Aplicación de adhesivos de soja para aglomerados basados en residuos

R.A.RUSECKAITE; P.M.STEFANI

Revista de Aceites y Grasas (A&G)

Asociación Argentina de Grasas y Aceites

Año: 2007 vol. 1 p. 114 - 119

0328-381x

The development of effective biobased adhesives and the search for environmentally friendly substitutes of wood - shaving would benefit the particleboard manufacturing industry through reduced product costs, environmental concerns, and petroleum dependency. The present work analyze the feasibility of producing particleboards based on rice husks as substitute of wood shaving and adhesives from soybean protein concentrate as alternative for formaldehyde-based adhesives. Soybean protein concentrate was treated with sodium - hydroxide and temperature in order to improve the bonding ability of soy proteins. Mechanical properties and water resistance were determined in order to evaluate the performance of the obtained panels. Results showed that particleboard with sodium hydroxide-modified soy protein at 50 ºC had the best mechanical properties and higher water resistance than that exhibit by panels bonded with untreated and sodium hydroxide-modified soy protein at room temperature. The lower water resistance boards with sodium hydroxide-modified soy protein at 50 ºC compared to that with formaldehyde-based resins is counterbalanced with the advantage of being more environmentally sound and could be suitable for applications where the requirements for water resistance are not stringent.