All-lignocellulosic Fiberboard from Steam Exploded Arundo Donax L

• Published in: Molecules (Basel, Switzerland) Switzerland), 2018-08, Vol.23 (9), p.2088
• Main Authors: Ramos, Diego, El Mansouri, Nour-Eddine, Ferrando, Francesc, Salvadó, Joan
• Format: Article
• Language: English
• Subjects: all-lignocellulosic; Arundo donax; Arundo donax L; binderless; Biomass; Cellulose; Ethanol; Explosions; fiberboards; Fibers; Hemicellulose; Hot pressing; Lignin; Lignocellulose; Mechanical properties; Molecular chains; Physical properties; Raw materials; Steam; steam explosion; Water resistance
• ISSN: 1420-3049; 1420-3049
• DOI: 10.3390/molecules23092088

This paper explores the possibility of producing all-lignocellulosic fiberboards from L. as a source of lignocellulosic fibers with no synthetic binders. This raw material was steam exploded with a thermomechanical aqueous vapor process in a batch reactor. The raw material and its obtained pulp were characterized in terms of chemical composition and the results were compared to other lignocellulosic materials. The chemical composition of steam exploded fibers showed high cellulose and a moderate lignin content suggesting it was a good raw material for fiberboard production. The all-lignocellulosic fiberboards were produced on laboratory scale; using the steam exploded by means of a wet process. The effects of pressing pressure on physical and mechanical properties were evaluated and the conditions that optimize the responses were found. The analyzed properties were density (d); water absorption (WA); thickness swelling (TS); modulus of elasticity (MOE); modulus of rupture (MOR); and internal bond strength (IB). The tested levels of the pressing pressure range from 0.35 to 15 MPa. The optimum IB; MOE; MOR; WA and TS were 1.28 MPa, 7439 MPa, 40.4 MPa, 17.6% and 13.3%, respectively. The obtained fiberboards were of very good quality and more than satisfy the requirements of the relevant standard specifications.