All-lignocellulosic Fiberboard from Steam Exploded Arundo Donax L

Area of Science:

• Materials Science
• Biomaterials Engineering
• Sustainable Manufacturing

Background:

• Traditional fiberboards often rely on synthetic binders, raising environmental concerns.
• Arundo donax L. (giant reed) presents a promising, abundant lignocellulosic resource.
• Developing binderless fiberboards is crucial for sustainable construction materials.

Purpose of the Study:

• To investigate the production of all-lignocellulosic fiberboards from Arundo donax.
• To characterize the chemical composition of Arundo donax fibers.
• To evaluate the physical and mechanical properties of binderless fiberboards produced via a wet process.

Main Methods:

• Steam explosion treatment of Arundo donax in a batch reactor.
• Chemical characterization of raw material and pulp.
• Laboratory-scale production of fiberboards using a wet process.
• Evaluation of physical (density, water absorption, thickness swelling) and mechanical (MOE, MOR, IB) properties under varying pressing pressures (0.35–15 MPa).

Main Results:

• Steam-exploded Arundo fibers possess high cellulose and moderate lignin content, suitable for fiberboard production.
• Optimized pressing conditions yielded fiberboards with excellent properties.
• Optimum values achieved: IB (1.28 MPa), MOE (7439 MPa), MOR (40.4 MPa), WA (17.6%), and TS (13.3%).

Conclusions:

• All-lignocellulosic fiberboards can be successfully produced from Arundo donax without synthetic binders.
• The produced fiberboards meet and exceed relevant industry standard specifications.
• Arundo donax is a viable and sustainable raw material for high-quality binderless fiberboard manufacturing.