scholarly journals INVESTIGATION OF THE EFFECT OF SURFACTANTS OF VARIOUS NATURE ON THE RESUSPENDABILITY AND SEDIMENTATION STABILITY OF MENTHOL SUSPENSION

2021 ◽  
pp. 131-137
Author(s):  
Ксения Михайловна Ковальчук ◽  
Виолетта Андреевна Веролайнен ◽  
Светлана Анатольевна Темникова
Keyword(s):  
Sodium Dodecyl Sulfate ◽  
Sodium Dodecyl ◽  
Tween 80 ◽  
Sorbitan Monooleate ◽  
Sedimentation Stability ◽  
Industrial Grade ◽  
Dodecyl Sulfate ◽  
Span 80

Исследовано влияние поверхностно-активных веществ (ПАВ) различной природы: твина-80, сорбитана моноолеата SPAN-80, додецилсульфата натрия, и синтанола промышленного производства ДС-10 на ресуспендируемость и седиментационную устойчивость водной суспензии ментола. The effect of surfactants of various natures (tween-80, sorbitan monooleate SPAN-80, sodium dodecyl sulfate, and industrial-grade synthanol DS-10) on the resuspendability and sedimentation stability of an aqueous menthol suspension was studied.

Pretreatment Effect on the Stability of Coal Hexane Coal-Water Suspension

2014 ◽  
Vol 587-589 ◽  
pp. 912-915
Author(s):  
Neila E. Bekturganova ◽  
Moldir Z. Kerimkulova ◽  
Kuanyshbek Musabekov ◽  
Laura Baibulova ◽  
Manara Orynbasarova ◽  
...  
Keyword(s):  
Sodium Dodecyl Sulfate ◽  
Sodium Dodecyl ◽  
Sedimentation Stability ◽  
Water Suspension ◽  
Stable Dispersion ◽  
Dispersion System ◽  
Pretreatment Effect ◽  
Dodecyl Sulfate ◽  
Presence And Absence ◽  
The Stability

Stability of coal-water suspension (WCS) is one of the main criteria for obtaining fuel efficient. In the present work we investigated the sedimentation stability of coal-water suspension of 35% (in the presence and absence of hexane) stabilized by sodium dodecyl sulfate. Found that pretreatment of coal hexane (before being crushed) and further stabilization of coal-water suspension of 35% sodium dodecyl sulfate at concentrations of 0.8-.1.0% helps to ensure a stable dispersion system.

scholarly journals Virus Passage through Track-Etch Membranes Modified by Salinity and a Nonionic Surfactant

1999 ◽  
Vol 65 (6) ◽  
pp. 2773-2775 ◽  
Author(s):  
C. David Lytle ◽  
Licia B. Routson ◽  
Nisha B. Jain ◽  
Matthew R. Myers ◽  
Barbara L. Green
Keyword(s):  
Sodium Dodecyl Sulfate ◽  
Nonionic Surfactant ◽  
Sodium Dodecyl ◽  
Tween 80 ◽  
Electrostatic Repulsion ◽  
Virus Adsorption ◽  
Dodecyl Sulfate ◽  
Polycarbonate Membranes ◽  
Pass Through ◽  
Track Etch

ABSTRACT Why do viruses sometimes not pass through larger pores in track-etch filters? Increasing the salinity (0.8 to 160 mM Na+) decreased φX174 and PRD1 passage through track-etch polycarbonate membranes (sodium dodecyl sulfate coated but not polyvinylpyrrolidone coated) and PRD1 passage through polyester membranes. Undiminished passage when 0.1% Tween 80 was added implied that nonionic virus adsorption occurred and indicated that high levels of salinity decreased virus passage by decreasing electrostatic repulsion that prevented adsorption.

Solubilization of Span 80 Niosomes by Sodium Dodecyl Sulfate

2016 ◽  
Vol 4 (3) ◽  
pp. 1862-1869 ◽  
Author(s):  
Laura Alonso ◽  
Lara Roque ◽  
Isabel Escudero ◽  
José M. Benito ◽  
M. Teresa Sanz ◽  
...  
Keyword(s):  
Sodium Dodecyl Sulfate ◽  
Sodium Dodecyl ◽  
Dodecyl Sulfate ◽  
Span 80

Interaction of moxifloxacin hydrochloride with sodium dodecyl sulfate and tween 80: Conductivity & phase separation methods

2020 ◽  
Vol 301 ◽  
pp. 112467 ◽  
Author(s):  
Sk.Md. Ali Ahsan ◽  
Nora Hamad Al-Shaalan ◽  
Md. Ruhul Amin ◽  
Mohammad Robel Molla ◽  
Shahina Aktar ◽  
...  
Keyword(s):  
Phase Separation ◽  
Sodium Dodecyl Sulfate ◽  
Sodium Dodecyl ◽  
Tween 80 ◽  
Dodecyl Sulfate

Micellar-enhanced ultrafiltration of copper ions using sodium dodecyl sulfate and its mixture with Brij 35, Tween 80 and Triton X-100

