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What affects the rate of evaporation in a material?

  1. Jul 10, 2015 #1

    I've been researching hygroscopic materials and evaporation rate a bit lately, and a question has struck me which I haven't found an answer to yet: What material factors affect the rate of evaporation? Is it possible to engineer a material which is hygroscopic (absorbs water) in humid air, but dries really quickly once the air humidity is lowered?
  2. jcsd
  3. Jul 11, 2015 #2


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    Staff: Mentor

    In general, a large surface area speeds up both directions. No idea about specific materials.
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