Phenol-formaldehyde resol containing mimosa tannin extract was employed to produce plywood panels with two plies from Eucalyptus globulus veneers. The effect of processing conditions and tannin content on the gelation time ...

Two organically modified (Cloisite® 30B and 10A) and one unmodified clay (Cloisite® Na) were added to a resol-type phenolic prepolymer. The modified montmorillonites showed a better dispersion in the prepolymer. The ...

Nanocomposites based on resol resin and layered silicates were obtained by in situ polymerization. An increment in the viscosity and in the content of free formaldehyde in the prepolymer with the addition of clay was ...

Vegetable fibers like cotton, sisal, and sugar cane bagasse have been used as reinforcement in a polymeric matrix. Because of its low cost and affinity with lignocellulosic fibers, a phenol-formaldehyde resin —resol— was ...

Las ligninas son polímeros polifenólicos naturales obtenidos principalmente como subproducto en la industria papelera. En la actualidad, las ligninas se utilizan como reemplazo parcial de fenol que es un recurso no ...