Associating behaviour of polyacrylamide modified with a new hydrophobic zwitterionic monomer

✍ Scribed by Bruno Grassl; Jeanne Francois; Laurent Billon

• Publisher: John Wiley and Sons
• Year: 2001
• Tongue: English
• Weight: 168 KB
• Volume: 50
• Category: Article
• ISSN: 0959-8103
• DOI: 10.1002/pi.751

✦ Synopsis

Abstract

The nucleophilic ring opening of dicyanoketene ethylene acetal by tertiary amino monomers leads to an hydrophobic zwitterionic monomer [(dimethylammonioethoxy)dicyanoethenolate]propylmethacrylamide (DADPMA) characterized by a very high dipole moment. Hydrophobically modified water soluble polymers have been prepared by classical radical polymerization of acrylamide and DADPMA either in homogeneous medium (water/ethanol mixtures) or in micellar solution (water containing sodium dodecylsulphate (SDS)). The copolymers obtained have a high molecular weight (M~w~ = 2–5 × 10^6^ g mol^−1^) and are water soluble for a content of DADPMA lower than 1% mole/mole. The properties of the copolymers in aqueous solution depend on the synthesis conditions, especially on the ratio ethanol:zwitterionic monomer.

© 2001 Society of Chemical Industry