With the gradual strengthening of environmental protection awareness and the increasingly serious plastic problem, the global “plastic ban” related policies have been issued and implemented one after another, which has significantly accelerated the development of the degradable plastic industry.
Degradable plastic refers to a material that can be degraded into environmentally harmless substances under certain circumstances such as sunlight, water, or some natural microbial environments. Its raw materials can be divided into petrochemical-based (such as PBAT, PBS, PCL, etc.) and bio-based (such as PLA, PHA, TPS, etc.). The degradation effect is also divided into full degradation and partial degradation with a biodegradation rate of more than 90%.
Image source: Guo Dexin/Red Net
Currently, the mainstream petrochemical-based raw material on the market is PBAT, which is mainly used in packaging materials, agricultural plastic films and hygiene products. Compared with other petrochemical-based products, PBAT has a higher degree of industrialization and more obvious cost advantages. At the same time, the performance is also excellent. It is an aliphatic and aromatic copolymer, which combines the excellent degradation performance of aliphatic polyester and the good mechanical properties of aromatic polyester. It has good ductility and elongation at break. , also has good heat resistance and impact performance, mechanically and PLA melt blending can also meet the requirements of general plastics.
According to statistics, the total domestic PBAT production capacity in 2022 will be 732,000 tons/year. Due to its low production barriers and huge market potential in the future, domestic production capacity under construction/planned has exceeded 10 million tons; PBAT consumption is expected to exceed 1.24 million tons by 2027.
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