Critical Assessment of the Surface Tension determined by the Maximum Pressure Bubble Method

Benedetto, Franco Emmanuel; Zolotucho, Hector; Prado, Miguel Oscar

doi:10.1590/1516-1439.232513

Cited by 8 publications

(2 citation statements)

References 6 publications

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“…Recently, some modifications ,,− have been made to this classic apparatus. A syringe pump has taken the place of the dropping funnel.…”

Section: Introductionmentioning

confidence: 99%

“…A digital micropressure transducer was employed to make the maximum pressure difference measurement easier. Unfortunately, there are still large measurement errors because of zero-point drift of the differential pressure sensor − and the hydrostatic pressure due to the immersion of a capillary, both of which can cause the maximum pressure difference measurement to be inaccurate. Furthermore, the bubble rate is also a factor affecting the maximum pressure difference .…”

Section: Introductionmentioning

confidence: 99%

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Optimized and Refined Apparatus for Measuring Surface Tension with the Bubble-Pressure Method

Bai

Li³

et al. 2021

J. Chem. Educ.

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A modified apparatus for measuring surface tension with the bubble-pressure method is proposed. Compared with a traditional instrument, this apparatus improved the accuracy of maximum pressure difference measurement and achieved the hydrostatic pressure correction. The apparatus was employed to determine the surface tension values of distilled water and ethanol, respectively, at different temperatures. Additionally, the cross-sectional area of the ethanol molecule was obtained from the surface tension of ethanol solutions with different concentrations and Gibbs adsorption. It was found that all measured values were in accordance with literature data. Thus, the improved device exhibited excellent accuracy and reliability. Furthermore, all of the instrumental components were assembled into one body, making it easy for undergraduate students to operate.

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“…Recently, some modifications ,,− have been made to this classic apparatus. A syringe pump has taken the place of the dropping funnel.…”

Section: Introductionmentioning

confidence: 99%