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A2 Chemistry Unit 2 > Polymer Chemistry > Flashcards

Flashcards in Polymer Chemistry Deck (18)
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1

What is a monomer

Small molecules which join together to form a polymer

2

What is a polymer

Large molecule formed when monomers join together

3

What is polymerisation

Joining together of small molecules to form a large molecule

4

What is condensation polymerisation

Monomers add together to eliminate small molecule

5

What is a polyester

Formed by condensation polymerisation reaction between dicarboxylic acid and diol
Held together by ester linkages

6

Draw an ester linkage

See notes

7

What are two uses of polyethylene Terephthalate (PET)

Fibre on clothing
Plastic on drinks bottles

8

Draw the reaction which forms polyethylene terephthalate and name the reactants

See notes
Benzene-1,4-dicarboxylic acid
Ethan-1,2-diol

9

What is a condensation polymer

Polymers former by the elimination of small molecules such as H2O or HCl when molecules join together

10

What is significant about polyesters

They are biodegradable

11

What does biodegradable mean

Ester link can be hydrolysed

12

What is the definition of a biodegradable polymer

Polymer which can be hydrolysed by action of microorganisms

13

What are polyamides and how are they formed

Condensation polymerisation and they are monomers linked by amide bonds

14

Draw an amide bond

See notes

15

How is nylon-6,6 formed

2 monomers 6 C in each
Can be done by reaction a dicarboxylic acid or a diacytl dichloride with a diamino

16

What are four uses of nylon

Textiles for clothing/carpet
Tyre cords
Ropes
Cast into solid shapes - cogs

17

How are polyamides hydrolysed

By microorganisms/bacteria

18

Describe the biodegradability of addition and condensation polymers

⭕️ Polymers can be hydrolysed
⭕️ Addition polymers - in environment for thousands of years
⭕️ condensation polymers biodegrade