6.2 Biodegradable, fossil-based plastics

Polybutylene succinate (PBS)

• belongs to the polyesters,
• PBS is synthesized by polycondensation of the two monomers succinic acid and 1,4-butanediol
• can be obtained from fossil raw materials, but also from glucose
• is also biodegradable in water
• can be easily processed (printing, welding, production of film)
• Packaging, disposable cutlery, mulch films, composite materials 

Polybutylene adipate terephthalate (PBAT)

• Copolymer/ copolyester
• based on 1,4 butanediol, adipic acid and terephthalic acid
• mostly produced from fossil raw materials
• Similar properties to polyethylene
• good elasticity, thermal resistance
• Biodegradable, compostable in industrial plants
• Production of films for packaging, garbage bags, shopping bags or mulch films
• can also be used with starch to make starch blends