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4.02 A Level Chemistry > Polymers > Flashcards

Flashcards in Polymers Deck (15)
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1
Q

Give ways in which a polyester can be formed

A

A dicarboxylic acid and a dialcohol

A hydroxycarboxylic acid

2
Q

How is a hydroxycarboxylic acid able to form a polyester?

A

The carboxylic end of one reacts with the alcohol end of another

3
Q

Give an example of a polyester

A

Terylene

4
Q

Name two uses of terylene

A

Fabrics

Plastics

5
Q

Name the reactants used to form terylene

A

ethane-1,2-diol

benzene-1,4-dicarboxylic acid

6
Q

Give two ways from which a polyamide can form

A

A dicarboxylic acid and a diamine

An amino acid

7
Q

How do the products of base hydrolysis of polyesters differ with that of the acid hydrolysis?

A

Base produces the salt of the carboxylic acid and the alcohol
Acid produces the carboxylic acid and the alcohol

8
Q

What are the conditions for the hydrolysis of polyesters?

A

Aq acid or Aq alkali

Heat

9
Q

What is the difference in products when a polyamide is hydrolysed under acidic conditions versus under basic conditions?

A

Base produces the sodium salt of the carboxylic acid and the diamine
Acid produces the dicarboxylic acid and the ammonium salt of the diamine

10
Q

Which is slower: base or acid hydrolysis?

A

Acid

11
Q

The hydrolysis of addition polymers produces what?

A

Monomers with a non-polar C=C bond

12
Q

The hydrolysis of condensation polymers produces what?

A

Polar monomers

13
Q

Which type of polymerisation forms a biodegradable product?

A

Condensation polymerisation

14
Q

What types of intermolecular forces are present in addition polymers?

A

Just VdW for most

15
Q

What types of intermolecular forces are present in condensation polymers?

A

H bonds in polyamides, dipole-dipole in polyesters