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A2 Chemistry Unit 2 > Polymer Chemistry > Flashcards

Polymer Chemistry Flashcards

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1
Q

What is a monomer

A

Small molecules which join together to form a polymer

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2
Q

What is a polymer

A

Large molecule formed when monomers join together

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3
Q

What is polymerisation

A

Joining together of small molecules to form a large molecule

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4
Q

What is condensation polymerisation

A

Monomers add together to eliminate small molecule

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5
Q

What is a polyester

A

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

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6
Q

Draw an ester linkage

A

See notes

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7
Q

What are two uses of polyethylene Terephthalate (PET)

A

Fibre on clothing

Plastic on drinks bottles

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8
Q

Draw the reaction which forms polyethylene terephthalate and name the reactants

A

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

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9
Q

What is a condensation polymer

A

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

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10
Q

What is significant about polyesters

A

They are biodegradable

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11
Q

What does biodegradable mean

A

Ester link can be hydrolysed

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12
Q

What is the definition of a biodegradable polymer

A

Polymer which can be hydrolysed by action of microorganisms

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13
Q

What are polyamides and how are they formed

A

Condensation polymerisation and they are monomers linked by amide bonds

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14
Q

Draw an amide bond

A

See notes

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15
Q

How is nylon-6,6 formed

A

2 monomers 6 C in each

Can be done by reaction a dicarboxylic acid or a diacytl dichloride with a diamino

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16
Q

What are four uses of nylon

A

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

17
Q

How are polyamides hydrolysed

A

By microorganisms/bacteria

18
Q

Describe the biodegradability of addition and condensation polymers

A

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

A2 Chemistry Unit 2 (12 decks)

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