Electrokinetic Investigations of Oriented Cellulose Polymers

Abstract

Electrokinetic investigations of different cellulosic fibres were reviewed with special emphasis on polymer composite materials and textile applications of cellulose fibres. The possibilities in the interpretation of zeta-potential data regarding chemical and physical modification, specific adsorption, swelling and changes in hydrophobicity/hydrophilicity of cellulose polymers are discussed. Using recent data from literature, advantages and limitations of electrokinetic measurements of oriented polymers are described, finding that the zeta-potential is a valuable parameter in polymer surface characterisation.

Influence of Different Pretreatments on the Antibacterial Properties of Chitosan Functionalized Viscose Fabric: TEMPO Oxidation and Coating with TEMPO Oxidized Cellulose Nanofibrils

“…On the other hand, in the alkaline pH range the protonation of CS amino groups should be suppressed (IEP of CS was about 6.8 [40]) and negative zeta potential of the TEMPO oxidized viscose fabric after functionalization with CS is expected. The slightly positive values of zeta potential obtained in a higher pH region could be, according to literature [41], explained by charge reversal, attributed to strongly adsorbed sodium ions, which were present in the chitosan solution used for functionalization, but also as counter ions to carboxylate groups in the TEMPO oxidized viscose.…”

Chemical, Thermo-Mechanical and Antimicrobial Properties of DBD Plasma Treated Disinfectant-Impregnated Wipes during Storage

“…It seems that plasma treatment is able to enhance the cellulose absorption ability of W2 by increasing the liquid mass transfer into the inner part of the wipe. The swelling effect becomes more pronounced after plasma treatment facilitated by the shift of the cellulose shear plane towards the solution and furthermore increasing the adsorption [21,31].…”

Effect of Nitrogen Plasma Treatment and Direct Dye on Zeta Potential of Cotton Fabric

“…Electrical potential in this shear plane called electro kinetic potential or zeta potential, aka ae potential 47,48 . Zeta potential affected by surface functional groups, ion sorption, hydrophilicity/hydrophobicity, electrolyte concentration and valency of ions in electrolyte 8,[47][48][49][50] . Figure.…”

“…It seems that the polymers contain oxygen groups are more sensitive than the polyolefin to remove the surface layer. Plasma treatment under the same conditions for polyester tends to remove the layer more than nylon 6, and nylon 6 is more than polypropylene 1,3,[6][7][8] .…”