I would like to dry polymer from DMSO solution without using high temperature or very low pressure. Maybe any extraction for polyesters solutions? And then drying from another soluent? Any suggestions?
hello, i think there are two possible solutions:
1) check your polyester solubility in chloroform: if your polyester is soluble in chloroform, use water and chloroform in order to solvent extraction.
2) check your polyester molecular weight: if your polyester molecular weight is high, you may use dialysis bag for solvent extraction.
You may choose a non-solvent of the polymer and moderate solvent of DMSO to precipitate the product. For example, add your dispersion drop by drop with stirring in a slight excess of water to get the ppt of polyester and separate it by simple filtration. Finally, dry it in a vacuum desiccator or in a fridge.
DMSO and DMF are not the easiest solvents to remove. However you could try extraction using soxhlet and a missible, volatile solvent (alcohols). Consider the characteristics of your network/polymer of course.
I once used DMSO in one of my research projects in polymer chemistry. It has a very bad smell. I remember washing it with excess water from my water-insoluble polymer & that worked alone. After soaking the polymer in water, a solution came out & it was removed by filtration. Then re-drying the polymer was done in the hood.
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