Biopolymers

Biodegradable polymers are all biological polymers

• yes

• no

• I don't know

Which one is NOT a biopolymer?

• starch

• casein polymer

• polyethene

• DNA

A biopolymer is a polymer that is

• always biodegradable

• always non-biodegradable

• made directly from living organisms

• a plastic

What is the most common renewable ressource to make PLA?

• bread

• wheat

• corn

• petroleum

PLA means

• polymer light acid

• petroleum liquid acid

• polylactic amine

• polylactic acid

PLA is an interesting biopolymer because... (click all that apply)

• it is made of renewable ressources

• it is biodegradable

• it has plastic properties

• it can make many things from our daily life (like straws)

If you buy a 奶茶, would you be ready to pay 1 yuan more if the straw is in PLA rather than normal plastic?

• yes

• no

Do you think using less plastics in our everyday life is important?

• no, because there are more important things in life

• yes, but I don't do anything for it

• yes, I try to avoid using plastic when I can (bags, bottles, straws, etc.)

• no, because I don't really care about that

What are some important problems of biodegradable polymers?

• They are not real plastics

• They need special unusual conditions to degrade.

• They are extremely expensive

• They can only be made from oil.

Are biodegradable polymers the perfect solution for plastic pollution today?

• Yes, because they are much better than other plastics

• No, because they still present problems

• Yes, because they are very cheap

• No, because they are too expensive and hard to make