The effect of different surface sizing formulations on thechemical features of surfaces of the papers producedfrom Eucalyptus kraft pulp was studied. The surfaceanalysis techniques, electron spectroscopy for chemicalanalysis and time-of-flight secondary ion mass spec-trometry were applied. An uncoated base paper, the ref-erence material, was sized with blends of cationic starchwith either co-acrylonitrile-acrylate or co-styrene-acry-late. The results of both techniques are in good agree-ment and complete each other. It was possible not onlyto detect the presence of the surface sizing agents onthe paper surface but also to distinguish them and eval-uate their distribution and relative concentration. In addi-tion, it was found that application of higher amounts ofthe sizing formulations, at a constant ratio of 20% copoly-mer to starch, did not significantly change the chemicalproperties of the paper surfaces
展开▼
