Condensation polymerisation Flashcards
What does condensation polymerisation usually involve?
Two different types of monomers
What do the monomers have to have?
At least 2 different functional groups on the ends of the molecules
What is released when the monomers joined?
Small molecule, usually water
What are three examples of condensation polymers?
Polyamides
Polyesters
Polypeptides
What two molecules make up polyamides?
Dicarboxylic acids
Diamines
What type of link is formed in a polyamide?
Amide link
What is an amide link?
O H
ll l
C —-N
What is nylon 6,6 an example of?
Polyamide
What is nylon 6,6 made up of?
Hexanedioic acid
1,6-diaminohexane
What are some characteristics of nylon?
Strong
Resistant to abrasion
What is nylon used in?
Clothing Carpet Rope Airbags Parachutes
What is Kevlar an example of?
Polyamide
What is Kevlar made up of?
Benzene-1,4-dicarboxylic acid
1,4-diaminobenzene
What are some characteristics of Kevlar?
Light
Very strong
What is Kevlar used in?
Bulletproof vests
Boat construction
Car tyres
Lightweight sports equipment
What are polypeptides made up of?
2 amino acids
Why can amino acids react together?
They have an amine group one one side and a carboxylic acid group on the other
What link forms in polypeptides?
Peptide (amide) link
What are polypeptides a type of?
Polyamide
What are polyesters made up of?
Dicarboxylic acids
Diols
What parts of the components of a polyester react?
Hydroxyl group on the diol and the carboxyl group on the dicarboxylic acid
What type of link is formed in a polyester?
Ester link
What makes up an ester link?
O
ll
C — O
What is terylene an example of?
Polyester
What makes up terylene?
Benzene-1,4-dicarboxylic acid
Ethane -1,2-diol
What are some characteristics of terylene?
Stable both cold and hot
What is terylene used in?
Food containers for ready meals Plastic bottles Clothing Sheets Sails
How can a polymer be turned back into its monomers?
Hydrolysis
Adding water
What bonds are found within chains?
Induced dipoles
Permanent dipoles
What bonds are found between chains?
Strong hydrogen bonds
