Enhanced thermoplastic starch composite material and preparation method thereof

• Main Authors: WANG ZHILIN, WANG GUOFENG, XUE YANJING
• Format: Patent
• Language: Chinese; English
• Published: 20.10.2017
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; GENERAL PROCESSES OF COMPOUNDING; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; WORKING-UP

The invention relates to an enhanced thermoplastic starch composite material and a preparation method thereof, and belongs to the technical field of thermoplastic macromolecule materials. The preparation method comprises the following steps of loading modified starch, toughening filler, and hemp cellulose into a double-screw extruder, plasticizing, extruding, and granulating, so as to obtain the enhanced type thermoplastic starch composite material, wherein the modified starch comprises radiation starch, a plasticizer and deionized water; the radiation starch is starch radiated by 60 Co-gamma rays; the toughening filler is selected from one of polyvinyl alcohol P6000, polyvinyl alcohol P10000 and polyvinyl alcohol P20000; the hemp cellulose is prepared by crosslinking and modifying vapor-blast cellulose and glutaraldehyde, and modifying surface by succinic anhydride. The preparation method has the advantages that the cellulose in the hemp fiber is extracted by a blasting method, and is crosslinked and modifie