PBAT resin and all-biodegradable modified materials

一、 Degradable material PBAT resin and all-biodegradable modified materials

Poly(butylene adipate-co-terephthalate) (PBAT), also known as polybutyrate, is a semi-aromatic, biodegradable thermoplastic copolyester that can be easily molded and thermoformed. PBAT has many attractive properties that are similar to Hpolyethylene. For example, it has relative high elongation at break (30 - 40%) as well as moderate high impact and puncture toughness,and good biodegradability. PBAT blended with PLA or other degradable materials can be made into shopping bags, courier bags, agricultural munching film, food packaging box,knives and forks, straws and other biodegradable products

二、Main Application Areas

Packaging: Fully biodegradable shopping bags, garbage bags on a roll, courier packaging bags, electronic product packaging bags, food packaging bags, etc.

Foodservice: Disposable food containers, cutlery (forks, knives, spoons), straws, etc.

Agriculture: Agricultural mulch film.

Other fields: Biodegradable adhesives, 3D printing consumables, foaming materials, medical absorbable materials, etc.

三、Commonly used systems include:

① PBAT + PLA + starch/calcium carbonate: the most mainstream system, with costs reduced by filling with starch or mineral powder; suitable for film and bag products such as shopping bags and garbage bags.

② PBAT + PLA blends: used in applications requiring higher mechanical properties and transparency.

③ PLA-based modified compounds: suitable for injection-molded or thermoformed products such as straws and food containers that require higher rigidity and heat resistance.

④ PBS and other biodegradable polyester modified compounds: as supplements or alternatives to PBAT.