Effect of the Nature of the Counterion on the Properties of Anionic Surfactants. 2. Aggregation Number-Based Micelle Ionization Degrees for Micelles of Tetraalkylammonium Dodecylsulfates

2004 ◽  
Vol 108 (39) ◽  
pp. 14948-14955 ◽  
Author(s):  
Barney L. Bales ◽  
Kaba Tiguida ◽  
Raoul Zana
Keyword(s):  
Anionic Surfactants ◽  
Aggregation Number

Phase behavior of cationic and anionic surfactants at low concentrations

1992 ◽  
Vol 50 (1) ◽  
pp. 694-695
Author(s):  
E. Naranjo
Keyword(s):  
Phase Behavior ◽  
Structural Characterization ◽  
Dynamic Systems ◽  
Anionic Surfactants ◽  
Intermolecular Forces ◽  
Stable Form ◽  
Surfactant Mixtures ◽  
Low Concentrations ◽  
Cationic And Anionic Surfactants ◽  
General Method

Equilibrium vesicles, those which are the stable form of aggregation and form spontaneously on mixing surfactant with water, have never been demonstrated in single component bilayers and only rarely in lipid or surfactant mixtures. Designing a simple and general method for producing spontaneous and stable vesicles depends on a better understanding of the thermodynamics of aggregation, the interplay of intermolecular forces in surfactants, and an efficient way of doing structural characterization in dynamic systems.

Effect of the number of arms on the mechanical properties of a star-shaped cyclic olefin copolymer

2019 ◽  
Vol 10 (41) ◽  
pp. 5578-5583 ◽  
Author(s):  
Takumitsu Kida ◽  
Ryo Tanaka ◽  
Koh-hei Nitta ◽  
Takeshi Shiono
Keyword(s):  
Mechanical Properties ◽  
Thermal Properties ◽  
Physical Properties ◽  
Secondary Amine ◽  
Aggregation Number ◽  
Drastic Change ◽  
Cyclic Olefin Copolymer ◽  
Cyclic Olefin

The increase of aggregation number in a star-shaped cyclic olefin copolymer was succeeded by using a triazine-based secondary amine, which caused a drastic change in physical properties without changing the thermal properties.

Synthesis of octahedral Cu2O microcrystals assisted with mixed cationic/anionic surfactants

2007 ◽  
Vol 61 (11-12) ◽  
pp. 2281-2283 ◽  
Author(s):  
Shengyu Jing ◽  
Shuangxi Xing ◽  
Yan Wu ◽  
Yanfei Wang ◽  
Bing Zhao ◽  
...  
Keyword(s):  
Anionic Surfactants

Synthesis of Thumba, Castor and Sal Fatty Ethanolamide-Based Anionic Surfactants

2013 ◽  
Vol 17 (4) ◽  
pp. 637-645 ◽  
Author(s):  
Kotte Kamalakar ◽  
Tenneti Satyavani ◽  
Yarra Mohini ◽  
Rachapudi B. N. Prasad ◽  
Mallampalli S. L. Karuna
Keyword(s):  
Anionic Surfactants

Influences of alkanes on the phase behaviors of system of cationic–anionic surfactants

2021 ◽  
pp. 1-7
Author(s):  
Hongni Teng ◽  
Na Wang ◽  
Yao Zhang ◽  
Jingjing Wang ◽  
Yong Chen
Keyword(s):  
Anionic Surfactants ◽  
Phase Behaviors

scholarly journals Potentiometric Surfactant Sensor Based on 1,3-Dihexadecyl-1H-benzo[d]imidazol-3-ium for Anionic Surfactants in Detergents and Household Care Products

Molecules ◽  
2021 ◽  
Vol 26 (12) ◽  
pp. 3627
Author(s):  
Nikola Sakač ◽  
Dubravka Madunić-Čačić ◽  
Dean Marković ◽  
Lucija Hok ◽  
Robert Vianello ◽  
...  
Keyword(s):  
Anionic Surfactants ◽  
Negative Impact ◽  
Ion Pair ◽  
Two Phase ◽  
Potentiometric Response ◽  
Titration Curves ◽  
Signal Change ◽  
Nernstian Slope ◽  
Good Agreement

A 1,3-dihexadecyl-1H-benzo[d]imidazol-3-ium-tetraphenylborate (DHBI-TPB) ion-pair implemented in DHBI-TPB surfactant sensor was used for the potentiometric quantification of anionic surfactants in detergents and commercial household care products. The DHBI-TPB ion-pair was characterized by FTIR spectroscopy and computational analysis which revealed a crucial contribution of the C–H∙∙∙π contacts for the optimal complex formation. The DHBI-TPB sensor potentiometric response showed excellent analytical properties and Nernstian slope for SDS (60.1 mV/decade) with LOD 3.2 × 10−7 M; and DBS (58.4 mV/decade) with LOD 6.1 × 10−7 M was obtained. The sensor possesses exceptional resistance to different organic and inorganic interferences in broad pH (2–10) range. DMIC used as a titrant demonstrated superior analytical performances for potentiometric titrations of SDS, compared to other tested cationic surfactants (DMIC > CTAB > CPC > Hyamine 1622). The combination of DHBI-TPB sensor and DMIC was successfully employed to perform titrations of the highly soluble alkane sulfonate homologues. Nonionic surfactants (increased concentration and number of EO groups) had a negative impact on anionic surfactant titration curves and a signal change. The DHBI-TPB sensor was effectively employed for the determination of technical grade anionic surfactants presenting the recoveries from 99.5 to 101.3%. The sensor was applied on twelve powered samples as well as liquid-gel and handwashing home care detergents containing anionic surfactants. The obtained results showed good agreement compared to the outcomes measured by ISE surfactant sensor and a two-phase titration method. The developed DHBI-TPB surfactant sensor could be used for quality control in industry and has great potential in environmental monitoring.

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