interlude Posted December 26, 2023 Share Posted December 26, 2023 Can anyone think of a natural polymer that is ethanol soluble and water insoluble? Link to comment Share on other sites More sharing options...
John Cuthber Posted December 26, 2023 Share Posted December 26, 2023 Ethyl cellulose is not natural. Link to comment Share on other sites More sharing options...
Grasshopper Posted February 5 Share Posted February 5 Hello. As stated by the previous answer, ethyl cellulose isn't a natural polymer though its synthesis involves cellulose (obviously). Are you asking the question because you want to find a natural alternative to ethyl cellulose? I can think of some natural polymers that are water-insoluble. Gutta-percha, lignins, cellulose itself of course, shellac (in some pH ranges)... but a lot of these will be ethanol-insoluble. Shellac might be an interesting choice, depending on what you want it for. Link to comment Share on other sites More sharing options...
willferral Posted Monday at 10:02 PM Share Posted Monday at 10:02 PM I've read that some types of cab [ cellulose acetate butyrate ] with a high level of butyryl can be soluble in alcohol. Not actually a natural resin but made with cellulose so it's pretty close. For actual natural resin ,Shellac of course is soluble in ethanol alcohol. I think some types of copal also are, they dissolve quicker than the shellac. Also the modified Rosin Fumaric Resin [ not sure if you would consider it natural] it' seems pretty close to me, it is soluble in alcohol and dissolves super quick in my experience. Link to comment Share on other sites More sharing options...
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