Preparation and characterization of hydrophobically modified alginate

✍ Scribed by Hyun-Ah Kang; Moon Sik Shin; Ji-Won Yang

• Publisher: Springer
• Year: 2002
• Tongue: English
• Weight: 430 KB
• Volume: 47
• Category: Article
• ISSN: 0170-0839
• DOI: 10.1007/s002890200005

✦ Synopsis

Biodegradable alginate-derived polymeric surfactants (APSs) with a linear alkyl group (C8, C12, C16) were synthesized by oxidation followed by reductive amination of 2,3-dialdehydic alginate. The oxidized alginates and all APSs were characterized by spectral and X-ray diffractometry analysis. The sonicated suspension test was employed to form self-aggregates in aqueous solution. In the case of 40% CHO-C8 APS, the lowest interfacial tension, 31.5 mNm -1 , was obtained at the c.m.c. value of 1.35 g L -1 . A biodegradability test on the 30% CHO-C12 APS system suggested that it would be attacked by a soil microorganism, Aspergillus niger.