The present study focuses on the assessment of natural vegetal extracts in the inhibition of bacteria altering Vienna sausages whose growth becomes evident in the vacuum packed product after two to three weeks of ...

Las ligninas son polímeros naturales que se emplean como sustitutos de fenol en las resinas de fenol-formaldehído. La elección del tipo de lignina se basa en su precio, disponibilidad y reactividad química. La baja reactividad ...

Las resinas de fenol-formaldehído (PF) son polímeros sintéticos obtenidos por reacción entre el fenol (P) y el formaldehído (F). En la actualidad, la sustitución parcial del P por polímeros naturales, tales como las ligninas ...

En este trabajo se obtuvieron superficies sólidas industriales por reemplazo parcial de un 5% de resina poliéster insaturada (derivada del petróleo) por aceite de ricino (recurso renovable y económico) maleinizado sintetizado ...

Lignins are natural polymers of the lignocellulosic biomass. Nowadays, there is a growing interest in developing value-added products based on lignins due to their renewability, low cost and abundance. In this work, ...

Phenol-formaldehyde resins (PF) are thermosetting polymers used as adhesives for plywoods and other structural wood products including high pressure laminates (HPLs). HPLs are composite materials comprised of a paper-based ...

Urea formaldehyde (U-F) base resins are obtained by reaction between urea (U) and formaldehyde (F) and are used mainly as adhesives in the manufacture of wood panels.