Polymers 1 Flashcards
1
Q
What is the definition of a crystal structure?
A
an anisotropic, homogenous body consisting of a 3D ordering of atoms, ions or molecules
2
Q
What does amorphous mean?
A
random molecular arrangement
3
Q
What factors influence crystallinity?
A
molecular structure
crystalline state is lowest energy
speed & temp of solidification
4
Q
What are molecular contact points called in crystals?
A
nucleation
5
Q
How do crystal polymers form?
A
nucleation
crystal growth
polycrystalline
6
Q
What are semicrystalline polymers?
A
possess both ordered crystalline domains and amorphous regions
