Water-Soluble Copolymers. 53. (23)Na NMR Studies of Hydrophobically-ModifiedPolyacids: Copolymers of 2-(1-Naphthylacetamido) ethylacrylamide with Acrylic Acid and Methacrylic Acid

摘要

Hydrophobic modification of polyelectrolytes can impart desirable properties tocopolymers in aqueous solution. For example, hydrophobic substituents of properly-tailored systems can associate in aqueous solution to form microheterogenous domains. Closed' or intramolecular associations may induce surface active qualities, while 'open' or intermolecular associations may lead to viscosification aqueous media. The organization of the microheterogeneous associates and responsiveness to changes in pH and ionic strength dictate the usefulness of such systems in applications ranging from phase transfer to rheology modification. jg p.3.