Synergistic Action of Temperature and pH Factors in the Cleaning of Fatty Acids Soils; Analyzed by Probability Density Functional Method
| Autor: | Karen Miyamoto, Masaru Oya, Miyako Oya-Hasegawa |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
030309 nutrition & dietetics
General Chemical Engineering Kinetics Detergents Analytical chemistry Probability density function 03 medical and health sciences chemistry.chemical_compound Surface-Active Agents 0404 agricultural biotechnology Sodium dodecyl sulfate Laundering chemistry.chemical_classification 0303 health sciences Aqueous solution Fatty Acids Temperature Fatty acid Sodium Dodecyl Sulfate Water 04 agricultural and veterinary sciences General Medicine General Chemistry Hydrogen-Ion Concentration Mechanical force 040401 food science Solutions chemistry Soil water |
| Zdroj: | Journal of oleo science. 70(4) |
| ISSN: | 1347-3352 |
| Popis: | In this study, the interaction between the temperature and the pH of soil containing fatty acids with sodium dodecyl sulfate (SDS) aqueous solution was investigated to elucidate their synergistic effect in cleaning. A tergotometer was used for the cleaning test, and the cleaning results were analyzed by the probability density functional method, using the calculated parameter, µ rl , as an index of the cleaning power. The increase in µ rl by one of the factors was defined as ΔX or ΔY and the increase in µ rl by the both factors was defined as Δ(X + Y). It is assumed that there is a synergistic effect when Δ(X + Y) > ΔX + ΔY. The cleaning of fatty acid stains followed the addition rule pertaining to mechanical force and the pH effect. However, synergy was observed between the temperature and the pH effect. This was also supported by the plot of µ rl vs 1/T and observations using a phase-contrast microscope. |
| Databáze: | OpenAIRE |
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