Extruded starch-lignin foams

Extruded starch foams are well known as biodegradable alternatives to foamed polystyrene packaging materials. Extruded foams of unmodified starch replacing 1% to 20% of the starch with kraft lignin were prepared. At 10% lignin, there are no deleterious effects on foam density, morphology, compressiv...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
1. Verfasser:	Stevens, Eugene S
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS GENERAL PROCESSES OF COMPOUNDING INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL WORKING-UP
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	Extruded starch foams are well known as biodegradable alternatives to foamed polystyrene packaging materials. Extruded foams of unmodified starch replacing 1% to 20% of the starch with kraft lignin were prepared. At 10% lignin, there are no deleterious effects on foam density, morphology, compressive strength, or resiliency as compared to a starch extruded foam, yet the foam retains its integrity after immersion for 24 hours in water. At 20% lignin there is a decrease in compressive strength and resiliency. Addition of cellulose fibers restore the mechanical properties but with an increase in density.