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Fei L, Ge F, Yin Y, Wang C. Photo-responsive foam control base on nonionic azobenzene surfactant as stabilizer. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2018.10.038] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Nessim MI, Osman MM, Ismail DA. Surface-active properties of new cationic gemini surfactants with cyclic spacer. J DISPER SCI TECHNOL 2017. [DOI: 10.1080/01932691.2017.1381916] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Maher I. Nessim
- Department of Analysis and Evaluation, Egyptian Petroleum Research Institute, Cairo, Egypt
| | - Magda M. Osman
- Department of Analysis and Evaluation, Egyptian Petroleum Research Institute, Cairo, Egypt
| | - Dina A. Ismail
- Department of Analysis and Evaluation, Egyptian Petroleum Research Institute, Cairo, Egypt
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Ismail DA, Ahmed SM, Ahmed HM, Awad AI, El-Sharkawy HA. Synthesis and Biological Activity of Alkyl Pyridinium Aldoxime Based Surfactants. TENSIDE SURFACT DET 2016. [DOI: 10.3139/113.110438] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
AbstractA series of N-alkyl pyridinium aldoxime surfactants was synthesized by the reaction of pyridinium aldoxime with long chain alkyl halides (decyl, dodecyl, tetradecyl and hexadecyl bromide). The chemical structure of the synthesized compounds was confirmed by elemental analysis and FTIR spectra. Surface tension was measured in aqueous solutions for different concentrations at 25 °C. Various surface properties of the synthesized surfactants were evaluated, particularly the critical micelle concentration (CMC), effectiveness (πCMC), efficiency (PC20) as well as the maximum surface excess (Γmax) and minimum surface area (Amin). Also, the micellization and adsorption at liquid/air interfaces were investigated. The synthesized cationic surfactants were evaluated for their biocidal activity. Good antibacterial and antifungal activities were recorded against Gram-positive bacteria (Bacillus subtilis ATCC 6633, Micrococcus luteus ATCC 25922), followed by Gram-negative bacteria (Escherichia coli ATCC 23282, Pseudomonas aeruginosa ATCC 10145), yeast (Candida albicans IMRU 3669) and filamentous fungus (Aspergillus niger ATCC 16404).
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