Journal of Wood Science

, 46:343 | Cite as

Microfibril angle of Norway spruce [Picea abies (L.) Karst.] compression wood: comparison of measuring techniques

  • Seppo Andersson
  • Ritva Serimaa
  • Mika Torkkeli
  • Timo Paakkari
  • Pekka Saranpää
  • Erkki Pesonen
Original Article

Abstract

The structure of cellulose, especially the microfibril angles (MFAs), in compression wood of Norway spruce [Picea abies (L.) Karst.] was studied by wide- and small-angle X-ray scattering and polarizing microscopy. On the basis of the X-ray scattering experiments the average MF As of the cell wall layers S2 and S1 of the studied sample are 39‡ and 89‡, respectively; and the average diameter and length of the cellulose crystallites are 2.9 and 20.0nm, respectively. The average of the whole MFA distribution is shown to agree with the one obtained by polarizing microscopy of macerated fibers.

Key words

Microfibril angle Wide angle X-ray scattering Small-angle X-ray scattering Wood cellulose Picea abies (L.) Karst 

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Copyright information

© The Japan Wood Research Society 2000

Authors and Affiliations

  • Seppo Andersson
    • 1
  • Ritva Serimaa
    • 1
  • Mika Torkkeli
    • 1
  • Timo Paakkari
    • 1
  • Pekka Saranpää
    • 2
  • Erkki Pesonen
    • 2
  1. 1.Department of PhysicsUniversity of HelsinkiHelsinkiFinland
  2. 2.Finnish Forest Research Institute METLAVantaaFinland

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