O- Polymers =) Flashcards
1
Q
Explain why polyesters are biodegradable but polyalkenes are not biodegradable. (2)
A
- polyesters- polar C=O bond vs polyalkenes- only non-polar C-C bonds
- polyesters ↑ susceptible to nucleophilic attack
2
Q
Which polymer has hydrogen bonding between its chains?
[1 mark]
A Kevlar
B Polythene
C PVC
D Terylene
A
A
3
Q
Plasticisers are often added during the manufacture of PVC.
State why a plasticiser is added. (1)
A
make it ↑ flexible
