If your CNT is untreated (as synthesized), try a
non-polar solvent. Probably THF or Toluene will work
well. Or NMP is a good solvent if you don't need a
high vapor pressure of the solvent. 1mg/100mL is not a
very high concentration for a CNT suspension, but you
can make it even more dilute.

Soojin
Chapel Hill

--- Husein Rokadia  wrote:
> Hey Guys,
> I am trying to sonicate Multiwall Carbon Nantoubes
> in Isopropyl Alcohol.
> My current mixing ratio is 1mg of CNT /100 ml of IPA
> for about 2 hours.
> The problem with my current method is that the CNTs
> coagulate very quickly
> after I stop the sonication, I have tried to
> sonicate for a longer duration
> but to no avail.
>
> I am wondering if there is a problem with my
> concentration ratio, or if I
> should  switch to some other solvent?
> Alternately please suggest sonication recipies of
> your own.
>
> Thanking you in anticpation,
>
> Sincerely,
> Husein Rokadia
>
> Husein Rokadia
> University of Arkansas,
> MEEG Rm 223,
> O:479-575-6821
> R:479-871-0033
> Lab:479-575-4150
>
>
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