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Complete the following statements about the crystallinity in polymers by choosing the right answers in the [box]. Most...

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Mechanical Engineering

Complete the following statements about the crystallinity inpolymers by choosing the right answers in the[box].

Most thermoset polymers are[amorphous/crystalline] .

Some thermoplastic polymers are semi-crystalline, meaning theyhave both higherdensity  [amorphous/crystalline] regionsand lowerdensity  [amorphous/crystalline]regions.

In many semi-crystalline polymers, the polymer chains fold into[lamellae/spherulite] structures which can be partof a larger  [lamellae/spherulite]structure which is formed around a nucleation site.

In semi-crystalline polymers, the glass transition temperatureis where there is an increase in the ability of the polymer chainsto move in the  [amorphous/crystalline]regions. The melting point is wherethe  [amorphous/crystalline] regionsturn into a liquid.

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4.2 Ratings (846 Votes)
Answer 1 Amorphous The normal state of most thermoset polymers is to be an amorphous solid at room temperature The arrangement of the polymer molecules is a random arrangement meaning the polymer structure does not have a repeating    See Answer
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