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Author(s): Luísa Carvalho
Flávio Pereira
Nádia Paiva
João Ferra
Jorge Manuel Martins
Fernão D. Magalhães
Title: Natural additives for reducing formaldehyde emissions in urea-formaldehyde resins
Issue Date: 2015-07-15
Abstract: This work studies the use of soy protein as a natural formaldehyde scavenger in wood particleboardproduction. The protein is incorporated in two forms: a) as a powder, during the blending process of woodparticles with urea-formaldehyde binder resin, and b) as an aqueous solution, added at different timesduring resin synthesis. Analysis of variance (ANOVA) was used to evaluate the signifi cance level of twoeffects (amount of added soy and time of addition) on internal bond strength, thickness swelling, andformaldehyde content of the resulting panels. The results showed that soy protein can contribute to decreasethe formaldehyde content of particleboard panels. Addition in powder form or in solution during the resincondensation step leads to the highest formaldehyde reduction, without signifi cantly affecting the physicalproperties of the panels.
Source: 6th Workshop on Green Chemistry and Nanotechnologies in Polymer Chemistry
Document Type: Artigo em Livro de Atas de Conferência Internacional
Rights: openAccess
Appears in Collections:FEUP - Artigo em Livro de Atas de Conferência Internacional

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