Synthesis of Brominated C-18 Fatty Acids and Surfactant Properties of Their Sodium Salts

• Main Author: Baptist, Steven
• Format: Thesis
• Language: English; English
• Published: 1996
• Online Access: http://psasir.upm.edu.my/id/eprint/8607/1/FSAS_1996_5_A.pdf; http://psasir.upm.edu.my/id/eprint/8607/
• Institution: Universiti Putra Malaysia

The physicochemical properties of sodium salts fatty acid have not been thoroughly investigated and are, therefore, not well understood In line with this, brominated and non-brominated sodium salts of C-18 chain fatty acids were prepared and their physicochmical properties and performance in aqueous solution have been investigated by means of surface tension, conductivity, NMR(¹H and ¹³C) and emulsion stability The experimental results indicate that when bromine atom/s were present in the alkyl chain of the fatty acid sodium salts, the surface activity increases. It was also found that closely packed micelles were formed with the introduction of the bromine atom/s onto the hydrophobic region of the surfactant, thus a lower critical micelle concentration was registered. However, the presence of bromine did not affect the formation of stable w/o emulsions.