p*****x
发帖数: 68 | 1 we have PS, PSS and PEO, none of them dissolves.
thanks. | b**s
发帖数: 589 | 2 PEO can not be dissolved in DMF? impossible
DMF is a good solvent for many polar polymers : nylon, PU, PEO...
use a little bit of heat, try again
【在 p*****x 的大作中提到】
: we have PS, PSS and PEO, none of them dissolves.
: thanks.
| p*****x
发帖数: 68 | 3 the thing is we are using a mixture solvent of DMF and DMSO
thanks
【在 b**s 的大作中提到】
: PEO can not be dissolved in DMF? impossible
: DMF is a good solvent for many polar polymers : nylon, PU, PEO...
: use a little bit of heat, try again
| b**s
发帖数: 589 | 4 Poly(methacrylic acid)
Poly(acrylic acid)
I guess
because DMF and DMSO are both their good solvents
I think you might calculate th solubility parameters of solvent and polymer,
make sure they match.
check out http://www.polysciences.com/ you will get some polymer standard
information
【在 p*****x 的大作中提到】
: the thing is we are using a mixture solvent of DMF and DMSO
: thanks
| p*****x
发帖数: 68 | 5 thanks a lot
polymer,
【在 b**s 的大作中提到】
: Poly(methacrylic acid)
: Poly(acrylic acid)
: I guess
: because DMF and DMSO are both their good solvents
: I think you might calculate th solubility parameters of solvent and polymer,
: make sure they match.
: check out http://www.polysciences.com/ you will get some polymer standard
: information
|
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