Synchrotron x-ray-scattering studies on the sodium dodecyl sulfate–water–pentanol–dodecaneL3sponge phase

1997 ◽  
Vol 56 (1) ◽  
pp. 608-613 ◽  
Author(s):  
Ning Lei ◽  
C. R. Safinya ◽  
D. Roux ◽  
K. S. Liang
2002 ◽  
Vol 248 (1) ◽  
pp. 149-157 ◽  
Author(s):  
Wilker Caetano ◽  
Emerson Luiz Gelamo ◽  
Marcel Tabak ◽  
Rosangela Itri

2013 ◽  
Vol 111 ◽  
pp. 561-570 ◽  
Author(s):  
José Wilson P. Carvalho ◽  
Fernanda Rosa Alves ◽  
Tatiana Batista ◽  
Francisco Adriano O. Carvalho ◽  
Patrícia S. Santiago ◽  
...  

2002 ◽  
Vol 16 (3-4) ◽  
pp. 343-350 ◽  
Author(s):  
O. López ◽  
M. Cócera ◽  
R. Pons ◽  
H. Amenitsch ◽  
J. Caelles ◽  
...  

The technique of time resolved small angle X–ray scattering (SAXS) using a synchrotron radiation source was used to study the structural transformations as well as the kinetic associated with the first steps of the solubilization of liposomes induced by the anionic surfactant sodium dodecyl sulfate (SDS). Neutral and electrically charged (anionic and cationic) liposomes were used to investigate the effect of the electrostatic charges on these initial steps. The mechanism that induces the solubilization process consisted in an adsorption of surfactant on the bilayers and a desorption of mixed micelles from the liposomes surface to the aqueous medium. Regardless of the type of charge of the liposome the time needed for the desorption of the first mixed micelles was shorter than that for the complete adsorption of the surfactant on the liposomes surface. The present work demonstrates that the adsorption of the SDS molecules on liposomes was slower when the charges of surfactant and lipids were the same. As for the release of mixed micelles from the surface of these liposomes, this process was slower when the charges of surfactant and lipids were opposite.


2020 ◽  
Vol 10 (14) ◽  
pp. 4745
Author(s):  
Xiaoyu Du ◽  
Chihiro Kishima ◽  
Haixin Zhang ◽  
Naoto Miyamoto ◽  
Naoki Kano

In this study, chitosan beads modified with sodium dodecyl sulfate (SDS) were successfully synthesized and employed for the removal of chromium(VI) (Cr(VI)). The adsorption performance of the adsorbent (SDS-chitosan beads) was examined by batch experiments. The partition coefficient (PC) as well as the adsorption capacity were evaluated to assess the true performance of the adsorbent in this work. The adsorbent (SDS-chitosan beads) showed a maximum Cr(VI) adsorption capacity of 3.23 mg·g−1 and PC of 9.5 mg·g−1·mM−1 for Cr(VI). The prepared adsorbent was characterized by different techniques such as scanning electron microscopy-energy dispersive X-ray spectroscopy (SEM-EDS), X-ray photoelectron spectroscopy (XPS) and Fourier transform-infrared spectroscopy (FT-IR). We used inductively coupled plasma mass spectrometry (ICP-MS) for the determination of Cr(VI) in solution. The experimental data could be well-fitted by pseudo-second-order kinetic and Langmuir isotherm models. The thermodynamic studies indicated that the adsorption process was favorable under the higher temperature condition. The SDS-modified chitosan beads synthesized in this work represent a promising adsorbent for removing Cr(VI).


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