Surfactant properties of purified polyglycerol monolaurates

• DOI: 10.1007/s11743-003-0278-x
• Publication Date: 2006-11-15T09:21:31Z
• Authors: Tomoharu Kato; Takeshi Nakamura; Masatsugu Yamashita; Masami Kawaguchi; Tadaya Kato; Takahito Itoh
• Keywords: 04 agricultural and veterinary sciences; 0405 other agricultural sciences; 6. Clean water

Abstract A series of purified polyglycerol monolaurates (PGML), such as di‐, tri‐, tetra‐, and pentaglycerol monolaurates, were synthesized, their surfactant properties in aqueous solutions examined. The PGML compared with those n ‐dodecyl polyoxyethylene monoethers (C 12 EO ) to examine the function hydrophilic part these compounds. critical micelle concentration (CMC) values surface tension at CMC C increased linearly an increase number glycerol oxyethylene units, respectively; slope was greater for than . minimum area per molecule smaller that air/aqueous solution interface. initial foam heights surfactants or consistently higher more stable Detergency depended on a reduction interfacial tension. Triglycerol monolaurate showed lowest highest detergency among all tested. Overall, better performance tested It is noteworthy having few units (di‐ tetraglycerol monolaurates) are par many (hexa‐ octaoxyethylene). These results suggest secondary hydroxyl group every unit could be ; this characteristic feature guaranteed superior PGML.