Biodegradable PBAT Film bag history

The development of degradable 

plastics Overview of the development of degradable plastics 

12 Degradable plastics refer to a class of plastics whose properties can meet the requirements of use and can be degraded into environmentally friendly substances under natural environmental conditions. There are a variety of new plastics, such as photodegradable plastics, biodegradable plastics, photo/oxidation/biodegradable plastics, etc. In recent years, with the improvement of environmental awareness, the research and application of degradable plastics have developed rapidlyDefinition and classification of degradable plastics Degradable plastics can be divided into biodegradable plastics, photodegradable plastics, and chemically degradable plastics according to their degradation mechanisms. Biodegradable plastics refer to plastics that are degraded by microbial action under natural conditions and eventually turn into carbon dioxide, water, methane or mineralized inorganic salts. Common biodegradable plastics include polylactic acid (PLA), polyhydroxyalkanoate (PHA), polybutylene terephthalate (PBAT), etcThe development process of degradable plastics The development of degradable plastics has gone through three main stages: The first stage: photodegradable plastics in the 50s of the 20th century, due to their pseudo-degradability, have been banned worldwideThe second stage: the destructive biodegradable plastics of the 90s of the 20th century, by adding natural substances such as starch and wheat to traditional plastics, but because they are not completely degradable and the overall performance of the plastic is damaged, it is also bannedThe third stage: the biodegradable plastics that have emerged in the past decade can be degraded under natural conditions caused by microbial action, and eventually turn into carbon dioxide, water, methane or mineralized inorganic salts. In recent years, research has focused on improving the punctuality, controllability, complete degradability, and cost-effectiveness of degradable plasticsApplication fields of degradable plastics Degradable plastics have been widely used in many fields: Disposable products: such as tableware, shopping bags, etcAgriculture, forestry, fishery and animal husbandry: used for agricultural mulch film, packaging materials, etcAutomotive industry: used in automotive interiors, parts, etc3D printing: for 3D printing materialsMedical field: used for surgical sutures, bone nails, etcThe future development trend of degradable plastics In the future, the development trend of degradable plastics will focus on the following aspects: Technological progress: research and development of efficient and inexpensive photosensitizers, oxidants, biological inducers, etc., to improve the performance of degradable plastics and reduce costsPolicy support: With the introduction of the plastic ban, the policy will further promote the application of degradable plasticsIncreased market demand: With the increasing awareness of environmental protection, the market demand will further increase, especially in the field of disposable products and packaging materials.