3 - Metals, Ceramics, Polymers

Question 1

3. 34 Why are water molecules able to penetrate between polymer chains?
   - Positives of this?
   - Negatives of this?

Answer 1

This is due to weak secondary bonds in polymers

+: Water absorption is the main factor in correcting the 0.5% processing shrinkage that occurs during denture base processing
-: Ions in the water may cause the polymer to break down more rapidly, becoming stained or malodorous