Method for self-staining catalytic synthesis of degradable polyester material

Abstract

The invention belongs to the field of polymer materials and discloses a method for self-staining catalytic synthesis of a degradable polyester material. The method mainly utilizes a Schiff base-metalcomplex as a catalyst and a dyeing agent to realize one-step self-staining catalytic synthesis of a degradable polyester material. The Schiff base-metal complex is used for a homopolymerization or copolymerization reaction of a lactide monomer, a lactone monomer and a cyclic carbonate monomer. The prepared polymer has molecular weight of 8000-15000 and a monomer conversion rate of 100%. The polymer is red, white, yellow, brown or black under control of synthesis conditions and later dyeing processes are avoided. The method has the advantages of low raw material cost, high use rate and simple synthesis processes and provides a novel approach for promotion and application of degradable polyester materials such as polylactide, polylactone and polycarbonate.

Description

technical field [0001] The invention belongs to the field of polymer materials, and in particular relates to a method for preparing a self-staining catalytically synthesized degradable polyester material. Background technique [0002] With the rapid development of industrial economy, problems such as excessive use of petroleum resources and environmental pollution have gradually become prominent. Among them, the extensive use of non-degradable petroleum-based plastic products (polyethylene, polypropylene, polystyrene, etc.) has caused serious "white pollution". This plastic waste is covering our land, stunting plant growth, suspended on the surface of lakes, and causing anoxic death of fish. The main treatment method of domestic waste in our country is landfill, and the degradation time of petroleum-based plastic products is about 200 years, which is very unfavorable to our human living environment. In view of the above problems, it is extremely urgent to develop biodegrad...

AI Technical Summary

Problems solved by technology

Adding these colorants will affect the various properties of polymer materials. At the same time, in order to achieve the coloring effect, the colorants must be dispersed evenly, which increases the production process steps, increases the cost, and often brings environmental problems.

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