Condensation Polymers Flashcards
Give examples of condensation polymers
- Polyamides
- Polyesters
- Polypeptide
What is condensation polymerisation?
- Two different types of monomer, each with at least two functional groups
- Functional group reacts with a group on another monomer to form a link creating polymer chains
- Each time a link is formed, water is lost
Give the equation for the formation of nylon6,6 from 1,6-diaminohexane and hexanedioic acid
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What molecules are polyamides formed from?
dicarboxylic acids and diamines
Give the equation for the formation of kevlar from 1,4-diaminobenzene and benzene-1,4-dicarboxylic acid
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Give the uses of nylon 6,6
- Clothing
- Carpet
- Rope
- Airbags
- Parachutes
Give the uses of Kevlar
- Bullet proof vests
- Boat construction
- Car tyres
- Light weight sports equipment
What molecules make up polyesters
Diols and dicarboxylic acids
Give the equation for the formation of Terylene from benzene-1,4-dicarboxylic acid and ethane1,2-diol
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What process produces original monomers
Hydrolysis
What molecules is needed for the process of hydrolysis?
Water
How are monomers from repeating units drawn?
- Break the chain through the middle bond of the amide or ester link
- Add OH or H to each end of the new molecules
Give the equation to show the formation of a dicarboxylic acid and a diamine from an amide link using water
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What type of bonds are found in condensation polymers?
Polar bonds
Describe the effect of condensation polymers having polar bonds
- They are more stronger and rigid than addition polymers
- So as well as vander waals forces, there are permanent dipole-dipole forces and hydrogen bonds between the polymer chains