| 초록 |
Two series of anionic surfactants (endo-5-O-alkyl isosorbide-2-O-propyl sulfonic acid sodium salt(ENISS-n) and exo-2-O-alkyl isosorbide-5-O-propyl sulfonic acid sodium salt(EXISS-n)) with straight alkyl chains (hexyl, octyl, decyl, and dodecyl) were synthesized from isosorbide derived from biomass, through steps of allylation, alkylation, and sulfonation. ENISS-n also displayed better stability than EXISS-n in both the emulsion separation experiment and the measured TSI data. The synthesized anionic surfactants were characterized using the critical micelle concentration (CMC), surface activity, emulsion stability, foaming height, and the Turbiscan Stability Index. The properties of endo form and exo form were compared. |
