SYNTHESIS AND SURFACE ACTIVITIES OF TWO NEW CHIRAL GEMINI CATIONIC SURFACTANTS

Two new Gemini cationic surfactants were synthesized using L-Tartaric acid, 2-propanol and N,N-dimethylhexadecylamine/ N,N-dimethyldodecylamine (P1 and P2). The new surfactants have four hydroxyl groups, different hydrophilic chains and two chiral centers. The surface activities were evaluated, and the minimum surface tension of P1 and P2 solution were 31.55 mN/m and 28.75 mN/m respectively. The foam-stability and foamability measurements are consistent with those of CMC. It was found that, the two surfactants display different superiority for foam foamability and foam-stability respectively.