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Ionic Liquids for the Production of Man-Made Cellulosic Fibers: Opportunities and Challenges

  • Michael Hummel
  • Anne Michud
  • Marjaana Tanttu
  • Shirin Asaadi
  • Yibo Ma
  • Lauri K. J. Hauru
  • Arno Parviainen
  • Alistair W. T. King
  • Ilkka Kilpeläinen
  • Herbert Sixta
Chapter
Part of the Advances in Polymer Science book series (POLYMER, volume 271)

Abstract

The constant worldwide increase in consumption of goods will also affect the textile market. The demand for cellulosic textile fibers is predicted to increase at such a rate that by 2030 there will be a considerable shortage, estimated at ~15 million tons annually. Currently, man-made cellulosic fibers are produced commercially via the viscose and Lyocell™ processes. Ionic liquids (ILs) have been proposed as alternative solvents to circumvent certain problems associated with these existing processes. We first provide a comprehensive review of the progress in fiber spinning based on ILs over the last decade. A summary of the reports on the preparation of pure cellulosic and composite fibers is complemented by an overview of the rheological characteristics and thermal degradation of cellulose–IL solutions. In the second part, we present a non-imidazolium-based ionic liquid, 1,5-diazabicyclo[4.3.0]non-5-enium acetate, as an excellent solvent for cellulose fiber spinning. The use of moderate process temperatures in this process avoids the otherwise extensive cellulose degradation. The structural and morphological properties of the spun fibers are described, as determined by WAXS, birefringence, and SEM measurements. Mechanical properties are also reported. Further, the suitability of the spun fibers to produce yarns for various textile applications is discussed.

Keywords

[DBNH]OAc Cellulosic fiber Dry-jet wet fiber spinning Ionic liquid Rheology Yarn spinning 

Abbreviations

[amim]

1-Allyl-3-methylimdazolium

[bmim]

1-Butyl-3-methylimdazolium

[emim]

1-Ethyl-3-methylimdazolium

AS

Acid sulfite

COP

Crossover point

DBN

1,5-Diazabicyclo[4.3.0]non-5-ene

dep

Diethylphosphate

dmp

Dimethylphosphate

DMSO

Dimethyl sulfoxide

FWHM

Full width at half maximum

MCC

Microcrystalline cellulose

NMMO

N-Methylmorpholine N-oxide

OAc

Acetate

PAN

Polyacrylnitrile

PG

Propyl gallate (propyl 3,4,5-trihydroxybenzoate)

PHK

Prehydrolysis kraft

SEM

Scanning electron microscopy

WAXS

Wide angle X-ray scattering

WLF

Williams–Landel–Ferry

Notes

Acknowledgement

This study is part of the Future Biorefinery program financed by the Finnish Bioeconomy Cluster (FIBIC) and the Finnish Funding Agency for Technology and Innovation (TEKES). The authors would like to thank Anders Persson and Anders Berntsson from the Swedish School of Textiles (University of Borås, Sweden) for their kind assistance with the yarn preparation.

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Copyright information

© Springer International Publishing Switzerland 2015

Authors and Affiliations

  • Michael Hummel
    • 1
  • Anne Michud
    • 1
  • Marjaana Tanttu
    • 2
  • Shirin Asaadi
    • 1
  • Yibo Ma
    • 1
  • Lauri K. J. Hauru
    • 1
  • Arno Parviainen
    • 3
  • Alistair W. T. King
    • 3
  • Ilkka Kilpeläinen
    • 3
  • Herbert Sixta
    • 1
  1. 1.Department of Forest Products TechnologyAalto UniversityAaltoFinland
  2. 2.Department of Design, School of Arts, Design and ArchitectureAalto UniversityAaltoFinland
  3. 3.Department of ChemistryUniversity of HelsinkiHelsinkiFinland

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