar mass distribution
  • Is Part Of: Cellulose Science and Technology, 2018, p.341-370
  • Description: In a long development of solvents for cellulose dissolution and fiber spinning, ionic liquids represent the youngest category with great potential both from an environmental and technical point of view. Herein, we report on 1,5‐diazabicyclo[4.3.0]non‐5‐ene‐1‐ium acetate – a nonimidazolium based ionic liquid – as excellent solvent for a wide set of lignocellulosic solutes to prepare composite fibers of cellulose, hemicellulose, and lignin. The viscoelastic properties of the polymer solutions that are governed by the cellulosic constituents have to be within defined limits to assure good spinnability. The solutions are processed in a Lyocell‐type dry‐jet wet spinning procedure that allows for a filament draw in the air gap. The draw was found to be a major factor controlling the mechanical properties of the resulting fibers. However, the effect of the draw was dependent on the solute composition. With a high share of cellulose, a small draw led already to high tensile strength and modulus. All fibers showed high tenacities and moduli even when containing a high share of noncellulosics. The elongation at break was affected significantly only at high lignin content. A distinct relationship was found between the cellulose content and the mechanical properties.
  • Publisher: United States: John Wiley & Sons, Incorporated
  • Language: English
  • Identifier: ISBN: 9781119217589
    ISBN: 111921758X
    EISBN: 9781119217626
    EISBN: 1119217628
    EISBN: 9781119217619
    EISBN: 111921761X
    DOI: 10.1002/9781119217619.ch14
    OCLC: 1051777690
    LCCallNum: QD323 .C455 2019
  • Source: Ebook Central Academic Complete
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