Properties of chemically and mechanically isolated fibres of spruce (Picea abies [L.] Karst.). Part 1: Structural and chemical characterisation
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Ingo Burgert
Abstract
Single fibres of spruce (Picea abies [L.] Karst.) were isolated both chemically and mechanically from a solid wood sample. Mechanical isolation was carried out using very fine tweezers to peel out fibres, thereby taking advantage of the low shear strength between them. Chemical isolation was achieved using hydrogen peroxide and glacial acetic acid. Fibres were examined with Fourier-transform infrared (FT-IR) microscopy, and field-emission environmental scanning electron microscopy (FE-ESEM) in low-Vacuum mode to compare the isolation techniques with respect to their influence on cell wall structure and polymer assembly. The chemical treatment led to degradation of lignin and hemicelluloses, significantly influencing the cell wall assembly and structure. The cell wall polymers of mechanically isolated fibres remained in their natural constitution. As expected, the peeling process caused separation of cell wall layers. Our examinations indicate that delamination predominately took place at the interface between the secondary cell wall and the compound middle lamella. However, fracture between the S1 and S2 layers was examined as well. With respect to fibre quality, it was of particular importance that transverse crack propagation in the secondary cell walls (S2) was not observed.
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©2005 by Walter de Gruyter Berlin New York
Articles in the same Issue
- Obituary
- The role of non-phenolic lignin in chlorate-forming reactions during chlorine dioxide bleaching of softwood kraft pulp
- Study of the oxygen effect on mechanical pulp lignin using an improved lignin isolation method
- Quantitative 1H NMR analysis of alkaline polysulfide solutions
- A comparative study on the degradation of cotton linters induced by carbonate and hydroxyl radicals generated from peroxynitrite
- The carbonate radical as one-electron oxidant of carbohydrates in alkaline media
- Leaf-fiber lignins of Phormium varieties compared bysolid-state 13C NMR spectroscopy
- Antifungal activity of iridoid glycosides from the heartwood of Gmelina arborea
- Antioxidant activity of different components of pine species
- Dislocations in Norway spruce fibres and their effect on properties of pulp and paper
- Isolation and identification of antifungal compounds from Amboyna wood
- Biomechanical pulping of spruce wood chips with Streptomyces cyaneus CECT 3335 and handsheet characterization
- Three-dimensional visualisation of bacterial decay in individual tracheids of Pinus sylvestris
- Mass loss and moisture dynamics of Scots pine (Pinus sylvestris L.) exposed outdoors above ground in Sweden
- The influence of cation and anion structure of new quaternary ammonium salts on adsorption and leaching
- Speciation of arsenic and chromium in the leachate from chromated copper arsenate (CCA) type C treated southern pine (Pinus spp.)
- Metal chelation studies relevant to wood preservation.1. Complexation of propyl gallate with Fe2+
- Comparison of UV and confocal Raman microscopy to measure the melamine–formaldehyde resin content within cell walls of impregnated spruce wood
- Comparison of Pinus taeda L. wood property calibrations based on NIR spectra from the radial-longitudinal and radial-transverse faces of wooden strips
- Detection of failures of adhesively bonded joints using the acoustic emission method
- Effect of cross-sectional change of a board specimen on stress wave velocity determination
- Comments on the experimental methodology for determination of the hygro-mechanical properties of wood
- Properties of chemically and mechanically isolated fibres of spruce (Picea abies [L.] Karst.). Part 1: Structural and chemical characterisation
- Properties of chemically and mechanically isolated fibres of spruce (Picea abies[L.] Karst.). Part 2: Twisting phenomena
Articles in the same Issue
- Obituary
- The role of non-phenolic lignin in chlorate-forming reactions during chlorine dioxide bleaching of softwood kraft pulp
- Study of the oxygen effect on mechanical pulp lignin using an improved lignin isolation method
- Quantitative 1H NMR analysis of alkaline polysulfide solutions
- A comparative study on the degradation of cotton linters induced by carbonate and hydroxyl radicals generated from peroxynitrite
- The carbonate radical as one-electron oxidant of carbohydrates in alkaline media
- Leaf-fiber lignins of Phormium varieties compared bysolid-state 13C NMR spectroscopy
- Antifungal activity of iridoid glycosides from the heartwood of Gmelina arborea
- Antioxidant activity of different components of pine species
- Dislocations in Norway spruce fibres and their effect on properties of pulp and paper
- Isolation and identification of antifungal compounds from Amboyna wood
- Biomechanical pulping of spruce wood chips with Streptomyces cyaneus CECT 3335 and handsheet characterization
- Three-dimensional visualisation of bacterial decay in individual tracheids of Pinus sylvestris
- Mass loss and moisture dynamics of Scots pine (Pinus sylvestris L.) exposed outdoors above ground in Sweden
- The influence of cation and anion structure of new quaternary ammonium salts on adsorption and leaching
- Speciation of arsenic and chromium in the leachate from chromated copper arsenate (CCA) type C treated southern pine (Pinus spp.)
- Metal chelation studies relevant to wood preservation.1. Complexation of propyl gallate with Fe2+
- Comparison of UV and confocal Raman microscopy to measure the melamine–formaldehyde resin content within cell walls of impregnated spruce wood
- Comparison of Pinus taeda L. wood property calibrations based on NIR spectra from the radial-longitudinal and radial-transverse faces of wooden strips
- Detection of failures of adhesively bonded joints using the acoustic emission method
- Effect of cross-sectional change of a board specimen on stress wave velocity determination
- Comments on the experimental methodology for determination of the hygro-mechanical properties of wood
- Properties of chemically and mechanically isolated fibres of spruce (Picea abies [L.] Karst.). Part 1: Structural and chemical characterisation
- Properties of chemically and mechanically isolated fibres of spruce (Picea abies[L.] Karst.). Part 2: Twisting phenomena
