POLY ETHYLENE GLYCOL SYNTHESIS AND APPLICATION IN EMULSION

Abstract

Poly ethylene glycol (PEG4 )oleate nonionic surfactant was synthesizedusingageneral method by esterification of poly ethylene glycol ( PEG4) as hydrophilic portion with oleic acid as hydrophobic portionof the surfactant . IR was used to investigate esterification product which show peaks at 1739.69 cm-1 ,1137.92 cm-1due to (c=o) and (c-o) groups respectively .which confirm presence of ester function. The hydrophlilic ,libophilic balance (HLB) of the prepared surfactant was calculated using griffin method and found that the HLB for PEG4 mono and dioleate was 8.176 ,5.138 cm-1respectively .The surfactant functionality in emulsification was investigated using n-hexane as oil phase and . Dilution test showed that the type of emulsion was to be w\o type.