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Preparation method of polybutyrate adipate terephthalate (PBAT) composite material

A technology of butylene terephthalate and polybutylene terephthalate, which is applied in the field of modification of biodegradable polymer materials polybutylene adipate-terephthalate

Inactive Publication Date: 2017-09-29
YANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, hydrophilic nanocrystalline cellulose is incompatible with oily polymers, and nanocrystalline cellulose is easy to agglomerate itself in the polymer. Therefore, chemical modification of nanocrystalline cellulose is to improve its dispersion in the polymer matrix. a necessary means of sex

Method used

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  • Preparation method of polybutyrate adipate terephthalate (PBAT) composite material
  • Preparation method of polybutyrate adipate terephthalate (PBAT) composite material
  • Preparation method of polybutyrate adipate terephthalate (PBAT) composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 1. will PBAT Dry in an oven at 60°C for 24 h to remove moisture.

[0026] According to the dosage ratio of 1g: 2.5ml, the dried PBAT and chloroform into the beaker, and magnetic stirring, until PBAT After complete dissolution, add aNCC Mix thoroughly (wherein, aNCC and PBAT According to the mass ratio of 1:100), a premix is ​​made.

[0027] The obtained premix is ​​uniformly coated, vacuum-dried to remove chloroform, and placed in a twin-screw extruder for melt blending. Control the temperature of the extruder at 130-140°C, the screw speed at 50rpm, and melt blend for 3 minutes. , that is, get PBAT / aNCC composite material.

[0028] 2. Using a hydraulic molding machine, the blend was molded at 130°C and 10 MPa for 3 minutes, and then cold-pressed at room temperature for 5 minutes to make a 1 mm thick sheet for testing.

Embodiment 2

[0030] 1. will PBAT Dry in an oven at 60°C for 20 h to remove moisture.

[0031] According to the dosage ratio of 1g: 2ml, the dried PBAT and chloroform into the beaker, and magnetic stirring, until PBAT After complete dissolution, add aNCC Mix thoroughly (wherein, aNCC and PBAT According to the mass ratio of 3:100), a premix is ​​made.

[0032] The obtained premix is ​​uniformly coated, dried in vacuum to remove chloroform, placed in a twin-screw extruder for melt blending, the temperature of the extruder is controlled at 140°C, the screw speed is 80rpm, and after melt blending for 3 minutes, the get PBAT / aNCC composite material.

[0033] 2. Using a hydraulic molding machine, the blend was molded at 130°C and 10 MPa for 5 minutes, and then cold-pressed at room temperature for 5 minutes to make a 1 mm thick sheet for testing.

Embodiment 3

[0035] 1. will PBAT Dry in an oven at 60°C for 20 h to remove moisture.

[0036] According to the dosage ratio of 1g: 3ml, the dried PBAT and chloroform into the beaker, and magnetic stirring, until PBAT After complete dissolution, add aNCC Mix thoroughly (wherein, aNCC and PBAT According to the mass ratio of 5:100), a premix is ​​made.

[0037] The obtained premix is ​​evenly coated with a film, vacuum dried to remove chloroform, placed in a twin-screw extruder for melt blending, the temperature of the extruder is controlled at 130° C., the screw speed is 50 rpm, and after melt blending for 3 minutes, the get PBAT / aNCC composite material.

[0038] 2. Using a hydraulic molding machine, the blend was molded at 130°C and 10 MPa for 5 minutes, and then cold-pressed at room temperature for 5 minutes to make a 1 mm thick sheet for testing.

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Abstract

The invention provides a preparation method of a polybutyrate adipate terephthalate (PBAT) composite material, and relates to the technical field of material preparation. The preparation method comprises the steps of firstly, dissolving dry PBAT into a solvent, and mixing the obtained solution with acetylated nanocrystalline cellulose to obtain a premixed material; removing the solvent in the premixed material, and then carrying melt blending and extruding by using a double-screw extruder so as to obtain the PBAT composite material. After the technology is adopted, the completely biodegradable composite material is prepared, the good dispersity of the acetylated nanocrystalline cellulose in the PBAT is guaranteed, the mechanical properties of the PBAT are improved, and the application space of the PBAT is enlarged.

Description

technical field [0001] The invention relates to the technical field of material preparation, in particular to the modification technology of polybutylene adipate-terephthalate, a biodegradable polymer material. Background technique [0002] The biodegradable polymer polybutylene adipate-terephthalate is a copolymer composed of aliphatic components and aromatic components. It combines the excellent degradation properties of aliphatic polyesters and the good mechanical and thermal properties of aromatic polyesters, and stands out among biodegradable materials. However, due to the poor mechanical properties of poly(butylene adipate-terephthalate) and its high price, its application is limited. Therefore, looking for effective ways to modify PBAT , and build PBAT The relationship between the structure and performance of modified materials is to expand PBAT effective way to apply. [0003] Natural cellulose is the most abundant biomass resource on earth and the most widely d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L1/12C08J3/21
CPCC08L67/02C08J3/212C08J2367/02C08J2401/12C08L2201/06C08L1/12
Inventor 吴德峰王元堃徐春江王珂杨惠夏沁茹
Owner YANGZHOU UNIV
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