Synthesis, characterization, surface and antimicrobial activityof some nonionic di-Schiff base surface-active agents | ||||
| Journal of Basic and Environmental Sciences | ||||
| Volume 6, Issue 2, April 2019, Page 131-138 PDF (390.64 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jbes.2019.370604 | ||||
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| Authors | ||||
| Iman A. Gad El-Karim1; Nabel A. Negm2; Samir H. Shafek2; Khaled A. M. Abd El-aal* 1 | ||||
| 1Chemistry Department, Benha University, Benha, EGYPT. | ||||
| 2Petrochemicals department, Egyptian Petroleum Research Institute, Nasr City, Cairo, EGYPT. | ||||
| Abstract | ||||
| A series of nonionic Schiff base surfactants were prepared by the reaction between polyethylene glycol, glyoxalic acid and phenylene diamine. The prepared compounds were characterized using elemental analysis, FTIR and 1H-NMR spectroscopy. The surface activities of the prepared nonionic surfactants were determined using surface and interfacial tension measurements. The thermodynamic properties of these surfactants in adsorption and micellization were calculated at 25oC. The results showed that the increase in the polyethylene glycol chain length (nonionic chains) increases their adsorption tendencies at the interface. | ||||
| Keywords | ||||
| Schiff base; nonionic surfactants; surface activity; adsorption; micellization | ||||
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