Wetting Agents in Textile Processing
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Questions and Answers

What is the main purpose of a wetting agent?

  • To change the color of water
  • To reduce the surface tension of water (correct)
  • To make water more dense
  • To increase the surface tension of water
  • What is the surface tension of pure water at 20°C?

  • 72.8 mN/m (correct)
  • 60.0 mN/m
  • 70.0 mN/m
  • 80.0 mN/m
  • What is the effect of wetting agents on the penetration of dyes into a substrate?

  • They have no effect on the penetration of dyes
  • They change the color of the dyes
  • They make it easier for dyes to penetrate (correct)
  • They make it more difficult for dyes to penetrate
  • What is the primary function of wetting agents in wet processing?

    <p>To help water or chemical penetrate the fiber surface</p> Signup and view all the answers

    What is the function of the hydrophobic tail of a wetting agent molecule?

    <p>To repel water molecules</p> Signup and view all the answers

    Wetting agents are used to increase the surface tension of water.

    <p>False</p> Signup and view all the answers

    Wetting agents are molecules with a hydrophilic head and a hydrophobic tail.

    <p>True</p> Signup and view all the answers

    Wetting agents are primarily used in wet processing to accelerate the drying of materials.

    <p>False</p> Signup and view all the answers

    The surface tension of pure water is around 50 mN/m at 20 °C.

    <p>False</p> Signup and view all the answers

    Wetting agents help water-based solutions to spread and penetrate surfaces more easily.

    <p>True</p> Signup and view all the answers

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