Low-Density Cardoon (Cynara cardunculus L.) Particleboards Bound with Potato Starch-Based Adhesive

In the present work, and for the first time, totally biosourced low-density particleboards were produced using cardoon particles (a no added value by-product from the Portuguese cheese making industry), bound with a potato starch adhesive. Different starch/cardoon ratios (0.6, 0.8, 1 and 1.2) were t...

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Bibliographic Details
Published in:Polymers 2020-08, Vol.12 (8), p.1799
Main Authors: Monteiro, Sandra, Nunes, Lina, Martins, Jorge, D. Magalhães, Fernão, Carvalho, Luísa
Format: Article
Language:English
Subjects:
Additives
Adhesion tests
Adhesives
Bond strength
Bonding strength
Cassava
Chitosan
Contact angle
Density
Formulations
Glycerol
Lignocellulose
Milk
Moisture content
Potatoes
Seeds
Wood fibers
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Summary:In the present work, and for the first time, totally biosourced low-density particleboards were produced using cardoon particles (a no added value by-product from the Portuguese cheese making industry), bound with a potato starch adhesive. Different starch/cardoon ratios (0.6, 0.8, 1 and 1.2) were tested and the effect of different bio-based additives (chitosan, wood fiber and glycerol) on the performance of the adhesive system was evaluated. The best result was obtained for a formulation with a starch/cardoon mass ratio of 0.8, a chitosan/starch mass ratio of 0.05 and a water/starch mass ratio of 1.75. The particleboards produced had a density of 323 kg·m−3, internal bond strength of 0.35 N·mm−2 and thickness swelling of 15.2%. The values of density and internal bond strength meet the standard requirements of general-purpose lightweight boards for use in dry conditions according to CEN/TS 16368 specification. Moreover, the susceptibility of the formulations with best results was established against subterranean termites and one decay fungi.
ISSN:2073-4360
2073-4360
DOI:10.3390/polym12081799