The rheological properties of carboxymethylated nanofibrillated cellulose (NFC) were investigated using oscillatory and rotational measurements. It was demonstrated that carboxymethylated NFC exhibits properties similar to those of other NFC systems described in the literature.  The outcome of these trials indicates that the consistency at which NFC is produced, while keeping the shearing energy in the homogenization step constant, influences the rheological properties of the system. The investigations imply that there is a critical concentration below which the efficiency of the delamination process diminishes. The same adverse effect is also observed when the critical concentration is significantly exceeded, which is postulated to be caused by lowering the amount of shearing per amount of processed fibre.

Carboxymethylated nanofibrillated cellulose: Rheological studies

247th National Meeting (2014)

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