The temperature at which a thermoplastic fiber's intermolecular bonds begin to break down but not melt, called the glass transition temperature, is an essential characteristic in making:____.

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The temperature at which a thermoplastic fiber's intermolecular bonds begin to break down but not melt, called the glass transition temperature, is an essential characteristic in making pleated fabric and textured yarns.

What is transition temperature?

  • The temperature at which a substance transforms from one crystal state (allotrope) to another is known as the transition temperature.
  • Formally speaking, it is the temperature at which a substance can coexist in equilibrium in two crystalline forms.
  • For instance, rhombic Sulphur transforms into monoclinic Sulphur when heated over 95.6 °C; when cooled below 95.6 °C, it returns to its original shape. The two types can coexist at 95.6 °C.
  • Tin is another example, which transforms from a cubic crystal to a tetragonal crystal at a temperature of 13.2 °C.

A transition temperature may be referred to as the Curie temperature in the context of ferroelectric or ferromagnetic crystals.

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