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How to wet cotton wool without shrinking it?

  1. Jun 14, 2015 #1
    This is probably not a very intelligent question. When cotton wool gets wet, it shrinks. Is it possible to wet it without shrinking? I know that it shrinks because the water surface tension pull cotton wool together.

    These are some technique that I can think of
    - Add surfactant? But this will contaminate water with surfactant.
    -Deposition, opposite of freeze drying (sublimation)

    Thank you.
     
  2. jcsd
  3. Jun 15, 2015 #2

    Hesch

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    Gold Member

    If you are speaking of weaved cotton, here is another explanation:

    After having been weaved, it is stretched (much) so that having been spooled onto a drum, the sucface becomes hard as stone. In this way it is not creased during transport.
    Beeing wet it will simply take up its normal shape/size again.
     
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