2013 ◽  
Vol 67 (10) ◽  
pp. 2154-2159 ◽  
Author(s):  
Baowei Zhao ◽  
Ruirui Li ◽  
Jinkui Zhong ◽  
Li Zhang
Keyword(s):  
Sodium Dodecyl Sulfate ◽  
Nonionic Surfactant ◽  
Sodium Dodecyl ◽  
Tween 80 ◽  
Molar Ratio ◽  
Permeate Flux ◽  
Brij 35 ◽  
Dodecyl Sulfate ◽  
Micellar Enhanced Ultrafiltration ◽  
Triton X

The performance of copper ion removal using sodium dodecyl sulfate (SDS) and its mixtures with Brij 35, Tween 80 (TW80) and Triton X-100 (TX100) by micellar-enhanced ultrafiltration (MEUF) was investigated. The effects of the molar ratio of nonionic surfactant to SDS on the critical micelle concentration (CMC) of SDS/Brij 35, SDS/TW80 and SDS/TX100, the removal efficiency of Cu2+, the residual concentration of SDS in the permeate solution and the permeate flux were tested. The results showed that the CMCs of the mixed surfactants were sharply less than that of pure SDS. The removal efficiencies of Cu2+ were up to the maximum values 98.3 and 95.8% when the molar ratios of Brij 35 and TW80 to SDS were 0.3, and it was 93.5% given 0.7 molar ratio of TX100 to SDS. The concentration of SDS in the permeate decreased dramatically with the addition of nonionic surfactant, and the permeate flux decreased slightly as the molar ratio increased. Compared with the performance by single SDS, the mixed SDS/Brij 35, SDS/TW80 and SDS/TX100 at an optimum composition could result in not only higher rejection of Cu2+ but also much less dosage of surfactant and concentration of SDS in the permeate.

Quantitative Analysis of Dye Decolourization Reactions in Mixed Micellar Systems of Sodium Dodecyl Sulfate with Tween-20, Tween-80, and Triton X-100

2012 ◽  
Vol 65 (2) ◽  
pp. 153 ◽  
Author(s):  
Kimkholhing Lunkim ◽  
M. Niraj Luwang ◽  
Sri K. Srivastava
Keyword(s):  
Quantitative Analysis ◽  
Sodium Dodecyl Sulfate ◽  
Sodium Dodecyl ◽  
Tween 80 ◽  
Inhibitory Effect ◽  
Reaction Rate Constant ◽  
Tween 20 ◽  
Sds Micelles ◽  
Hydroxyl Ion ◽  
Dodecyl Sulfate

The reaction of triphenylmethane dye (ethyl violet) with hydroxyl ion has been investigated in absence and presence of micelles. In micellar solutions, the solubilization of dye carbocation is observed. The reaction rate constant follows pseudo-first order kinetics with respect to the nucleophile. In presence of sodium dodecyl sulfate (SDS) micelles, an inhibitory effect is observed due to repulsion of the nucleophile to the strongly bound dye carbocation in the negatively charged SDS aggregate. The presence of nonionic surfactant reduces the inhibitory effect of the anionic SDS micelles. Quantitative analysis of the micellar data obtained has been done by applying a positive cooperativity model of enzyme catalysis. The value of n (index of cooperativity) has been found to be greater than 1 for all systems under study. The presence of solvents such as ethanol, n-propanol, and n-butanol reduces the inhibitory effect of the micelles.

scholarly journals Conductometric study of sodium dodecyl sulfate - nonionic surfactant (Triton X-100, Tween 20, Tween 60, Tween 80 or Tween 85) mixed micelles in aqueous solution

2012 ◽  
Vol 66 (1) ◽  
pp. 21-28 ◽  
Author(s):  
Dejan Cirin ◽  
Mihalj Posa ◽  
Veljko Krstonosic ◽  
Maja Milanovic
Keyword(s):  
Sodium Dodecyl Sulfate ◽  
Synergistic Effect ◽  
Nonionic Surfactants ◽  
Mixed Micelles ◽  
Sodium Dodecyl ◽  
Tween 80 ◽  
Tween 20 ◽  
Dodecyl Sulfate ◽  
Tween 60 ◽  
Triton X

The present study is concerned with the determination of the critical micelle concentration (cmc) of mixed micelles of sodium dodecyl sulfate with one of five nonionic surfactants (Triton X-100, Tween 20, Tween 60, Tween 80 or Tween 85) from conductance measurements. Based on the calculated values of the ? parameters we have noticed that SDS-nonionic surfactants mostly showed strong synergistic effect. It was found that nonionic surfactants with mainly longer and more hydrophobic tail show stronger interactions with hydrophobic part of SDS, thus expressing stronger synergism. In SDS-Tween 80 binary system the strongest synergistic effect was noticed. SDS-Tween 85 micellar system showed antagonistic effect, most probably because the presence of the double bond in its three hydrophobic tails (three C18 tails) makes it sterically rigid.

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