Polymers Flashcards
1
Q
What does HDPE mean?
A
High density poly(ethene)
2
Q
What are the properties of LDPE?
A
Many branches, weak bonds, and low melting point
3
Q
What are the properties of HDPE?
A
Few branches, strong bonds and high melting point
4
Q
What is thermosoftening?
A
Soften when heated and can be re shaped, then heated again and able to shape. The chain of polymers are able to slide past eachother allowing flexibility
5
Q
What is thermosetting?
A
This is when it doesn’t soften when heated and can’t be reshape do, this is because the polymer chains are joint by Cross links which don’t allow flexibility
6
Q
What does LDPE mean?
A
Low density poly(ethene)
