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doi: 10.1021/ed078p347
A simple and suitable method for the determination of critical micelle concentration of surfactants is described. The experiment was adapted from a traditional method and aims to familiarize undergraduate students with micellar solutions of amphiphilic molecules, versatile compounds exhibiting a wide range of applications. Surface tension is determined from the maximum bubble pressure required to form a bubble in a capillary tube just touching the liquid. The capillary is calibrated using liquids of known surface tension (at least 10 standard substances). Sodium dodecyl sulfate was selected to check the accuracy of the equipment.
citations This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | 36 | |
popularity This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network. | Top 10% | |
influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | Top 10% | |
impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network. | Average |