High-barrier degradable PBAT material and preparation method and application thereof
A high-barrier, preparation process technology, applied in the field of high-barrier and degradable PBAT materials, to prepare film products, to achieve a wide range of applications, excellent degradability, and good barrier properties
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Embodiment 1
[0034] Example 1 Preparation of high barrier and degradable PBAT
[0035] The preparation steps are as follows:
[0036] (1) Mix 2,5-furandicarboxylic acid and butanediol at a molar ratio of 1:1.15, add 3‰ antimony trioxide catalyst, and react under the conditions of 240°C, nitrogen atmosphere, and pressurization to 1.5 Mpa After 3-4 hours, the sample was extracted for testing. The number average molecular weight of the prepolymer was about 1000 g / mol, and the viscosity was about 0.15 dL / g. It was sealed as prepolymer A for future use.
[0037] (2) Mix terephthalic acid and butanediol at a molar ratio of 1:1.2, add 3.5‰ antimony trioxide catalyst, and react for 4-5 at 230°C, nitrogen environment, and pressurized to 1.5 Mpa h, the sample was extracted for testing, the number average molecular weight of the prepolymer was about 2000 g / mol, the viscosity was about 0.15 dL / g, and it was sealed as prepolymer B for future use.
[0038] (3) Mix adipic acid and butanediol at a molar...
Embodiment 2
[0044] Example 2 Preparation of high barrier and degradable PBAT
[0045] The preparation steps are as follows:
[0046] (1) Mix 2,5-furandicarboxylic acid and butanediol at a molar ratio of 1:1.12, add 3‰ antimony trioxide catalyst, and react under the conditions of 240°C, nitrogen atmosphere, and pressurization to 1.5 Mpa After 3-4 hours, the sample was extracted for testing. The number average molecular weight of the obtained prepolymer was about 2000 g / mol, and the viscosity was about 0.20 dL / g. It was sealed as prepolymer A for future use.
[0047] (2) Mix terephthalic acid and butanediol at a molar ratio of 1:1.15, add 3.5‰ of antimony trioxide catalyst, and react for 4-5 at 230°C, nitrogen environment, and pressurized to 1.5 Mpa h, the sample was extracted for detection, and the number average molecular weight of the obtained prepolymer was about 3000 g / mol, and the viscosity was 0.40 dL / g, which was sealed as prepolymer B for later use.
[0048] (3) Mix adipic acid a...
Embodiment 3
[0054] Example 3 Preparation of high barrier and degradable PBAT
[0055] The preparation steps are as follows:
[0056] (1) Mix 2,5-furandicarboxylic acid and butanediol at a molar ratio of 1:1.05, add 3‰ antimony trioxide catalyst, and react under the conditions of 240°C, nitrogen atmosphere, and pressurization to 1.5 Mpa After 3-4 hours, the sample was extracted for testing. The number average molecular weight of the obtained prepolymer was about 1500 g / mol, and the viscosity was about 0.18 dL / g. It was sealed as prepolymer A for future use.
[0057] (2) Mix terephthalic acid and butanediol at a molar ratio of 1:1.1, add 3.5‰ antimony trioxide catalyst, and react for 4-5 at 230°C, nitrogen environment, and pressurized to 1.5 Mpa h, the sample was extracted for testing, and the number average molecular weight of the obtained prepolymer was about 2200 g / mol, and the viscosity was about 0.20 dL / g, which was sealed as prepolymer B for future use.
[0058] (3) Mix adipic acid ...
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