Condensation polymers

Question 1

How do you classify amides?

Answer 1

primary - connected to one carbon with a double bond to oxygen
secondary = connected to two carbons, one of which having a double bond to oxygen
tertiary = connected to three carbons, one of which being a double bond to oxygen

Question 2

What are the two types of polymer?

Answer 2

• polyester
• polyamide
• these are made from carboxylic acid derivatives
• these monomers join and loose water or hcl

Question 3

What are the two ways you can form a polyester?

Answer 3

• monomers are joined by an ester linkage, to form a polymer
• this is either two monomer containing both a carboxylic acid and an diol group
• or from two monomers, one which is a dicarboxylic acid and the other which is a diol

Question 4

Draw a diagram of an ester bond between two monomers with both a carboxylic acid functional group and an hydroxyl

Question 5

Draw a diagram of an ester bond between two monomers, one with a dicarboxylic acid and another with a diol

Question 6

What are the two ways you can form a polyamide?

Answer 6

• from two monomers with both an amine and carboxylic group
• two monomers, one with a dicarboyxlic acid group or one with diol
• forms an amide linkage

Question 7

Draw a diagram of amide linkage between two monomers, one with both functional group and the other with one diamine and a dicarboxylic acid

Question 8

What are the two ways to hydrolyse condensation polymers?

Answer 8

• hot alkali
• hot acid

Question 9

what are the products of base hydrolysis of polyesters?

Answer 9

• A salt and a diol
• NAOH/H20

Question 10

what are the products of acid hydrolysis of polyesters?

Answer 10

• A dicarboxylic acid and a diol
• H+/H20

Question 11

what are the products of base hydrolysis of polyamides?

Answer 11

• a salt and diamine
• NAOH/H20

Question 12

what are the products of acid hydrolysis of polyamides?

Answer 12

• forms a molecule with two ammonia groups and a dicarboxylic acid
• H+/H20