What kind of solvent system will be ideal to dissolve Ethyl Cellulose completely. The second part of this question would be to figure out which solvent system would be an ideal one for making the Ethyl Cellulose Gel later on.
Ethyl cellulose is soluble in varying amounts in certain organic solvents, depending upon the ethoxyl content. Ethyl cellulose (containing less than 46-48% of ethoxyl groups) is freely soluble in THF, methyl acetate, chloroform, and aromatic hydrocarbon*/ethanol mixtures. Ethylcellulose (containing 46- 48% or more of ethoxyl groups) is freely soluble in ethanol, methanol, toluene, chloroform, and ethyl acetate.
* Aromatic HCs may include benzene, toluene, and ethylbenzene.
solvent such as di(2-ethylhexyl)phthalate (DOP), dibutyl phthalate (DBP),
diethyl phthalate (DEP), can be use to make gel.
also determine the MW and polydispersity of your sample
this paper by Lizaso et al also would be useful
Formation of Gels in Ethylcellulose Solutions. An Interpretation from Dynamic Viscoelastic Results
(elthyl cellulose + ethanol + acetone + terpineol ) under stirring at 80 C = homogeneous slurry
i have used terpineol as a solvent for ethyl cellulose. its good enough that terpineol has a commendable viscous level. depending on how thick you want your gel. you can start from 9wt% of EC dissolved in terpineol. try to dissolve with magnetic stirring on a hot plate at 60 degrees for 1 hour.
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