Preparation method of modified starch-polyvinyl alcohol-based composite plastic film

The invention provides a preparation method of a modified starch-polyvinyl alcohol-based composite plastic film, belonging to the technical field of high polymer materials. The preparation method comprises the following steps of: uniquely oxidizing carbon atoms C2 and C3 in a glucose unit of starch...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	WU ZHANCUI, WANG ZHONGCHAO, LU DEDAI, ZHANG ZHE, XU JIAN, LEI ZIQIANG, CHANG YING
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS DERIVATIVES THEREOF METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS POLYSACCHARIDES PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	The invention provides a preparation method of a modified starch-polyvinyl alcohol-based composite plastic film, belonging to the technical field of high polymer materials. The preparation method comprises the following steps of: uniquely oxidizing carbon atoms C2 and C3 in a glucose unit of starch into an aldehyde group under the action of a strong oxidant; breaking C2-C3 chains to obtain dialdehyde modified starch; and then blending the dialdehyde modified starch with polyvinyl alcohol (PVA), plasticizer, cellulose and the like which are used for synthesizing biodegradation type polymers toobtain the starch-based plastic film with favorable mechanical property, water resistance and degradation. The invention provides an extensive application prospect for the starch-based plastic film.