polymers Flashcards
1
Q
what determines the properties of plastics
A
the forces between molecules
2
Q
what are the properties of thermosoftening polymers
A
- no cross links between chains
- easy to melt
- cools to make a new shape
3
Q
what are the properties of thermosetting polymers
A
- have crosslinks
- solid structure
- strong, hard and rigid
4
Q
what affects the property of a polymer
A
- the starting materials
- the reaction conditions
5
Q
what does low density polyethene make
A
-bags etc due to the flexibility
6
Q
what does high density polyethene make
A
drain pipes due to the rigid
