Analysis of microfibril angle in acacia mangium wood using small-angle x-ray scattering

Tamer A. Tabet, Fauziah Abdul Aziz, Shahidan Radiman

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Microfibril angle, (MFA) in hardwood is one of the key determinants of solid timber performance due to its strong influence on the stiffness, strength, shrinkage, swelling, thermal-dynamics mechanical properties and dimensional stability of wood.. A method is presented for the measurement, using small-angle X-ray scattering (SAXS), of the microfibril angle, (MFA) and the associated standard deviation for the cellulose microfibrils in the S2 layer of the cell walls of Acacia mangium wood. The length and orientation of the microfibrils of the cell walls in the irradiated volume of the thin samples are measured using SAXS and scanning electron microscope, (SEM). The undetermined parameters in the analysis are the MFA, (M) and the standard deviation (σφ) of the intensity distribution arising from the wandering of the fibril orientation about the mean value. Nine separate pairs of values are determined for nine different values of the angle of the incidence of the X-ray beam relative to the normal to the radial direction in the sample. The results show good agreement. The curve distribution of scattered intensity for the real cell wall structure is compared with that calculated with that assembly of rectangular cells with the same ratio of transverse to radial cell wall length. It is demonstrated that for β = 45°, the peaks in the curve intensity distribution for the real and the rectangular cells coincide. If this peak position is φ45, Then the MFA can be determined from the relation M = tan-1 (tan φ45 / cos 45°), which is precise for rectangular cells. . Here we shall present our results of the MFA in the cell wall with respect to its shape and structure as an important fast check and yet accurate towards the quality of wood, its uses and application.

Original languageEnglish
Title of host publicationLecture Notes in Engineering and Computer Science
Pages2016-2019
Number of pages4
Volume3 LNECS
Publication statusPublished - 2013
Event2013 World Congress on Engineering, WCE 2013 - London
Duration: 3 Jul 20135 Jul 2013

Other

Other2013 World Congress on Engineering, WCE 2013
CityLondon
Period3/7/135/7/13

Fingerprint

Wood
Cells
Scattering
X rays
X ray scattering
Dimensional stability
Hardwoods
Timber
Swelling
Cellulose
Electron microscopes
Stiffness
Scanning
Mechanical properties

Keywords

  • Acacia mangium
  • MFA
  • Microfibril angle
  • Rectangular cell wall and real cell wall
  • Small-angle x-ray scattering

ASJC Scopus subject areas

  • Computer Science (miscellaneous)

Cite this

Tabet, T. A., Aziz, F. A., & Radiman, S. (2013). Analysis of microfibril angle in acacia mangium wood using small-angle x-ray scattering. In Lecture Notes in Engineering and Computer Science (Vol. 3 LNECS, pp. 2016-2019)

Analysis of microfibril angle in acacia mangium wood using small-angle x-ray scattering. / Tabet, Tamer A.; Aziz, Fauziah Abdul; Radiman, Shahidan.

Lecture Notes in Engineering and Computer Science. Vol. 3 LNECS 2013. p. 2016-2019.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Tabet, TA, Aziz, FA & Radiman, S 2013, Analysis of microfibril angle in acacia mangium wood using small-angle x-ray scattering. in Lecture Notes in Engineering and Computer Science. vol. 3 LNECS, pp. 2016-2019, 2013 World Congress on Engineering, WCE 2013, London, 3/7/13.
Tabet TA, Aziz FA, Radiman S. Analysis of microfibril angle in acacia mangium wood using small-angle x-ray scattering. In Lecture Notes in Engineering and Computer Science. Vol. 3 LNECS. 2013. p. 2016-2019
Tabet, Tamer A. ; Aziz, Fauziah Abdul ; Radiman, Shahidan. / Analysis of microfibril angle in acacia mangium wood using small-angle x-ray scattering. Lecture Notes in Engineering and Computer Science. Vol. 3 LNECS 2013. pp. 2016-2019
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