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Determination of the adsorption character of cellulose fibres using surface tension and surface charge
Stana-Kleinschek, Karin ...
Tensiometry, seldom used in fibre characterization, was used to obtain the differences in the absorption properties of different cellulose fibres. The surface tension, contact angle and adsorption ...were measured and then compared with various methods for determining water adsorption. Currently, some additional methods, especially sensitive to surface properties (electrokinetic properties of fibres), are being applied in order to characterize the adsorption character and reactivity of the fibre surfaces. The streaming potential was measured, and from these values the zeta potential was calculated as a function of the pH and surfactant concentration in the liquid phase. Natural fibres have a weaker hydrohpilic character and are less reactive than the regenerated ones, so the maximum zeta potential of cotton is the highest and the contact angle ▫$\phi$▫ the greatest.
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