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Effect of Cosurfactant on Microemulsion Formation and Cleaning Efficiency in Systems Containing Alkyl Ethoxylates Nonionic Surfactant, D-Limonene and Water  

Lee, Jong Gi (Aekyung R&D Center)
Bae, Sang Soo (Aekyung R&D Center)
Cho, In Sik (Aekyung R&D Center)
Park, So Jin (Department of Chemical Engineering, Chungnam University)
Park, Byeong Deog (Neopharm, Co., LTD.)
Park, Sang Kwon (Department of Chemical and Biochemical Engineering, Dongguk University)
Lim, Jong Choo (Department of Chemical and Biochemical Engineering, Dongguk University)
Publication Information
Applied Chemistry for Engineering / v.16, no.5, 2005 , pp. 664-671 More about this Journal
Abstract
In this study, the effect of sosurfactant on microemulsion phase behavior was investigated in ternary systems containing alkyl ethoxylates nonionic surfactant, water and d-limonene. The addition of a cosurfactant produced a microemulsion phase over a wide range of temperature and promoted formation of a microemulsion phase at lower temperatures. In particular, small amounts of n-propanol, as a cosurfactant, were found to be the most effective in extending a microemulsion phase region over a wide range of temperature. Temperature sensitivity of a nonionic surfactant system was effectively relieved by addition of the anionic surfactant sodium dodecyl sulfate. And the formation of one phase microemulsion was not affected by pH, hardness concentration and addition of an antioxidation agent. The cleaner candidates were determined from microemulsion phase behavior study, and their cleaning efficiency was tested using a dipping method. All the cleaner candidates selected during this study showed excellent removal efficiency for abietic acid over a temperature range from 30 to $40^{\circ}C$ presumably due to a decrease in interfacial tension.
Keywords
microemulsion phase behavior; nonionic surfactant; cosurfactant; cleaning efficiency;
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