SciELO - Scientific Electronic Library Online

 
vol.103 issue1-2Internationalization of R&D: Where does South Africa stand? author indexsubject indexarticles search
Home Pagealphabetic serial listing  

South African Journal of Science

On-line version ISSN 1996-7489
Print version ISSN 0038-2353

Abstract

MEINCKEN, M.. Atomic force microscopy to determine the surface roughness and surface polarity of cell types of hardwoods commonly used for pulping. S. Afr. j. sci. [online]. 2007, vol.103, n.1-2, pp.4-6. ISSN 1996-7489.

Atomic force microscopy can be used to determine the surface roughness and surface polarity of different cell types originating from hardwood species. This analytical method allows images representing the topography and polarity of a surface to be captured simultaneously at a molecular (nanometre) resolution. The distribution of hydrophilic (polar) groups on these cell surfaces influences the subsequent processing of woodpulp in paper manufacture. These surface properties of fibres, vessel elements and parenchyma cells were investigated for Acacia mearnsii, Eucalyptus grandis, E. dunnii and E. macarthurii. A clear distinction was observed between the cell types and the species in terms of polarity and surface roughness. All four species are currently being used for paper manufacture in South Africa,butnot with equal success. This study may help to explain the differences in pulp quality obtained for the various species.

        · text in English     · English ( pdf )

 

Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License