In order to introduce charged groups onto cotton fibres the adsorption of carboxymethyl cellulose (CMC) onto fibre surface was investigated. The increase of charge was determined indirectly by phenol-sulphuric acid method and directly by conductometric titration. It was found that the total charge of cotton was increased by more than 50 % in the case of all used CMC products. Modification of cotton by adsorption of CMC introduces new carboxylgroups on the fibre surfaces, which increases the adsorption capacity of the fibres for cationic surfactant (cetylpyridinium chloride). The modified fibres appeared to have better mechanical properties. It is expected that this modification procedure can be used for practical applications.
|Publication status||Published - 2006|