Polymers

Question 1

how are condensation polymers formed

Answer 1

They are formed from reactions between monomers that contain at least two functional groups.The functional groups on each monomer react, forming links between repeat units

Question 2

what are polyesters

Answer 2

condensation polymer formed in reaction between dicarboxylic acids (or derivatives such as acyl chlorides) and diols. The carboxyl (-COOH) and hydroxyl (-OH) groups react, forming ester links in the polymer chain

Question 3

draw the polyester formed from benzene-1,4-dicarboxylic acid and ethane-1,2-diol

Answer 3

Question 4

what are polyamides

Answer 4

polymers formed when the OH group from a dicarboxylic acid reacts with a H from a diamine

Question 5

what are polypeptides

Answer 5

polymers formed from two amino acids carboxyl group (CHO) of one amino acid reacts with the amine group of another (NH3)

Question 6

what causes polarity in condensation polymers

Answer 6

polar covalent bonding of functional groups eg amides

Question 7

how do polar linkages affect their properties

Answer 7

stronger intermolecular forces More rigid and less flexible.Stronger, with higher melting and boiling points compared to addition polymers