Screw holding ability of the lignin-bonded biocomposites. Biocomposites derived from the unmodified and enzymatically modified lignin, hemp shives and shellac were manufactured in injection moulding process. The boards were characterized by hardness and screw holding ability. It was found that screw holding ability of the tested boards was comparable to those for particleboard and MDF. Moreover, addition of shellac results in increase in that parameter, however the influence of the enzymatic treatment on screw holding occurred ambiguous and strongly dependent on the enzyme type.
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