The multilayer formation between polyelectrolytes of opposite charge offers possibility for creating new tailored materials. Recently it has been shown that pure cellulose multilayers can be built based on anionic and cationic cellulose nanofibrils. We further explore this by systematically evaluating the effect of both NFC charge and properties of cationic polyelectrolytes on the structure of the multilayers. As the anionic component low charged NFC and high charged TEMPO- oxidized NFC was used. As the cationic component cationic NFC was compared with two different cationic polyelectrolytes. Quartz crystal microbalance with dissipation (QCM-D) was used to monitor the multilayer formation and AFM colloidal probe-technique was further applied to probe surface interactions in order to gain information about fundamental interactions and layer properties. In addition, AFM-imaging gave evidence about the formed multilayer structure. Results show how the charge and polymer properties have an effect on both formation and interactions between layers.

Comparison of multilayer formation between different cellulose nanofibrils and cationic polymers

241st National Meeting (2011)

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