Quiz 8 Flashcards
1
Q
What is the difference between HDPE and LDPE?
A
LDPE is normally transparent, whereas, HDPE is always pigmented
2
Q
What is the effect of crosslinking in polymer chains?
A
Improved strength and resistence to temperature and corrosion.
3
Q
What is the effect of crystallinity on the physical properties of polymers?
A
Increases strength, increased stiffness, increased density and increased melting point.
4
Q
Which of the following is an example of addition polymerization?
A
Polethylene
5
Q
Can polymers become 100% crystalline?
A
No, they normally can be up to 95% crystalline.
