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Hydrophilic polymer that sublimes in vacuum

  1. Jul 24, 2008 #1
    I am trying to find a hydrophilic polymer that sublimes in vacuum (~ 10-7 torr).
    Can anyone help me or tell me where i could find one?
     
  2. jcsd
  3. Jul 25, 2008 #2

    chemisttree

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    Re: Polymer

    What properties do you require of the polymer other than hydrophilic and semi-semi-volatile?
     
  4. Jul 28, 2008 #3
    Re: Polymer

    Nothing else really, we don't need conductivity.
    To tell a little more, I need a polymer to make a thin film (~20 nm) as a barrier between a silver coating and an ionic liquid. (this is for a liquid mirror project)
    Polymer film is made by vacuum deposition, high temperature are obtained by ohmic heating.

    -Silver coating has shown to make better bond with hydrophilic material (hence why hydrophilic polymer).
    -Polymer sublimation helps to make a better surface on the liquid, less irregularities.

    Those are the 2 most important properties.
     
  5. Aug 1, 2008 #4

    chemisttree

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    Re: Polymer

    edit. Let me think about this some....
     
  6. Aug 6, 2008 #5
    Re: Polymer

    I mixed things up, i am more looking for a small-molecule organic materials with said properties, this should be way easier to sublime.
     
  7. Aug 6, 2008 #6

    chemisttree

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    Re: Polymer

    You might try a parylene conformal coat followed by gold deposition and finally silver.
     
  8. Aug 6, 2008 #7
    Re: Polymer

    Thanks, but why gold? We were actually going to try an aluminium or chromium deposition instead.
     
  9. Aug 7, 2008 #8

    chemisttree

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    Re: Polymer

    I was going for non-reactive. You had some concerns regarding the reactivity of silver with the (unspecified) ionic liquid. It's a belt and suspenders thing....
     
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