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Degradable PBAT composite film and preparation method thereof

A composite film and ring-opening polymerization technology, which is applied in the field of low-odor biodegradable PBAT composite film and its preparation, can solve the problems of film bags with strong odor, affecting development and application, and poor user experience, achieving better smell, Odor reduction and odor improvement effects

Pending Publication Date: 2021-12-03
WANHUA CHEMICAL (NINGBO) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

PBAT has good ductility and elongation at break, and it also has a certain strength after forming a film, but because PBAT increases the shear strength during processing when it is filled with mineral powder, the small molecules contained in PBAT and the decomposition produced The small molecules in the film are easier to emit, resulting in a strong smell in the produced film bag, which gives users a bad experience and affects its further development and application.

Method used

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  • Degradable PBAT composite film and preparation method thereof
  • Degradable PBAT composite film and preparation method thereof
  • Degradable PBAT composite film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] (1) Preparation of Metal Organic Framework (MOF)

[0056] Weigh 100g of zirconium chloride and 100g of 2-aminoterephthalic acid into the flask, add 300mL of N'N dimethylformamide, then add 40mL of deionized water, stir well and transfer to a flask equipped with a polytetrafluoroethylene liner In a high-pressure reactor, react at 150°C for 36h. After the reaction kettle was naturally cooled, 300 mL of N’N dimethylformamide was added to the product, ultrasonically washed for 10 minutes, transferred to a rotary evaporator, and evaporated to dryness at 80°C. The obtained yellow powder was washed three times with methanol in a suction filtration device, and then dried in an oven at 100°C.

[0057] (2) Preparation of modified metal-organic framework (M-MOF)

[0058] Weigh 100g of metal-organic framework prepared in step (1) and 150g of KH-560 into a three-necked flask, add 300mL of N’N dimethylformamide, stir well, and react in an oil bath at 150°C for 8h. After natural co...

Embodiment 2

[0066] The modified metal-organic framework (M-MOF) prepared in Example 1 was used as the raw material, and the PBAT composite film was prepared according to the method in Example 1. The difference was that the proportion of the modified metal framework added was different. For the specific formula, refer to Table 1.

Embodiment 3

[0068] The modified metal-organic framework (M-MOF) prepared in Example 1 was used as the raw material, and the PBAT composite film was prepared according to the method in Example 1. The difference was that the proportion of the modified metal framework added was different. For the specific formula, refer to Table 1.

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Abstract

The invention discloses a degradable PBAT composite film and a preparation method thereof. The degradable PBAT composite film comprises PBAT, a modified metal organic framework, talcum powder, a chain extender and a slipping agent. According to the invention, a coupling agent is adopted to modify the metal organic framework, so the metal organic framework has the functions of adsorbing micromolecules and removing odor, and also can be uniformly dispersed in PBAT together with filler; and the prepared PBAT composite film is easy to process, uniform in dispersion, low in odor and high in performance, and can be used in film packaging materials requiring low odor, such as supermarket vest bags, food packaging bags and the like.

Description

technical field [0001] The invention belongs to the field of degradable materials, in particular to a low-odor biodegradable PBAT composite film and a preparation method thereof. Background technique [0002] With the development of the national economy and the rise of the Internet economy, the consumption of plastic products is also increasing. Among them, the use of plastic packaging in the express delivery industry, such as bubble film and bubble bags, is also increasing simultaneously. Although recycling, crushing, and reuse are currently used to reduce plastic waste, thereby slowing down white pollution, this method is a temporary solution, not a permanent cure. With the implementation of the plastic ban, industries such as express delivery have also begun to seek alternative solutions in advance. Degradable resins have attracted the attention of many researchers and companies due to their degradation characteristics. [0003] Polybutylene terephthalate / adipate (PBAT) ...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08L67/04C08L87/00C08K3/34C08K5/20C08J5/18C08G83/00
CPCC08J5/18C08G83/008C08J2367/02C08J2467/04C08J2487/00C08K3/34C08K5/20
Inventor 詹佐民陈连清祁先勇李保印吴俊邵成立王倩倩黄建李熠宇欧阳洋子袁天楠刘雪婷
Owner WANHUA CHEMICAL (NINGBO) CO LTD
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