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        Juvenile and Mature Pinewoods Treated by in situ Polymerization with Poly(vinyl acetate)

        Andrey Acosta,Ezequiel GALLIO,Paula Zanatta,Henrique Schulz,Rafael de Avila Delucis,Darci Gatto 한국섬유공학회 2021 Fibers and polymers Vol.22 No.3

        This study aims to produce and characterize wood-based composites (WPC) by in situ polymerization withpoly(vinyl acetate) into juvenile and mature woods from a pine specie. Vacuum-pressure method was used to impregnate thewood with a vinyl acetate monomer and benzoyl peroxide (1.5 wt%) was used as initiator. The studied WPC werecharacterized for treatment parameters (weight percentage gain and specific gravity), as well as chemical (by infraredspectroscopy), thermal (by thermogravimetric analysis) and mechanical (by flexure and hardness tests) features. The in situpolymerization yielded improved mechanical properties and increased thermal stabilities, which were attributed to theimpregnated poly(vinyl acetate) (especially on the wood surface) as suggested by treatment parameters and infrared spectra. The presented wood treatment may be a key strategy to improve pinewood properties, especially from juvenile wood, whichmay overcome the properties of the pristine mature wood.

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