Polymers Flashcards

1
Q

What are polypeptides made of

A

Amino acids

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2
Q

What are polyamides made of

A

Diamine and dicarboxylic acid

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3
Q

What are polyesters made of

A

Diol and dicarboxylic acid

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4
Q

What link do polyamides and polypeptides contain

A

-CONH-

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5
Q

What link do polyesters contain

A

-COO ester link

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6
Q

What type of polymer is kevlar

A

Polyamide

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7
Q

What type of polymer is terylene

A

Polyester

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8
Q

Properties and uses of kevlar

A

Lightweight but strong
Bulletprood vests and car tyres

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9
Q

Nylon 6,6 properties and uses

A

Strong robust fabric
Ropes, carpets and clothing

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10
Q

Terylene use

A

Plastic bottles

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11
Q

If a polymer is eaisly hydrolysed does this mean that it will be easy to biodegrade

A

Yes

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12
Q

Where is the polarity in polymers

A

On polar C=O and C-N bonds

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13
Q

Which type of polymer is stronger and why

A

Condensation
Delta charged molecules due to polar bonds mean that hydrogen bonds form within parts of the chain increasing BP and strength

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14
Q

Which type of polymer breaks down more easily in water and why

A

Condenation due to their polar bonds

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15
Q

General uses of condensation polymers

A
  • Non stick pan coatings
  • Plastic bottles
  • Fabric
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16
Q

Name three methods of disposal of plastics

A

Recyling, Incineration and Landfill

17
Q

Negatives of landfill

A
  • Most polymers aren’t biodegradable
  • Methane is produced when plastics are broken down
  • Water contamination
    -Running out of space
18
Q

Negatives of incineration

A

Toxic fumes
HCl from PVC

19
Q

Postivies of incineration

A

Can be used to generate electricity and reduces reliance on landfill

20
Q

Name two ways plastics can be recycled

A

Melt and remould
Crack polymers down to monomers to be used as organic feedstock

21
Q

Advantages of recycling

A

Cheaper to recycle
Less CO2 produced from recycling than incineration
Reduces reliance on landfill and non-renewable resources

22
Q

Disadvantages of recycling

A

Plastics can be contaminated and not be able to be recycled
Difficult due to the wide variety of plastics
Expensive