scholarly journals Conformational Changes in Deoxyribonuclease I in Anionic and Cationic Surfactant Solutions.

1993 ◽  
Vol 16 (12) ◽  
pp. 1294-1296 ◽  
Author(s):  
Nobuo OKABE ◽  
Shigeki TAKASHIMA ◽  
Keisuke WATANABE
Keyword(s):  
Cationic Surfactant ◽  
Conformational Changes ◽  
Deoxyribonuclease I ◽  
Surfactant Solutions

Raman Spectroscopic Study of Ba2+-Surfactant Interactions in Aqueous Monodisperse Alkylpolyoxyethylene Surfactant Solutions

1993 ◽  
Vol 47 (11) ◽  
pp. 1784-1787
Author(s):  
Diana C. W. Siew ◽  
Ralph P. Cooney ◽  
Michael J. Taylor
Keyword(s):  
Conformational Changes ◽  
Influencing Factor ◽  
Difference Spectroscopy ◽  
Raman Spectroscopic ◽  
Chain Component ◽  
Raman Spectroscopic Study ◽  
Surfactant Solutions ◽  
Surfactant Complex ◽  
Surfactant Interactions ◽  
The Stability

Aqueous monodisperse alkylpolyoxyethylene surfactant-Ba2+ systems were investigated to clarify the coordination effects between the polyether chain and the cation which have been previously identified in polydisperse alkylphenoxy- and alkypolyoxyethylene surfactant systems. The coordination effects are simplified in the present study due to the presence of only a single polyether chain component. Formation of the surfactant complex resulted in conformational changes of the polyether chain which were monitored by Raman difference spectroscopy and curve fitting. The present studies confirm that surfactant-complex formation is dependent upon the polyether chain adopting the TGT-TĜT conformation and that the stability of the complex increases with the number of filled chain sites. The length of the polyether chain is also an influencing factor.

Effect of chitosan addition on phenanthrene solubilization in anionic or cationic surfactant solutions

2012 ◽  
Vol 37 (1-3) ◽  
pp. 253-258 ◽  
Author(s):  
Sudipta Chatterjee ◽  
Tania Chatterjee ◽  
Seung Han Woo
Keyword(s):  
Cationic Surfactant ◽  
Surfactant Solutions

Surfactant Effects on Picloram Adsorption by Soils

Weed Science ◽  
1976 ◽  
Vol 24 (6) ◽  
pp. 549-552 ◽  
Author(s):  
J. D. Gaynor ◽  
V. V. Volk
Keyword(s):  
Organic Matter ◽  
Cationic Surfactant ◽  
Anionic Surfactant ◽  
Organic Matter Content ◽  
Clay Content ◽  
Surfactant Solution ◽  
Matter Content ◽  
Adsorption Sites ◽  
Surfactant Solutions ◽  
Extractable Al

The effects of soil organic matter, clay, extractable Al, cation exchange capacity, and pH on the adsorption of picloram (4-amino-3,5,6-trichloropicolinic acid) from aqueous and surfactant solutions were investigated. Linear adsorption isotherms for the soils were obtained with the Freundlich equation. Of the five soil properties investigated, Freundlich K values correlated with extractable Al and clay content. Picloram adsorption from aqueous solutions and from the non-ionic and anionic surfactant solutions was greater on the soils at pH 5 than at pH 7. The anionic surfactant competed with picloram for adsorption sites on the soils at pH 5. Picloram adsorption from solutions containing 0.1 and 1% cationic surfactant was greater than that from aqeuous and anionic and nonionic surfactant solutions. Picloram adsorption from the 10% cationic surfactant solution was similar on soils with pH 5 and 7 and increased with decreased organic matter content.

scholarly journals Pipe Flow and Rheology of Cationic Surfactant Solutions.

1996 ◽  
Vol 22 (1) ◽  
pp. 221-225 ◽  
Author(s):  
Hiromoto Usui ◽  
Rieko Sakai ◽  
Takayasu Ito ◽  
Takashi Saeki
Keyword(s):  
Cationic Surfactant ◽  
Pipe Flow ◽  
Surfactant Solutions
Sign in / Sign up

Export Citation Format

Share Document