Antibacterial degradable gas barrier material and preparation method thereof

A technology of gas barrier and degradable materials, which is applied in the field of antibacterial and degradable gas barrier materials and its preparation, can solve the problems of difficulty in meeting the performance requirements of plastic film moisture retention, difficulty in meeting food preservation requirements, weakening gas barrier properties, etc., and achieve easy batch production The chemical production, the preparation method are simple and convenient, and the effect of improving the gas barrier property

Pending Publication Date: 2022-05-13

SHANGHAI PRET COMPOSITES +3

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AI-Extracted Technical Summary

Problems solved by technology

However, degradable materials such as PBAT and other water vapor barrier properties are poor, far lower than PE materials, and it is difficult to meet the moisture retention performance requirements in the use of ...

Method used

From each embodiment shown in table 1 and the test result of comparative example as can be known: from embodiment 1 ~ 3, embodiment 4 ~ 6, embodiment 7 ~ 9 and comparative example 1: add after the modification of ionic liquid For montmorillonite, the water vapor transmission rate of the degradable material is significantly reduced, indicating that the ionic liquid modified montmorillonite helps to improve the gas barrier property of the material. At the same time, with the increas...

Abstract

The invention discloses an antibacterial degradable gas barrier material and a preparation method thereof. The material is composed of the following raw materials in parts by weight: 74-99 wt% of a degradable polymer; 1 to 20 weight percent of ionic liquid modified montmorillonite; 0.1 to 5 wt% of a compatilizer; and 0.01 to 1 wt% of a photoinitiator. The material prepared by the invention has good gas barrier property, has a good inhibition effect on gram negative bacteria and positive bacteria such as escherichia coli and staphylococcus aureus, and also has certain degradation performance. Compared with the same type, the production process is simple, is convenient for industrial production, and is green and environment-friendly.

Technology Topic

PhotoinitiatorAnti bacterial +10

Image

Examples

Experimental program(9)
Comparison scheme(1)

Example Embodiment

[0022] Example 1

[0023] Weigh PBAT 84.45wt%; PLA 10wt%; ionic liquid modified montmorillonite 5wt%; compatibilizer: 0.5wt%; photoinitiator: 0.05wt%. Mix evenly to obtain mixed raw materials.

[0024] The above-mentioned mixed raw materials are placed in the main feeding bin of the intermeshing co-rotating twin-screw extruder, and are added into the barrel of the extruder through the feeding screw. D is 40, the temperature of each zone of the main cylinder from the feeding port to the outlet of the machine head is set as: 140°C, 140°C, 140°C, 150°C, 150°C, 160°C, 160°C, and the speed of the main engine is 200-300 rpm Minutes, through melt extrusion, cooling, granulation, and drying, an antibacterial and degradable material with good gas barrier properties is obtained.

[0025] The above-mentioned degradable materials are blow molded on a film blowing machine, the blow molding temperature is 140°C, and the film thickness is 30-50 μm. The blown film material is irradiated with ultraviolet light for 10s, cooled and rolled up.

[0026] Product performance test:

[0027] The water vapor transmission rate test is carried out with reference to the GB1037 standard, and the antibacterial performance test is carried out with reference to the GB31402 standard. The specific results are shown in Table 1.

Example Embodiment

[0028] Example 2

[0029] Weigh PBAT 79.45wt%; PLA 10wt%; ionic liquid modified montmorillonite 10wt%; compatibilizer: 0.5wt%; photoinitiator: 0.05wt%. Mix evenly to obtain mixed raw materials.

[0030] The above-mentioned mixed raw materials are placed in the main feeding bin of the intermeshing co-rotating twin-screw extruder, and are added into the barrel of the extruder through the feeding screw. D is 40, the temperature of each zone of the main cylinder from the feeding port to the outlet of the machine head is set as: 140°C, 140°C, 140°C, 150°C, 150°C, 160°C, 160°C, and the speed of the main engine is 200-300 rpm Minutes, through melt extrusion, cooling, granulation, and drying, an antibacterial and degradable material with good gas barrier properties is obtained.

[0031] The above-mentioned degradable materials are blow molded on a film blowing machine, the blow molding temperature is 140°C, and the film thickness is 30-50 μm. The blown film material is irradiated with ultraviolet light for 10s, cooled and rolled up.

[0032] Product performance test:

[0033] The water vapor transmission rate test is carried out with reference to the GB1037 standard, and the antibacterial performance test is carried out with reference to the GB31402 standard. The specific results are shown in Table 1.

Example Embodiment

[0034] Example 3

[0035] Weigh PBAT 69.45wt%; PLA 10wt%; ionic liquid modified montmorillonite 20wt%; compatibilizer: 0.5wt%; photoinitiator: 0.05wt%. Mix evenly to obtain mixed raw materials.

[0036] The above-mentioned mixed raw materials are placed in the main feeding bin of the intermeshing co-rotating twin-screw extruder, and are added into the barrel of the extruder through the feeding screw. D is 40, the temperature of each zone of the main cylinder from the feeding port to the outlet of the machine head is set as: 140°C, 140°C, 140°C, 150°C, 150°C, 160°C, 160°C, and the speed of the main engine is 200-300 rpm Minutes, through melt extrusion, cooling, granulation, and drying, an antibacterial and degradable material with good gas barrier properties is obtained.

[0037] The above-mentioned degradable materials are blow molded on a film blowing machine, the blow molding temperature is 140°C, and the film thickness is 30-50 μm. The blown film material is irradiated with ultraviolet light for 10s, cooled and rolled up.

[0038] Product performance test:

[0039] The water vapor transmission rate test is carried out with reference to the GB1037 standard, and the antibacterial performance test is carried out with reference to the GB31402 standard. The specific results are shown in Table 1.

PUM

Property	Measurement	Unit
Film thickness	30.0 ~ 50.0	µm

Description & Claims & Application Information

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Classification and recommendation of technical efficacy words

high gas barrier
well dispersed

Multi-block copolymer based on 2,5-furandicarboxylic acid polyester and aliphatic polycarbonate, and preparation method of multi-block copolymer

ActiveCN110407991Ahigh gas barrierImprove toughness

Owner:ZHEJIANG UNIV

Antibacterial degradable gas barrier material and preparation method thereof

AI-Extracted Technical Summary

Problems solved by technology

Method used

Abstract

Image

Examples

Example Embodiment

Example Embodiment

Example Embodiment

PUM

Description & Claims & Application Information

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