Biodegradable materials are materials that can be completely broken down into low molecular compounds by microorganisms (e.g., bacteria, fungi, and algae, etc.) under natural environmental conditions of appropriate and demonstrable duration. Currently, they are mainly divided into four main categories: polylactic acid (PLA), PBS, polylactic acid ester (PHA) and polylactic acid ester (PBAT).
PLA has biosafety, biodegradability, good mechanical properties and easy processing, and is widely used in packaging, textile, agricultural plastic film and biomedical polymer industries.
PBS can be used in packaging film, tableware, foam packaging materials, daily-use bottles, medicine bottles, agricultural films, pesticide fertiliser slow-release materials and other fields.
PHA can be used in disposable products, surgical gowns for medical devices, packaging and composting bags, medical sutures, repair devices, bandages, orthopaedic needles, anti-adhesion films and stents.
PBAT has the advantages of good film-forming performance and convenient film blowing, and is widely used in the fields of disposable packaging films and agricultural films.