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】![](/moin_static193/solenoid/img/up.png) : 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】![](/moin_static193/solenoid/img/up.png) : 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】![](/moin_static193/solenoid/img/up.png) : 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】![](/moin_static193/solenoid/img/up.png) : 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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