Interfacial properties rhamnolipids from an extract produced by a strain of Pseudomonas aeruginosa were analyzed in this study. The extract of rhamnolipid was characterized by surface tension
in different conditions; interfacial tension with different hydrocarbons; critical micelle concentration
under different pH and temperatures; particle size and emulsification capacity using laser
light profiling. It was observed that the rhamnolipids extract are sensitive to variations in pH,
thermostable and function as good emulsificant for emulsification of methyl methacrylate. The
emulsion stability order in function of the oil phase was methyl methacrylate > emulsions of castor
oil > emulsion n-heptane > emulsion toluene > emulsion hexadecane > octane emulsion. The
data presented show that rhamnolipid extracts may be used to formulate stable emulsions of methyl
methacrylate. This process can be used to do nano/microsphere of polymethyl methacrylate.
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