48 - Polymers Flashcards by Maya Walker

Q

What is a polymer?

A

A long chain of monomers

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Q

What determines the properties of a plastic?

A

The bonds between the polymer chains

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Q

What are thermosoftening polymers?

A

Polymers with weak forces between chains

Easy to melt and remould

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Q

What are thermosetting polymers?

A

Polymers with crosslinks between chains

Strong and rigid

Don’t melt or remould

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Q

How do you make low density polyethene?

A

In 200 degrees under high pressure

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Q

How do you make high density polyethene?

A

Low temperature and pressure with a catalyst

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