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  • The significance of surface charge and structure on the accessibility of cellulose fibres
    Ribitsch, Volker ...
    The electrokinetic properties of macroscopic solids can describe both the surface modifications as well as the interactions abilities during processing. Normally the zeta potential is measured and ... can be used to develop, optimise and control the manufacturing process. The zeta potential of natural and rgenerated cellulose fibres changes noticeably during the pre-treatment and finishing process and it is importnat for quality of the final product (whiteness, colour, hydrophilicity). The pretreatment of cellulose fibres improves the accessibility of dissociable groups. Further improvement of hydrophylicity (mercerisation) causes a pronounced increase in the surface charge density and a reduction in the degree of crystallinity and structural modifications. The progress of the chemical as well as the enzymatic treatment correlates with zeta potentail. These data correlate very well with the results obtained using tensiometry, water retention and water vapour and iodine adsorption. The changes in crystallinity index and the accessibility for low molecular components are well described by the latter methods.
    Vir: Macromolecular materials and engineering. - ISSN 1438-7492 (Vol. 286, no. 10, Oct. 2001, str. 648-654)
    Vrsta gradiva - članek, sestavni del
    Leto - 2001
    Jezik - angleški
    COBISS.SI-ID - 6951190

vir: Macromolecular materials and engineering. - ISSN 1438-7492 (Vol. 286, no. 10, Oct. 2001, str. 648-654)

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