The ultrastructure of wood fibre surfaces as shown by a variety of microscopical methods – a review

Duchesne, Isabelle; Daniel, Geoffrey

doi:10.3183/npprj-1999-14-02-p129-139

Cited by 59 publications

(52 citation statements)

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“…The observed structure of the primary cell wall associated with plasmalemma expressing polysaccharides fibril structure packed into the closed arrays is very similar to the one previously observed by TEM (Blankey et al, 1983;McCann et al, 1990) and suggested by Roelofsen et al (1965). Duchesne and Daniel (1999) have reviewed various microscopic methods, applied in the study of wood fiber ultrastructure, including using AFM. The high degree of similarities between FE-SEM and other electron microscopy methods and observed fibrilar features on the pulp fiber surfaces by AFM is extraordinary.…”

Section: Afm Examination Of Cell Wallssupporting

confidence: 50%

Scanning Probe Microscopy of Plant Cell Wall and Its Constituents

2005

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Section: Afm Examination Of Cell Wallssupporting

confidence: 50%

Scanning Probe Microscopy of Plant Cell Wall and Its Constituents

2005

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“…Most researchers believe that cellulose microfibrils in the S 2 layer are arranged helically at various angles (Brändström 2002;Gorshkova 2009;Gorshkova et al 2010;Duchesne and Daniel 1999). According to the physicochemical model, such a structure of linear polymers is the most stable in respect of mechanical and thermodynamic stability, and provides the cell wall with maximum robustness against different impacts.…”

Section: Resultsmentioning

confidence: 97%

Juniper wood structure under the microscope

Боголицын

Zubov

Чухчин

et al. 2015

Planta

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The investigations confirm the physicochemical nature of the structure and self-assembly of wood substance and endorse its application in plant species. The characteristic morphological features, ultra-microstructure, and submolecular structure of coniferous wood matrix using junipers as the representative tree were investigated by scanning electron (SEM) and atomic-force microscopy (AFM). Novel results on the specific composition and cell wall structure features of the common juniper (Juniperus Communis L.) were obtained. These data confirm the possibility of considering the wood substance as a nanobiocomposite. The cellulose nanofibrils (20-50 nm) and globular-shaped lignin-carbohydrate structures (diameter of 5-60 nm) form the base of such a nanobiocomposite.

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“…One should also have in mind that the pores up to the radius of 100 nm (as studied in this work) are all located in the fiber cell wall as a gel-like, water-swollen matrix of microfibrils, making the pore geometry arbitrary. From FE-SEM micrographs it is evident that pores between the microfibrills have a randomized structure with an average radius of 50 nm (Duchesne and Daniel 1999).…”

Section: Nmr Cryoporometry In the Study Of Pulp Hornificationmentioning

confidence: 99%

NMR cryoporometry to study the fiber wall structure and the effect of drying

et al. 2009

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NMR cryoporometry has been used for investigating the porosity changes of bleached wood pulp upon drying. This NMR method follows the same principles as thermoporosimetry, which has been used for the same purpose during the last decade and makes it possible to investigate porous material in the water-swollen state. In this study bleached softwood kraft pulp was exposed to a series of drying procedures where the decrease in porosity within the fiber cell wall could be characterized for pore radii below 100 nm. This decrease in porosity is called hornification, which is an irreversible collapse of the fiber wall structure during drying and results in decreased uptake of water and reduced swelling of the fiber upon rewetting. Our results have been compared to the traditionally used water retention value (WRV) and correlates well with these. Furthermore, this NMR method could show the reduction of hornification when adsorbing the hemicellulose glucuronoxylan to the fiber.

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The ultrastructure of wood fibre surfaces as shown by a variety of microscopical methods – a review

Cited by 59 publications

References 0 publications

Scanning Probe Microscopy of Plant Cell Wall and Its Constituents

Scanning Probe Microscopy of Plant Cell Wall and Its Constituents

Juniper wood structure under the microscope

NMR cryoporometry to study the fiber wall structure and the effect of drying

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