1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

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


    User Avatar
    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.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook