Title:
Sustainable Panels Obtained through Self-bonding Technology
Author(s):
Briones, R., Troncoso, L., Contreras, D., Romero, R., Melín, V., Reyes, D., Ballerini, A.
Document(s):
Paper
Poster
Abstract:
In Chile, panels represent the fourth most produced forest product after chemical pulp, sawn wood, and wood chips. Plywood and medium-density particleboard (MDP) are the most produced. One of the drawbacks associated with panel manufacturing is the need to use synthetic adhesive resins during the pressing phase. Although synthetic resins are highly reactive, highly weather-resistant (particularly phenol-formaldehyde resin), and have mechanical strength, their raw materials are derived from non-renewable petrochemicals that are volatile and expensive, as they are dependent on oil price fluctuations. Furthermore, formaldehyde has been classified as a human carcinogen. Direct and indirect formaldehyde emissions are identified in panel production. The amount of formaldehyde released as an emission from the manufacturing process is estimated at around 7·10 mg/kg of adhesive for atmospheric emissions, and up to 10 times higher for water emissions. In addition, greenhouse gases associated with energy and fuel requirements, as well as emissions of other volatile organic compounds, methanol and phenol, are also considered hazardous air pollutants. Therefore, scientific and industrial interest in replacing traditional formaldehyde-based synthetic adhesives with sustainable, renewable methods to produce more environmentally friendly materials is based on reducing free formaldehyde emissions from wood composites and on a sustainable approach to raw materials and final products, in order to comply with increasingly stringent environmental and health legislation. This work is a preliminary study that presents a technology for activating surface lignocellulosic components that allow self-adhesion of wood fibers during the pressing stage for panels manufacturing. Based on the background and results obtained by the research group, process conditions were evaluated for obtaining plywood prototypes without the need for synthetic adhesives. These prototypes were then evaluated according to their physical and mechanical characteristics.
Keywords:
sustainable, wood fibers, self-bonding
Topic:
Biomass, Bio-based Products and Bioenergy Integration
Subtopic:
Resource efficient bioeconomy
Event:
33rd European Biomass Conference and Exhibition
Session:
3CV.8.26
Pages:
583 - 586
ISBN:
978-88-89407-25-7
Paper DOI:
10.5071/33rdEUBCE2025-3CV.8.26
Price:
FREE
