Hydration of polyethylene glycol monododecyl ethers (C12Ei, for i = 6 and 10) in their diluted aqueous solutions

Add time:07/11/2019    Source:sciencedirect.com

Long-chained ethers with relatively high relation of the number of ether groups to the chain length are interesting because of their ability to form micellar aqueous solutions even in very low concentrations. This behavior has been practically exploited in plant protection products, where micelle-forming components facilitate dissolution of the active ones. The acoustic properties of these ethers are related to the specific hydration of the micelle-forming compounds. In this work, the acoustic method was applied to determine the hydration numbers of two members of the family of the long-chained ethers. Formation of micelles is responsible for the hydration numbers lower than theoretically calculated ones. Thus, the acoustic method was found to be a new indirect one in easy detecting the formation of micelles or other micelle-like aggregates.

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