Abstract
Experiments have shown that monolayers can be transferred from the surface of aqueous subphase to wet gel-cellulose by the method of Blodgett and Langmuir. Preparations having as many as 30 successive monolayers of calcium stearate and as many as 15 successive monolayers of polymer have been made in this way. These coatings are stable when stored dried but coatings prepared from monolayers of a single compound deteriorate during wet storage. Stability to wet storage can be increased by preparing coatings with alternating pairs of acidic and basic polymers. Especially stable preparations can be made by lifting monolayers of an insoluble acidic (or basic) polymer that have been allowed to react before lifting a soluble basic (or acidic) polymer.
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