Interactions between wood polymers studied by dynamic FT-IR spectroscopy

Dynamic FT-IR spectroscopy was applied to study the mechanical interactions among cellulose, xylan and glucomannan in spruce wood fibers. The understanding of these interactions is of importance in controlling the physical properties of the fibers in different processes. A multivariate analysis demo...

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Bibliographic Details
Published in:Polymer (Guilford) 2001-02, Vol.42 (3), p.963-969
Main Authors: AKERHOLM, M, SALMEN, L
Format: Article
Language:English
Subjects:
Applied sciences
Cellulose
Cellulose and derivatives
Exact sciences and technology
Fourier transform infrared spectroscopy
Natural fibers
Natural polymers
Paper, paperboard, non wovens
Physicochemistry of polymers
Polymer industry, paints, wood
Properties and testing
Strain
Tensile stress
Wood
Wood. Paper. Non wovens
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Summary:Dynamic FT-IR spectroscopy was applied to study the mechanical interactions among cellulose, xylan and glucomannan in spruce wood fibers. The understanding of these interactions is of importance in controlling the physical properties of the fibers in different processes. A multivariate analysis demonstrated that the different carbohydrate polymers could be spectrally separated. These specific wavenumbers were then used to study the response of the wood polymers to a small sinusoidal tensile strain. The results showed a difference in mechanical behavior of the polymers depending on the loading direction toward the fiber axis. In parallel loading the results suggested a close cooperation between cellulose and glucomannan in the fiber wall, whereas xylan showed no mechanical interaction with cellulose.
ISSN:0032-3861
1873-2291
DOI:10.1016/s0032-3861(00)00434-1