Method for self-staining catalytic synthesis of degradable polyester material

A technology for degrading polyester and polyester materials, applied in the field of polymer materials, can solve the problems of increasing process steps and increasing costs, and achieves the effects of simple synthesis process, high utilization rate and low cost of raw materials

Inactive Publication Date: 2018-06-15
FOSHAN UNIVERSITY
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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

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  • Method for self-staining catalytic synthesis of degradable polyester material
  • Method for self-staining catalytic synthesis of degradable polyester material

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Embodiment Construction

[0019] The present invention will be further elaborated below by means of specific examples and combinations, but it should not be understood as limiting the protection scope of the present invention. Those skilled in the art can make some non-essential changes and adjustments according to the contents of the above invention, which all belong to the present invention. protected range.

[0020] In the method of the present invention, the Schiff base metal complex and one or two monomers are put into a reaction kettle, vacuumized and nitrogen filled for three times, then stirred and heated to a set temperature to start polymerization. After the polymerization reaction is over, the polymerization product in the reactor is taken out, and samples are taken for relevant structure and performance tests. The polymerization product is a self-dyed degradable polyester material, and the monomer conversion rate reaches more than 95%.

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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...

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Application Information

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IPC IPC(8): C08G63/08C08G63/83C08G63/82C08G63/64C08G64/30C08G64/20
Inventor 许泳行林丽苗李忠刘金文吴静姝张敏苗磊
Owner FOSHAN UNIVERSITY
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