Chapter 5 - Polymers and Solid Structures

Question 1

What is Amorphous Solid

Answer 1

is a shapeless solid that takes place of its container

Question 2

Glass temperature / TG

Answer 2

is a temperature where the molecules begins to obtain partial freedom of movement

Question 3

Polymerization process - Chain Growth

Answer 3

chain growth is a polymerization process of monomer through a process of chain reaction that occurs after initation through free radicals agent that on heat decomposes into free radicals

Question 4

Name of these compounds and chemical structure
PVC
PVAc
PMMA
PBA

Answer 4

PVC - Polyvinyl Chloride
PVAc - Polyvinyl Acetate
PMMA - Polymethyl Methacrylate
PBA - PolyButyl Acrylate

Question 5

Propagation Sequence of growth steps Termination Occurance
3 Termination Occurances

Answer 5

1. Combination - 2 polymer with free radicals satisfy each other free valencies
2. Disproportionation - when one of the 2 polymers with free radicals donate hydrogen atoms to other and form doublebond to satisfy radical
3. Chain Transfer - basically free radicals is transfered to another compound through the removal of monovalent atom.

Question 6

4 ways to remove hydrogen

Answer 6

1. another monomer molecule
2. a solvent molecule
3. another polymer molecule - which will grow further polymer
4. a compound called a chain transfer agent