Topic 24- Polymers

Question 1

Examples of condensation polymers

Answer 1

Polyamides
Polyesters
Polypeptides

Question 2

Why are condensation polymers stronger than addition polymers

Answer 2

They have polar bonds
Thus they have dipole-dipole forces

Question 3

Why are condensation polymers less stable than addition polymers + therefore biodegradable

Answer 3

They have polar bonds
They are more suceptible to attack from free radicals

Question 4

+’s and -‘s landfill

Answer 4

Cheap and easy
No sorting required
Requires a specific area of land
Releases methane and contaminates water supplies

Question 5

+’s and -‘s of incineration

Answer 5

Produces electricity
Releases toxic gases
Releases carbon dioxides

Question 6

Recycling +’s and -‘s

Answer 6

• Reduces the amount of waste going into landfill
• Saves raw materials
• It is cheaper than making new plastics
• Technically difficult
• Has to be sorted
• You cant remake the original plastic
• It can easily be contaminated

Question 7

What makes a polyamide

Answer 7

Dicarboxylic acid and diamine

Question 8

Examples of polyamides and what are they used for

Answer 8

Nylon 6,6 (made from 1,6 - diaminohexane and hexanedioic acid)
Uses: clothing, carpet and rope

Kevlar (made from 1 - 4 diaminobenzene and benzene-1,4-dicarboxylic acid)
Uses: light weight sports equipemtn and bullet proof vests

Question 9

What makes up a Polyester?

Answer 9

Dicarboxylic acid and Diol

Question 10

Examples of polyester and uses

Answer 10

Terylene (benzene-1,4-dicarboxylic acid and ethane-1,2-diol)
Uses: Plastic bottles, clothing and sails

Question 11

Which polymer has hydrogen bonding between chains

Answer 11

Kevlar