Addition polymers Flashcards

1
Q

What are polymers?

A

Long chain molecules made up of monomers joined together

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2
Q

What is addition polymerisation?

A

Double bonds of alkene open up and join together

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3
Q

What does n stand for when you draw a polymer?

A

The number of repeating units

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4
Q

What is a substituted alkene?

A

An alkene where one of the hydrogen atoms has been swapped for another atom or group

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5
Q

How do you work out what the monomer is?

A

Look at the side bonds and join them up to form double bonds

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6
Q

How do you name a polymer?

A

poly(X)

X is the name of the monomer

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7
Q

Are polyalkenes reactive? Why? Why not?

A

No, very unreactive.

Main carbon chain of the polyalkenes are usually non-polar

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8
Q

Why are longer chains stronger and more rigid?

A

They have stronger intermolecular forces

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9
Q

What is PVC made of?

A

Chloroethene monomers

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10
Q

Why is PVC a hard but brittle material?

A
  • Delta negative charge on chlorine
  • Delta positive charge on carbon
  • Permanent dipole dipole forces between polymer chains
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11
Q

What is PVC used in?

A

Drain pipes and window frames

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12
Q

What does a plasticiser do?

A

When added to a polymer, it makes it more bendy

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13
Q

How does a plasticiser work?

A

Gets in between the polymer chains and pushes them apart

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14
Q

What is plasticised PVC used in?

A

Electrical cable insulation
Flooring tiles
Clothing

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