Topic 24- Polymers Flashcards
Examples of condensation polymers
Polyamides
Polyesters
Polypeptides
Why are condensation polymers stronger than addition polymers
They have polar bonds
Thus they have dipole-dipole forces
Why are condensation polymers less stable than addition polymers + therefore biodegradable
They have polar bonds
They are more suceptible to attack from free radicals
+’s and -‘s landfill
Cheap and easy
No sorting required
Requires a specific area of land
Releases methane and contaminates water supplies
+’s and -‘s of incineration
Produces electricity
Releases toxic gases
Releases carbon dioxides
Recycling +’s and -‘s
- 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
What makes a polyamide
Dicarboxylic acid and diamine
Examples of polyamides and what are they used for
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
What makes up a Polyester?
Dicarboxylic acid and Diol
Examples of polyester and uses
Terylene (benzene-1,4-dicarboxylic acid and ethane-1,2-diol)
Uses: Plastic bottles, clothing and sails
Which polymer has hydrogen bonding between chains
Kevlar
