Just an update.. I was able to see the 'films' today and they are more
akin to disks of slicone rubber about 1 ml thick... We're going to try
cryogrinding as that seems the best option. She seems dubious of
success....
Other than that, I expect punching little disks out and stuffing them in
might be option #2 though I wonder how you get them back out?
On Mon, Oct 24, 2016 at 2:43 PM, Walt Niemczura <walt_at_hawaii.edu> wrote:
> Hi Ken,
>
> If these files are uniform enough I have had success rolling them up as a
> tube and stuffing them in a rotor. The spinning will flatten them out
> against the wall and I I haven't seen any issues with resolution.
>
> The only other thing I've tried is chopping them up with a razor but that
> is a pain in the butt to load and then unpack.
>
> Walt
>
> On 10/21/16 9:49 AM, Kenneth Knott wrote:
>
> I have a student who wishes to do some 13C CPMAS of polymer films.
> Apparently they are not able to be crushed into a powder as would be idea
> for as CPMAS rotor. What technique is preferred for this analysis?
>
> I'm seen some references to packing the film into the rotor and filling
> the dead space with KBr.
>
> Thanks!
>
> --
> Ken Knott
> Department of Chemistry
> Analytical Services
> Virginia Tech
>
> (540)267-6502 (Cell)
> (540)231-0885 (Office)
>
>
> --
> Walter P. Niemczura, Ph. D.
> NMR/Mass Spec. Facility Director
> Department of Chemistry
> 2545 McCarthy Mall
> University of Hawaii
> Honolulu, HI 96822
> Ph: 808-956-3113
> FAX: 808-956-5908
> Email: walt_at_hawaii.edu
>
>
--
Ken Knott
Department of Chemistry
Analytical Services
Virginia Tech
(540)267-6502 (Cell)
(540)231-0885 (Office)
Received on Mon Oct 24 2016 - 08:50:02 MST