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Preparation method of hyperbranched polybutylene adipate terephthalate material

A butylene phthalate, hyperbranched polymer technology, applied in sustainable manufacturing/processing, bio-packaging, climate sustainability, etc., can solve the problem of poor melt strength, low heat distortion temperature, and high cost of using PBAT problem, to achieve the effect of mild reaction conditions, simple operation steps and wide application range

Active Publication Date: 2021-02-05
ZHONGBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although PBAT has excellent biodegradability and mechanical properties, the use cost of PBAT is high, the heat distortion temperature is low, the melt strength is poor, the melting point is 110-120°C, and the decomposition temperature is about 190°C. These shortcomings limit PBAT. Used in food packaging and other fields

Method used

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  • Preparation method of hyperbranched polybutylene adipate terephthalate material
  • Preparation method of hyperbranched polybutylene adipate terephthalate material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) 24 g of ethylenediamine and 12.7 g of sodium carbonate were dissolved in 125 mL of deionized water at 80° C., and then the aqueous solution was cooled to room temperature.

[0032] (2) Mix 36.9g of cyanuric chloride and 300mL of acetone, add it into a 500ml three-necked flask, and then gradually add the normal temperature solution in (1) dropwise into the reaction system.

[0033] (3) Stir the mixture at -10-0°C and react for 6 hours; heat up to 20-30°C and react for 6 hours; then raise the temperature to 70-80°C and react for 6 hours. During the polymerization process, a large number of bubbles and White particle.

[0034] (4) The reaction mixture was filtered and washed three times with hot deionized water and acetone respectively. The target product was dried in a vacuum oven at 90° C. for 48 hours to obtain a white solid, which is a triazine ring branching agent.

[0035] (5) Put PBAT, triazine ring branching agent and antioxidant into a twin-screw extruder ac...

Embodiment 2

[0037] (1) 24 g of ethylenediamine and 12.7 g of sodium carbonate were dissolved in 125 mL of deionized water at 80° C., and then the aqueous solution was cooled to room temperature.

[0038] (2) Mix 36.9g of cyanuric chloride and 300mL of acetone, add it into a 500ml three-necked flask, and then gradually add the normal temperature solution in (1) dropwise into the reaction system.

[0039] (3) Stir the mixture at -10-0°C and react for 6 hours; heat up to 20-30°C and react for 6 hours; then raise the temperature to 70-80°C and react for 6 hours. During the polymerization process, a large number of bubbles and White particle.

[0040] (4) The reaction mixture was filtered and washed three times with hot deionized water and acetone respectively. The target product was dried in a vacuum oven at 90° C. for 48 hours to obtain a white solid, which is a triazine ring branching agent.

[0041] (5) Put PBAT, triazine ring branching agent and antioxidant into a twin-screw extruder ac...

Embodiment 3

[0043](1) 24 g of ethylenediamine and 12.7 g of sodium carbonate were dissolved in 125 mL of deionized water at 80° C., and then the aqueous solution was cooled to room temperature.

[0044] (2) Mix 36.9g of cyanuric chloride and 300mL of acetone, add it into a 500ml three-necked flask, and then gradually add the normal temperature solution in (1) dropwise into the reaction system.

[0045] (3) Stir the mixture at -10-0°C and react for 6 hours; raise the temperature to 20-30°C and react for 6 hours; then raise the temperature to 70-80°C and react for 6 hours. During the polymerization process, a large number of bubbles and White particle.

[0046] (4) The reaction mixture was filtered and washed three times with hot deionized water and acetone respectively. The target product was dried in a vacuum oven at 90° C. for 48 hours to obtain a white solid, which is a triazine ring branching agent.

[0047] (5) Put PBAT, triazine ring branching agent and antioxidant into a twin-scre...

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Abstract

The invention belongs to the field of high polymer materials, and particularly relates to a preparation method of a hyperbranched polybutylene adipate terephthalate material, which adopts cyanuric chloride, ethylenediamine and the like as raw materials to gradually react to generate a triazine ring branching agent, the PBAT, the triazine ring branching agent and an antioxidant are put into a double-screw extruder according to a weight part ratio, the materials are uniformly mixed, extruded and granulated, and then the product is prepared by using an injection molding machine; -NH-groups of thebranching agent can react with terminal hydroxyl groups of PBAT to generate the hyperbranched PBAT material with a core-shell structure, so that the comprehensive performance of the material is further improved. Meanwhile, the -NH-group of the branching agent can also react with carboxyl generated by degradation and aging of the waste plastic, so that molecular chain repair and reactive compatibilization are realized. The method provided by the invention has the characteristics of simple operation, mild reaction conditions, high branching agent purity, environmental friendliness, wide application range and the like, and has wide application prospects in the fields of branching of polyester and high valuation of waste plastics.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a preparation method of a hyperbranched polybutylene adipate terephthalate material. Background technique [0002] Since the 20th century, polymer materials have been constantly updated. Due to the non-degradability of most polymer materials, the environment has deteriorated day by day. It is imminent to develop environmentally friendly and degradable polymer materials. Polybutylene adipate / terephthalate (PBAT) is a copolymer of butylene adipate (PBA) and butylene terephthalate (PBT). Although PBAT has excellent biodegradability and mechanical properties, the use cost of PBAT is high, the heat distortion temperature is low, the melt strength is poor, the melting point is 110-120°C, and the decomposition temperature is around 190°C. These shortcomings limit PBAT. Used in food packaging and other fields. In response to these shortcomings, improving the thermal stability and melt ...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08K5/134C08K5/526C08G63/91
CPCC08K5/1345C08K5/526C08G63/916C08L2201/08C08L67/02Y02W90/10
Inventor 李迎春畅贝哲安超董星王文生常磊崔煜蔡迪
Owner ZHONGBEI UNIV
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