Can optical fiber compete with profile analysis tensiometry in critical micelle concentration measurement?

Hajirasouliha, Farzaneh, Yang, Hua, Wu, Qiang and Zabiegaj, Dominika (2021) Can optical fiber compete with profile analysis tensiometry in critical micelle concentration measurement? Zeitschrift f�r Physikalische Chemie. ISSN 0942-9352 (In Press)

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Official URL: https://doi.org/10.1515/zpch-2021-0004

Abstract

Critical micelle concentration (CMC) is one of the important nominal characteristics of the surfactants which can be measured using various methods. In this study, to detect the CMC of two ionic surfactants, cetyltrimethylammonium bromide (CTAB) and sodium dodecyl sulfate (SDS), two methods were utilized: (a) optical fiber and (b) drop profile analysis tensiometry (PAT) techniques. The spectrum width center and surface tension of the solutions at different concentrations of the surfactant were measured. The preliminary outcomes showed a compliance between optical fiber method and PAT technique. However, there were differences in the behavior of two surfactants in optical fiber measurement. In this method, when the solid surface of fiber is put in the system, the interactions between surfactant molecules and the fiber surface must be carefully considered.

Item Type: Article
Uncontrolled Keywords: critical micelle concentration (CMC), optical fiber, profile analysistensiometry, surfactants
Subjects: F200 Materials Science
H300 Mechanical Engineering
Department: Faculties > Engineering and Environment > Mechanical and Construction Engineering
Depositing User: John Coen
Date Deposited: 29 Mar 2021 09:49
Last Modified: 29 Mar 2021 10:00
URI: http://nrl.northumbria.ac.uk/id/eprint/45810

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