the best results in terms of selectivity and screened yield for
0.20% of anthraquinone.
The results obtained indicate that C. cardunculus L.
fibres present properties similar to the wood fibres used
as reference, E. globulus. Thus, this species could be considered
promising in terms of papermaking, depending of the
selected end use.
The cardoon pulp characterisation in terms of board
properties suggested that this species could be blended with
wood fibres to produce paperboard grades. The results
showed that this species is suitable to the manufacture of
liner papers or fluting media, although in the later case is
probably better the use of shorter fibres. Another interesting
use of these fibres will be the reinforcement of recycled
fibres, and by this way to improve the strength characteristics
of papers containing secondary fibres.