Polymers 2 Flashcards
1
Q
What are the 5 regions of viscoelastic?
A
glassy , transition, rubbery, rubbery flow, liquid
2
Q
Does increase in temp and plasticisers increase or decrease inter chain bonding?
A
decrease
3
Q
What are plasticisers?
A
small molecules that dissolve in the polymer and interact with it
4
Q
What are glassy polymers like?
A
hard and brittle
5
Q
Give the properties of transition polymers and what is Tg?
A
flexible leathery not brittle
Tg= glass transition temp
6
Q
What is the characteristics of rubbery and rubbery flow polymers?
A
rubbery - like elastic band
rubbery flow - like blue tac deforms under pressure
