Chemistry, additional science

Weak forces

individual tangled chains of polymers, held together by weak intermolecular forces, they are free to slide over each other.

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Strong forces

some plastics have strong inter molecular forces between the polymer chains, called cross links, that hold the chains firmly together.

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Thermosoftening Polymers

Dont have cross-links, easy to melt, you can melt and remould them as many times as you want

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Thermosetting polymers

have crosslinks, a solid structure, it doesnt soften when heated, there strong hard and rigid.

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Properties

Low density:is made by heating etheneto 200 degrees under high pressure, it is flexible, used for bags and bottles.

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Other cards in this set

some plastics have strong inter molecular forces between the polymer chains, called cross links, that hold the chains firmly together.

Strong forces

Dont have cross-links, easy to melt, you can melt and remould them as many times as you want

have crosslinks, a solid structure, it doesnt soften when heated, there strong hard and rigid.

Low density:is made by heating etheneto 200 degrees under high pressure, it is flexible, used for bags and bottles.

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