DETERMINATION OF HLB VALUES OF SOME COMMERCIAL NON-IONIC SURFACTANTS

In the last decades the researches on surfactants have become increasingly important. Non-ionic surfactants are used more and more areas as household chemicals or in the cosmetic industry. The raw materials of the surfactants are extremely varied. In the past 35 years, the market share of non-ionic...

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Bibliographic Details
Published inInternational Multidisciplinary Scientific GeoConference : SGEM Vol. 3; pp. 45 - 51
Main Authors Kothencz, Réka, Nagy, Roland, Bartha, László
Format Conference Proceeding
LanguageEnglish
Published Sofia Surveying Geology & Mining Ecology Management (SGEM) 01.01.2016
Subjects
Aqueous solutions
Colloid chemistry
Household chemicals
Hydrocarbons
Hydrodynamics
Hydrophobicity
Methods
Particle size
Pollutants
Raw materials
Solubility
Solutions
Surfactants
Turbidity
Values
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Summary:In the last decades the researches on surfactants have become increasingly important. Non-ionic surfactants are used more and more areas as household chemicals or in the cosmetic industry. The raw materials of the surfactants are extremely varied. In the past 35 years, the market share of non-ionic surfactants has increased to 40% of the total surfactant production. The non-ionic surfactants are compatible with different types of materials therefore they can be applied in various packages. The HLB (Hydrophile-Lipophile Balance) is an empirical expression for the relationship of the hydrophilic and hydrophobic groups of a surfactant. The higher the HLB value the more water-soluble the surfactant. The HLB values of environmentally friendly non-ionic surfactant family (Tween) were determined by an own-developed and improved method. The difference between the theoretical HLB value specified by the manufacturer and the experimentally determined HLB value were studied. The improved laboratory method was developed to determine the HLB value of the non-ionic surfactants for several applications. For the characterization, the solubility of various surfactants and the turbidity of their solutions were measured and the average hydrodynamic diameter of the aqueous solution of surfactants was also determined. The relationship between the HLB values and other colloidal properties of surfactants was investigated. It was found that there is a significant relationship between the chemical structure of surfactants and their colloid characteristics that can contribute to the efficient selection method of surfactants.
ISSN:1314-2704