The properties of a family of two-headed surfactant systems: the 4-alkyl-3-sulfosuccinates 2. Surface properties of alkyl sulfosuccinate micelles

1999 ◽  
Vol 77 (3) ◽  
pp. 340-347 ◽  
Author(s):  
Judith A MacInnis ◽  
Greg D Boucher ◽  
R Palepu ◽  
D Gerrard Marangoni
Keyword(s):  
Surface Properties ◽  
Surface Potential ◽  
Surface Charge Density ◽  
Potential Surface ◽  
Ultra Violet ◽  
Palisade Layer ◽  
Acid Base ◽  
Micellar Properties ◽  
Head Groups ◽  
Surface Potential Measurements

The micellar properties of a family of two-headed surfactants, the alkyl sulfosuccinates, were investigated employing fluorescence, ultra-violet spectroscopy, and acid-base titrations, as a function of the chain length of the surfactant. Polarity of the micellar interior was investigated using pyrene and the ionic probe 8-anilino-1-naphthalensulfonic acid ammonium salt (ANS). Pyrene I1/I3 ratios were used to probe the microenvironment of the probe in the palisade layer of the micelle. The pKa values of both of the anionic head groups were determined using acid-base titrations. Surface potential measurements were obtained from the measurement of the pKa of the hydrophobic indicator, 7-hydroxycoumarin, at the sulfosuccinate micellar interface. All of these results were used to examine the surface properties of the alkyl sulfosuccinate micelles and the polarity of the micellar interior.Key words: micellization, pKa, surface potential, surface charge density, 7-hydroxycoumarin, pyrene.

scholarly journals Surface properties of a single perfluoroalkyl group on water surfaces studied by surface potential measurements

2016 ◽  
Vol 483 ◽  
pp. 353-359 ◽  
Author(s):  
Takafumi Shimoaka ◽  
Yuki Tanaka ◽  
Nobutaka Shioya ◽  
Kohei Morita ◽  
Masashi Sonoyama ◽  
...  
Keyword(s):  
Surface Properties ◽  
Surface Potential ◽  
Surface Potential Measurements ◽  
Water Surfaces ◽  
Perfluoroalkyl Group

Surface charging parameters of charged particles in symmetrical electrolyte solutions

2020 ◽  
Vol 22 (35) ◽  
pp. 20123-20142
Author(s):  
Hadi Saboorian-Jooybari ◽  
Zhangxin Chen
Keyword(s):  
Charge Density ◽  
Surface Charge ◽  
Electrolyte Solution ◽  
Surface Charge Density ◽  
Potential Surface ◽  
Research Work ◽  
Charged Particles ◽  
Electrolyte Solutions ◽  
Surface Charging ◽  
Curvature Dependence

This research work is directed at development of accurate physics-based formulas for quantification of curvature-dependence of surface potential, surface charge density, and total surface charge for cylindrical and spherical charged particles immersed in a symmetrical electrolyte solution.

Formation of Metal Silicide Nanodots on Ultrathin SiO2 for Floating Gate Application

2009 ◽  
Vol 154 ◽  
pp. 95-100 ◽  
Author(s):  
Seiichi Miyazaki ◽  
Mitsuhisa Ikeda ◽  
Katsunori Makihara ◽  
K. Shimanoe ◽  
R. Matsumoto
Keyword(s):  
Surface Potential ◽  
Room Temperature ◽  
Areal Density ◽  
Film Deposition ◽  
Floating Gate ◽  
Metal Silicide ◽  
Kelvin Probe ◽  
Measuring Surface ◽  
Surface Potential Measurements ◽  
Mis Capacitors

We demonstrated a new fabrication method of Pt- and Ni-silicide nanodots with an areal density of the order of ~1011 cm-2 on SiO2 through the process steps of ultrathin metal film deposition on pre-grown Si-QDs and subsequent remote H2 plasma treatments at room temperature. Verification of electrical separation among silicide nanodots was made by measuring surface potential changes due to electron injection and extraction using an AFM/Kelvin probe technique. Photoemission measurements confirm a deeper potential well of silicide nanodots than Si-QDs and a resultant superior charge retention was also verified by surface potential measurements after charging to and discharging. Also, the advantage in many electron storage per silicide nanodot was demonstrated in C-V characteristics of MIS capacitors with silicide nanodots FGs.

Understanding Calcite Wettability Alteration through Surface Potential Measurements and Molecular Simulations

2017 ◽  
Vol 121 (50) ◽  
pp. 28017-28030 ◽  
Author(s):  
Sarah M. Walker ◽  
Maria C. Marcano ◽  
Sooyeon Kim ◽  
Sandra D. Taylor ◽  
Udo Becker
Keyword(s):  
Surface Potential ◽  
Molecular Simulations ◽  
Wettability Alteration ◽  
Surface Potential Measurements

Surface properties of Gemini surfactants with pyrrolidinium head groups

2012 ◽  
Vol 370 (1) ◽  
pp. 111-116 ◽  
Author(s):  
Bo Cai ◽  
Xuefeng Li ◽  
Yi Yang ◽  
Jinfeng Dong
Keyword(s):  
Surface Properties ◽  
Gemini Surfactants ◽  
Head Groups

The inversion of surface potential measurements to determine crack size and shape

1988 ◽  
Vol 64 (5) ◽  
pp. 2638-2647 ◽  
Author(s):  
M. P. Connolly ◽  
D. H. Michael ◽  
R. Collins
Keyword(s):  
Surface Potential ◽  
Crack Size ◽  
Size And Shape ◽  
Surface Potential Measurements
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