how does the pressure effect crystallinity of polymers?
if samples dried in vacuum will have higher crystalline structure or lower or stays the same ?
i'm guessing that lower pressure will have better crysallinity
with reference please
In most cases the forces between polymer molecules are weak such as London forces, Keesom forces and static dipolar forces. These hold up the crystal structures. Under high pressure these forces will be exceeded and the molecules will be brought closer. This will disrupt the equilibrium between steric repulsion and the above attractive forces causing the molecules to roll and slide on one another, i.e, behaving like a liquid.
Hi
Yes yiu are correct at lower processing pressure they are higly crystaline
Thank you all for your answers ... Can someone provide me with a reference
Thank you
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