Title

Water-Soluble Copolymers .50. Effect of Surfactant Addition on the Solution Properties of Amphiphilic Copolymers of Acrylamide and Dimethyldodecyl(2-Acrylamidoethyl)Ammonium Bromide

Document Type

Article

Publication Date

4-11-1994

Department

Polymers and High Performance Materials

Abstract

The interactions of Surfactants sodium dodecyl sulfate (SDS), trimethyltetradecylammonium bromide (TTAB), and Triton X-100 with amphiphilic copolymers of acrylamide and dimethyldodecyl(2- acrylamidoethy1)ammonium bromide (DAMAB) have been investigated in aqueous solutions. The rheological properties of a copolymer/surfactant system are affected by both the microstructure of the copolymer and the nature of the surfactant. Addition of the nonionic surfactant, Triton X-100, resulted in a large increase in the reduced viscosity for the microblocky copolymers with 5 mol 76 DAW, while a random copolymer with the same composition exhibited a collapsed conformation in the presence of the cationic surfactant, TTAB. A strong viscosity enhancement was observed when SDS was added to the solution of a copolymer containing 0.32 mol 96 DAMAB. Evidence of mixed micelles formed by surfactant molecules and the hydrophobic groups of the copolymers was obtained utilizing surface tension, pyrene probe fluorescence, and viscometry

Publication Title

Macromolecules

Volume

27

Issue

8

First Page

2145

Last Page

2150