SYNTHESIS AND SURFACE ACTIVITIES OF TWO NEW CHIRAL GEMINI CATIONIC SURFACTANTS
CHEN GANG *
Shaanxi Yanchang Petroleum Oilfield Chemical Technology Co. Ltd, Yan’an, 717400, China and College of Chemistry and Chemical Engineering, Xi’an Shiyou University, Xi’an, 710065, China
NING YANG
College of Chemistry and Chemical Engineering, Xi’an Shiyou University, Xi’an, 710065, China
TANG DEYAO
Shaanxi Yanchang Petroleum Oilfield Chemical Technology Co. Ltd, Yan’an, 717400, China
ZHAO JINGRUI
Shaanxi Yanchang Petroleum Oilfield Chemical Technology Co. Ltd, Yan’an, 717400, China
XU RENJUN
Shaanxi Yanchang Petroleum Oilfield Chemical Technology Co. Ltd, Yan’an, 717400, China
DENG QIANG
Shaanxi Yanchang Petroleum Oilfield Chemical Technology Co. Ltd, Yan’an, 717400, China
*Author to whom correspondence should be addressed.
Abstract
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.
Keywords: Gemini cationic surfactant, critical micelle concentration, foamability, foam-stability