The interaction between polyacrylamide (PAM) and sodium laurate (R^1 COONa) have been studied by viscosity and UV-vis spectroscopy. The reduced viscosity measurements show that PAM/R^1 COONa mixed solution exhibits viscometric behavior of polyelectrolyte. UV-vis spectra indicated that hydrogen bond was formed between PAM and R^1 COOH. And R^1 COOH-R^1 COO^- premicelle or micelle was formed between PAM and R^1 COOH. And R^1 COOH-R^1 COO^- premicelle or micelle was bound to the macromolecule of PAM to form polymer-surfactant complex.

Key words: ULTRAVIOLET SPECTROPHOTOMETRY, POLYACRYLAMIDE, INTERACTIONS