Methyl cellulose/cellulose nanocrystal nanocomposite fibers with high ductility

Research output: Contribution to journalArticleScientificpeer-review

Details

Original languageEnglish
Pages (from-to)334-345
Number of pages12
JournalEuropean Polymer Journal
Volume112
Publication statusPublished - 1 Mar 2019
MoE publication typeA1 Journal article-refereed

Researchers

Research units

  • Max Planck Institut fur Kolloid Und Grenzflachenforschung Potsdam
  • University of Helsinki

Abstract

Methylcellulose/cellulose nanocrystal (MC/CNC) nanocomposite fibers showing high ductility and high modulus of toughness were prepared by a simple aqueous wet-spinning from corresponding nanocomposite hydrogels into ethanol coagulation bath followed by drying. The hydrogel MC aq. concentration was maintained at 1 wt-% while the CNC aq. loading was systematically varied in the range 0–3 wt-%. This approach resulted in MC/CNC fiber compositions from 25/75 wt-%/wt-% to 95/5 wt-%/wt-%. The optimal mechanical properties were achieved with the MC/CNC composition of 80/20 wt-%/wt-% allowing high strain (36.1%) and modulus of toughness (48.3 MJ/m3), still keeping a high strength (190 MPa). Further, we demonstrate that the continuous spinning of MC/CNC fibers is potentially possible. The results indicate possibilities to spin MC-based highly ductile composite fibers from environmentally benign aqueous solvents.

    Research areas

  • Cellulose nanocrystal, Liquid crystal, Methylcellulose, Nanocomposite fiber, Toughness

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