scholarly journals Effect of Temperature and Alcohol on the Determination of Critical Micelle Concentration of Non- Ionic Surfactants in Magnetic Water

2020 ◽  
Vol 17 (1(Suppl.)) ◽  
pp. 0255
Author(s):  
Aamer A. Al-Hatem
Keyword(s):  
Critical Micelle Concentration ◽  
Entropy Change ◽  
Effect Of Temperature ◽  
Ionic Surfactants ◽  
Slight Effect ◽  
Hydrophilic Interactions ◽  
Micellization Process ◽  
Free Energy Of Micellization ◽  
Magnetic Water

The determination of critical micelle concentration of selected non-ionic surfactants (Tween 20,40 and 80) have been investigated using magnetic water(MW)as an aqueous medium.Conductometry technique is used to determine critical micelle concentration.The effect of alcohol addition and temperature variation at the range(293.15 -303.15K) are also pursued. It is concluded that the process of micellization is spontaneous and endothermic because of the observed free energy of micellization (ΔGom) , enthalpy change of micellization  (ΔHom), and entropy change of micellization (ΔSom) for the system was also studied.The properties of the non-ionic surfactants were studied, both in absence and presence of alcohol. The results obtained were explained in light of hydrophobic-hydrophilic interactions and chain length of alcohol.The temperature change has slight effect on the micellization process. .

scholarly journals Fluorophotometric Determination of Critical Micelle Concentration (CMC) of Ionic and Non-Ionic Surfactants with Carbon Dots Based on the Stokes Shift

2015 ◽  
Vol 108 (2) ◽  
pp. 480a
Author(s):  
Mukesh L. Bhaisare ◽  
Sunil Pandey ◽  
M Shahnawaz Khan ◽  
Abou Talib ◽  
Hui-Fen Wu
Keyword(s):  
Critical Micelle Concentration ◽  
Carbon Dots ◽  
Stokes Shift ◽  
Ionic Surfactants

Fluorophotometric determination of critical micelle concentration (CMC) of ionic and non-ionic surfactants with carbon dots via Stokes shift

Talanta ◽  
2015 ◽  
Vol 132 ◽  
pp. 572-578 ◽  
Author(s):  
Mukesh Lavkush Bhaisare ◽  
Sunil Pandey ◽  
M. Shahnawaz Khan ◽  
Abou Talib ◽  
Hui-Fen Wu
Keyword(s):  
Critical Micelle Concentration ◽  
Carbon Dots ◽  
Stokes Shift ◽  
Ionic Surfactants

Determination of critical micelle concentration of non-ionic surfactants by electrocapillary curves

Talanta ◽  
1968 ◽  
Vol 15 (1) ◽  
pp. 133-136 ◽  
Author(s):  
Wahid U. Malik ◽  
Puran Chand ◽  
S.M. Saleem
Keyword(s):  
Critical Micelle Concentration ◽  
Ionic Surfactants

Cortical reaction as an egg quality indicator in artificial reproduction of pikeperch, Sander lucioperca

2012 ◽  
Vol 24 (6) ◽  
pp. 843 ◽  
Author(s):  
Daniel Żarski ◽  
Sławomir Krejszeff ◽  
Katarzyna Palińska ◽  
Katarzyna Targońska ◽  
Krzysztof Kupren ◽  
...  
Keyword(s):  
Quality Evaluation ◽  
Egg Quality ◽  
Effect Of Temperature ◽  
Artificial Reproduction ◽  
Female Fish ◽  
Sander Lucioperca ◽  
Embryo Survival ◽  
Hormonal Stimulation ◽  
Cortical Reaction

The aim of this study was to investigate the process of the cortical reaction in eggs of pikeperch, Sander lucioperca (L.), as well as the application of microscopic assessment of this process in egg quality evaluation. The analysis was carried out with eggs obtained from 10 females by artificial reproduction, in which hormonal stimulation with hCG was applied. Subsequently, each sample of eggs (separately from each female fish) was analysed. The analysis included observation of the cortical reaction and the process of egg swelling, and determination of the effect of temperature (12, 14 and 16°C) and the presence of spermatozoa on the cortical reaction. The results indicate that the cortical reaction in pikeperch eggs is quite violent, resulting in visible deformation of eggs between 3 and 5 min after activation. No effect of temperature or the presence of spermatozoa on the cortical reaction was observed. A strong correlation was recorded for the percentage of egg deformations observed and embryo survival rate. The described method of determination of pikeperch egg quality (based on egg deformation rate between 3 and 5 min after activation) may be highly useful, both in scientific research (where high-quality eggs are required) and in hatchery practice.

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