PHA (polyhydroxyalkanoate) modified full-biodegradable plastic for straws

• Main Authors: TAO YANG, CHEN LEI, GAO QIUYAN, ZHU LIU, HUANG GUOCHAO, REN SHIBIN, CHEN QIZAO
• Format: Patent
• Language: Chinese; English
• Published: 18.08.2023
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS

The invention discloses PHA (polyhydroxyalkanoate) modified full-biodegradable plastic for straws, and relates to the technical field of degradable plastics, and the PHA modified full-biodegradable plastic is prepared from the following components: PHA composite modified polylactic acid, modified starch, a plasticizer, stearic acid and zeolite powder. The granularity of the zeolite powder is 500 meshes; the modified starch is prepared from corn starch; according to the invention, polylactic acid is subjected to specific modification treatment, and PHA is introduced as a composite modification component, so that the prepared plastic not only has excellent full-biodegradability, but also has excellent mechanical properties, effectively overcomes the defect of insufficient mechanical properties of a pure polylactic acid plastic product, and is suitable for industrial production. The straw prepared by processing the plastic prepared by the invention has better durability, can be fully biodegraded, does not pollut