4 - Condensation Polymerisation - Polymers Flashcards
What is condensation polymerisation?
Condensation polymerisation is the joining of two monmers with the eliminationof a small molecule (e.g. H2O/HCl).
What does condensation polymerisation require?
Condensation polymersiation requires monomers with two different functional groups. The functional gfroup one one momomer unit bonds to a different functional group on a different monomer.
What happens in the formation of a polyester?
Monomer units are joined together by ester linkages and water is eliminated.
What are the monomers of polyesters?
Molecules containing -COOH, and -OH are the monomers of polyesters. Examples of polyesters are: terylene and Poly(lactic acid).
What are the two types of Polyester?
Polyesters made by reacting two different types of monomer unit (a dicarboxlic acid and diol). Polyesters can also be made by reacting one type of monomer unit containing - -COOH and -OH groups.
Wha is Terylene made from?
Terylene is made from the monomers ethan-1,2-diol and Benzene-1,4-dicarboxylic acid.
What happens when Terylene forms?
A bond forms between the Hydroxyl group on teh doil and teh carboxyl group on the dicarboxylic acid. This is an ester linkage and water is eliminated.
What are polyesters and polyamides used for?
Polyesters and Polyamides are used as fibres in clothing.
What can Polyesters be made from?
Polyesters can laso be made from Hydroxycarboxylic acids, which contain -COOH and -OH.
What is PLA made from?
PLA is made from the monomer lactic acid (2-Hydroxypropanoic acid).
What happens when PLA forms?
A bond forms between a hydroxyl group on one lactic acid molecule and a carboxyl group on a different lactic acid molecule. An ester linkage forms and water is eliminated.
