How is modulus likely to be affected when toughness modifiers are ...

[jessicacav]

How is modulus likely to be affected when toughness modifiers are added to a plastic? Why?
 
  What will be an ideal response?

Question 2

Explain the effects of crosslinking on the glass transition temperature.
 
  What will be an ideal response?

[xiaomengxian]

Answer to Question 1

Modulus will likely be reduced because the toughness modifiers will have longer elongations than will the base polymer and will therefore decrease stiffness

Answer to Question 2

Crosslinks tie the molecular chains together and make long-range movements more difficult. Therefore, as the amount of crosslinking increases, the glass transition temperature should also increase.