Specific ion effects in the adsorption of carboxymethyl cellulose on cellulose: The influence of industrially relevant divalent cations

The adsorption of carboxymethylcellulose (CMC) on cellulose surfaces is relevance from both academic and industrial perspectives as it facilitates resource-efficient modification fibres that allows them to carry negative charges. It known that, compared monovalent ions, Ca2+ ions are superior in facilitating CMC the subsequent introduction charge fibres. However, formation deposition calcium oxide involved this process necessitates search for alternative cations. Magnesium form one more promising candidates since they already used pulping prevent degradation during peroxide bleaching. This work aims at elucidating effects industrially relevant alkaline earth metal divalent cations Mg2+ onto surfaces. Quartz Crystal Microbalance (QCM-D) technology was follow model systems real time, whereas commercial studied using polyelectrolyte titrations, total organic carbon (TOC) analysis conductometric titrations. study shows presence favourable types cellulosic than ions. distinction behaviour suggested be due differences polarizability findings decisive designing efficient processes polyelectrolytes similar charge.