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Differences in surface chemistry of regenerated lignocellulose fibers determined by chemically sensitive scanning probe microscopy

International journal of biological macromolecules, 2020-12, Vol.165, p.2520 [Peer Reviewed Journal]

ISSN: 0141-8130 ;ISSN: 1879-0003 ;EISSN: 1879-0003 ;DOI: 10.1016/j.ijbiomac.2020.10.145

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  • Title:
    Differences in surface chemistry of regenerated lignocellulose fibers determined by chemically sensitive scanning probe microscopy
  • Author: Gusenbauer, Claudia ; Nypelö, Tiina ; Jakob, Devon S. ; Xu, Xiaoji G. ; Vezenov, Dmitri V. ; Asaadi, Shirin ; Sixta, Herbert ; Konnerth, Johannes
  • Subjects: Atomic force microscopy ; Ioncell-F ; Lignocellulose
  • Is Part Of: International journal of biological macromolecules, 2020-12, Vol.165, p.2520
  • Description: Tuning the composition of regenerated lignocellulosic fibers in the production process enables targeting of specific material properties. In composite materials, such properties could be manipulated by controlled heterogeneous distribution of chemical components of regenerated fibers. This attribute requires a visualization method to show their inherent chemical characteristics. We compared complementary microscopic techniques to analyze the surface chemistry of four differently tuned regenerated lignocellulosic fibers. Adhesion properties were visualized with chemical force microscopy and showed contrasts towards hydrophilic and hydrophobic atomic force microscopy tips. Fibers containing xylan showed heterogeneous adhesion properties within the fiber structure towards hydrophilic tips. Additionally, peak force infrared microscopy mapped spectroscopic contrasts with nanometer resolution and provided point infrared spectra, which were consistent to classical infrared microscopy data. With this setup, infrared signals with a spatial resolution below 20 nm reveal chemical gradients in specific fiber types.
  • Language: English
  • Identifier: ISSN: 0141-8130
    ISSN: 1879-0003
    EISSN: 1879-0003
    DOI: 10.1016/j.ijbiomac.2020.10.145
  • Source: SWEPUB Freely available online
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