The addition of hydrogen peroxide into the defibrator system
reduced the pH of the pre-treated straw material by
several units. From approximately pH 4.5 of strawto pH values
close to 3 of the refined strawfibres. The pH-buffering capacity
displayed the same type of behaviour.
Produced wheat straw fibre showed an average length
and width of approximately 1.1mm, 26m, respectively. The
fibre properties or fibre length distribution was not affected
by the different processing conditions in this investigation.