Cynara cardunculus L. alkaline pulps: Alternatives fibres for paper and paperboard production

The pulping of Cynara cardunculus L. (cardoon) was performed under conditions for kraft, kraft-AQ and soda-AQ processes. The best results in terms of delignification degree, expressed as kappa number, pulp viscosity and screened yield, were obtained for the kraft-AQ process with 0.20% of anthraquino...

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Bibliographic Details
Published in:Bioresource technology 2007-11, Vol.98 (15), p.2873-2878
Main Authors: Abrantes, S., Amaral, M.E., Costa, A.P., Duarte, A.P.
Format: Article
Language:English
Subjects:
Alkalies
Applied sciences
Biological and medical sciences
Cynara
Cynara cardunculus
Eucalyptus globulus
Exact sciences and technology
Fundamental and applied biological sciences. Psychology
Kraft-AQ pulping
Microscopy, Electron, Scanning
Paper and board properties
Paper and paperboard manufacturing
Paper, paperboard, non wovens
Polymer industry, paints, wood
Pulp characteristics
Soda-AQ pulping
Wood. Paper. Non wovens
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Summary:The pulping of Cynara cardunculus L. (cardoon) was performed under conditions for kraft, kraft-AQ and soda-AQ processes. The best results in terms of delignification degree, expressed as kappa number, pulp viscosity and screened yield, were obtained for the kraft-AQ process with 0.20% of anthraquinone (AQ). The papermaking potential of the selected pulp was studied attending to biometric fibre characterisation, refining aptitude, optical and strength properties. All properties were compared against a Eucalyptus globulus pulp at different refining degrees. The cardoon pulp was also evaluated concerning its potential to board manufacture, alone and in mixtures with pine pulp, giving rise to promising results for liner manufacture.
ISSN:0960-8524
1873-2976
DOI:10.1016/j.biortech.2006.09.052