Surface properties of woody thin boards composed of commercially available lignin and cellulose: Relationship between the orientation of lignin and water repellency

Toshinori Shimanouchi, Tomoya Kamba, Wei Yang, Satoka Aoyagi, Yukitaka Kimura

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Woody thin boards were prepared from lignin, cellulose, and water by compression molding at 180°C and 25 MPa for 10 min. Boards with higher contact angles gave lower values of relative permittivity on their surface. Attenuated-total reflection Fourier transfer infrared spectroscopy suggested that more lignin existed on the surface of the boards with the high contact angle, which was also supported by scanning electron microscopy and atomic force microscopy. Our findings thus revealed that the orientation of lignin at the surface resulted in increased hydrophobicity of the surface and contributed to the enhancement of water repellency.

Original languageEnglish
Pages (from-to)406-413
Number of pages8
JournalApplied Surface Science
Volume347
DOIs
Publication statusPublished - Aug 30 2015

Keywords

  • Cellulose
  • Hydrophobicity
  • Lignin
  • Roughness
  • Water repellency
  • Woody thin board

ASJC Scopus subject areas

  • Surfaces, Coatings and Films

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