alcogeln.
/ˈalkəʊdʒɛl/, U.S. /ˈælkəˌdʒɛl/ Chemistry.
A gel in which the liquid constituent is an alcohol; a gelatinous suspension dispersed in an alcohol.
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alcogel1864
hydrogel1864
aerogel1923
hydrocolloid1926
1864 T. Graham in Proc. Royal Soc. 13 337 If I may be allowed to distinguish the liquid and gelatinous hydrates of silicic acid by the irregularly formed terms of hydrosol and hydrogel of silicic acid, the two corresponding alcoholic bodies now introduced may be named the alcosol and alcogel of silicic acid.
1881 A. H. Smee Suggestions Future Res. 10 With alcogel, the solid combination of alcohol with silicic acid, the process is reversed, alcohol dialysing out, and water entering into combination.
1918 Science 4 Jan. 11/1 The use of the term ‘gel’..and of its modifications, ‘hydrogel’, ‘alcogel’, etc., is deplorably loose and confusing.
1924 H. B. Weiser in R. H. Bogue Theory & Applic. Colloidal Behavior I. xv. 399 A silica jelly containing 11 per cent SiO2 was suspended repeatedly in alcohol and an alcogel was formed having approximately the same volume as the original jelly.
2011 Carbohydrate Polymers 84 1014/1 Hydrogel was converted to an alcogel using multistep solvent exchange with ethanol.
This entry has been updated (OED Third Edition, September 2012; most recently modified version published online December 2021).
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n.1864