Effect of enzymatic treatment (endo-glucanases) of fiber and mechanical lignocellulose nanofibers addition on physical and mechanical properties of binderless high-density fiberboards made from wheat straw

Fiberboards are used in a variety of applications that can be for interior as well exterior. However, their production involves the consumption virgin wood fibers and use formaldehyde-based adhesives, with consequent impact on environment health. The removal these adhesives results significant loss physico-mechanical properties. To confront major problems, wheat straw, an agricultural waste, raw material binderless fiberboards has been explored. As alternative to synthetic adhesive, enzymatic treatment fiber lignocellulose nanofibers (LCNFs) addition, combination, have studied. different treatments produce important increase mechanical properties front untreated commercial fiberboard, being combination both which presents best results. Separately, produces greater strengthening effect than addition LCNF. In terms structural stability, LCNFs combinations shows water absorption thickness swelling. obtained show possibility obtain without far superior fiberboardsas such bending strengths higher 100 MPa, flexural modulus 5.5 GPa, internal bond 1.6 122.52 kJ/m 2 strength estimated added cost 1 €/m 3 . • Binderless high sustainable construction panels. mitigating healthy risks environmental impacts materials. Cellulose new technology environmentally friendly fiberboard production. Agricultural waste valorization building