Do polymers expand when heated?
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The extent to which the polymer expands or contracts when heated or cooled. ... They contain strong covalent bonds along the polymer chain and much weaker dispersive forces between the polymer chains. As a result, polymers can expand by differing amounts in different directions.)
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The effect of temperature change on polymers
When heated, the polymers will first become flexible before melting. This is due to their structure. When the glassy material is heated, the polymer chains will reach a temperature at which they can move relative to each other (the glass transition temperature
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