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http://dx.doi.org/10.14478/ace.2018.1021

Effects of Temperature on the Rheology of Lecithin/CaCl2 Organogels  

Jung, Yeon-Geon (Department of Chemical Engineering, The Kumoh National Institute of Technology)
Lee, Hee-Young (Department of Chemical Engineering, The Kumoh National Institute of Technology)
Publication Information
Applied Chemistry for Engineering / v.29, no.2, 2018 , pp. 244-247 More about this Journal
Abstract
Lecithin, a zwitterionic phospholipid, forms spherical reverse micelles in organic solvents such as decane. The addition of multivalent ions like calcium chloride to lecithin organosols induces the transformation of organosols into organogels. A variety of applications of such organogels were found in gelation of fuels, food processing and drug delivery. Here, we investigated the effect of temperature on their rheological properties. In particular, the organogels showed a distinct melting temperature (${\sim}95^{\circ}C$) and their elastic properties decreased with increasing temperature. This is maybe due to the fact that the electrostatic interaction between lecithin and calcium chloride could be weaken with increasing temperature.
Keywords
organogel; rheology; temperature; $lecithin/CaCl_2$;
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