ABSTRACT
I. Synthesis................................................................................................................ 474 II. Chemical Stability in Water .................................................................................. 475 III. Micellar Properties ................................................................................................ 475
A. Critical Micellization Concentration (CMC)............................................ 475 B. Micelle Ionization Degree......................................................................... 478
IV. Krafft Temperature ................................................................................................ 478 V. Basic Properties as Shampoo Detergent............................................................... 479
A. Foaming Capacity ..................................................................................... 479 B. Mildness .................................................................................................... 480
VI. Concluding Remarks ............................................................................................. 481 Acknowledgment ............................................................................................................ 481 References ....................................................................................................................... 481
Environmental awareness has led to the development of the environmentally benign “green surfactants” that show high biodegradability and low aquatic toxicity [1]. Also, there is a growing trend toward surfactants for personal care products that are milder and less irritant than conventional surfactants, because such mild surfactants can help to reduce the visible signs of aging and leave the skin feeling moisturized [2-4]. Accordingly, “green and mild” are the important property for personal care products such as shampoos and body washes. In addition, important characteristics of a shampoo detergent are foaming ability, appropriate detergency, and calcium stability [3, 4]. The foaming capacity of the shampoo detergent does not directly determine the performance, but can affect the consumers’ purchasing decisions [4]. Also, when one applies anionic surfactant in shampoo detergent, precipitation of the calcium salts in hard water decreases the detergency and the foaming ability [5,7].
