INVESTIGADORES
ARANGUREN mirta Ines
congresos y reuniones científicas
Título:
Lignin in Polymeric Materials
Autor/es:
ACHA, BETIANA A.; CAPURRO, CONSTANTINO; MARCOVICH, NORMA E.; ARANGUREN, MIRTA I.; REBOREDO, MARÍA M.
Lugar:
Barcelona, España
Reunión:
Jornada; 7th International Forum of International Lignin Institute (ILI); 2005
Institución organizadora:
International Lignin Institute (ILI)
Resumen:
Barcelona, España, 27 - 28 de Abril, 2005 Lignin, a natural polymer found in wood, is a polyaromatic polyol that is readily available and relatively inexpensive. Lignin structure is dependent on wood species and processing conditions, and it is particularly difficult to biodegrade reducing the bioavailability of the other constituents. Commercially, lignin is obtained as a by-product of paper making. It is utilized as a stabilizer (antioxidant) for plastics and rubber as well as in the formulation of dispersants, adhesived and surfactants. The addtition of lignin as fire retardant in two polymeric materials was studied. Flame tests and thermogravimetric analysis were performed in polyurethane foams and polypropylene, respectively. Results show an improvement in fire /degradation behavior for both systems attributed to the high char produced by the lignins during burning.
