1. The performance advantages of PBAT
Biodegradable materials not only can greatly reduce the impact of waste plastics on the environment, but also can effective carriers for resource recycling and utilization. Various degradable plastics have their own characteristics in terms of performance, practicability, degradability and safety. However, degradable means that the durability of these materials will be relatively poor.
As the two most attractive biodegradable materials PBAT has excellent performance, PBAT has good mechanical properties, good toughness, high thermal stability, but low strength; while PLA has good transparency, biocompatibility and Biodegradable, but because of its short board such as poor heat resistance and poor impact strength.
At present, the degradable plastic products used on a large scale on the market have been modified or compounded. PBAT can be used in combination with PLA to make a composite of PLA and PBAT. It is now a degradable plastic bag widely used by major supermarkets. Raw materials. This kind of plastic bag has the advantages of PBAT and PLA, and various properties such as impact resistance and elongation at break will increase to varying degrees.
2.The technical advantages of PBAT
The PBAT production technology is relatively mature and has a high degree of industrialization. It has become a mainstream product in the degradable plastics industry. It has a broad development prospect. It is currently one of the most active biodegradable plastics research and one of the best degradable materials in the market.
Co-esterification (direct esterification), split-esterification, and tandem esterification are the three commonly used methods for the preparation of PBAT. Domestic enterprises mainly adopt the direct esterification method, which is simple to operate, short in process flow, high in raw material utilization, and reaction time. Short, high production efficiency, but there are also shortcomings such as complex reaction system materials, wide relative molecular mass distribution and difficult to control, which have an impact on product quality. In addition, PBAT has lower technical barriers and the technology is easier to promote, which allows major companies to enter the market in a more comfortable posture to degrade plastics.
3.PBAT's capacity advantage
Chinese PBAT production capacity occupies a leading position in the world, and the technology is relatively mature. According to statistics from the Institute of Biodegradable Materials, since June 2021, domestic PBAT production capacity is planned to exceed 2 million tons per year. According to the plan, more than 400,000 tons of PBAT will be put into production within the year.
