Self-association of amphiphilic phenothiazine drugs in aqueous solutions of low ionic strength

1991 ◽  
Vol 87 (18) ◽  
pp. 2971 ◽  
Author(s):  
David Attwood ◽  
Victor Mosquera ◽  
Carlos Rey ◽  
Esperanza Vasquez
Keyword(s):  
Ionic Strength ◽  
Aqueous Solutions ◽  
Self Association ◽  
Low Ionic Strength ◽  
Phenothiazine Drugs

Size distribution analysis of colloid generated from compacted bentonite in low ionic strength aqueous solutions

2014 ◽  
Vol 95 ◽  
pp. 284-293 ◽  
Author(s):  
Nairoby Albarran ◽  
Claude Degueldre ◽  
Tiziana Missana ◽  
Ursula Alonso ◽  
Miguel García-Gutiérrez ◽  
...  
Keyword(s):  
Ionic Strength ◽  
Aqueous Solutions ◽  
Size Distribution ◽  
Distribution Analysis ◽  
Compacted Bentonite ◽  
Low Ionic Strength

Viscosimetric studies of chitosan nitrate and chitosan chlorhydrate in acid free NaCl aqueous solution

e-Polymers ◽  
2008 ◽  
Vol 8 (1) ◽  
Author(s):  
Cristóbal Lárez Velásquez ◽  
Joel Sánchez Albornoz ◽  
Enrique Millán Barrios
Keyword(s):  
Aqueous Solution ◽  
Ionic Strength ◽  
Aqueous Solutions ◽  
Aqueous Medium ◽  
Intrinsic Viscosity ◽  
Free Acid ◽  
Film Formation ◽  
Stiffness Parameter ◽  
Low Ionic Strength

AbstractTwo salts of the biopolymer chitosan were prepared in aqueous medium by employing an excess of HCl or HNO3 in order to ensure neutralization of all NH2-chitosan groups. Chitosan salts were extensively dialyzed in dionised water and dried at 40 ºC until film formation. The films were characterized by thermogravimetry, FTIR and conductimetric tritration. QH+Cl− and QH+NO3− salts were viscosimetrically evaluated in free acid aqueous solutions in the presence of NaCl to control ionic strength of the medium. Unexpected high intrinsic viscosity values were obtained at low ionic strength when QH+NO3− salt were evaluated. Smidsrod´s approach was employed to estimate the stiffness parameter of both salts and B = 0.084 and 0.120 for QH+Cl− and QH+NO3−, respectively, were obtained.

Polyelectrolyte Behavior of Polystyrene-block-poly(methacrylic acid) Micelles in Aqueous Solutions at Low Ionic Strength

2004 ◽  
Vol 37 (26) ◽  
pp. 10141-10154 ◽  
Author(s):  
Pavel Matějíček ◽  
Klára Podhájecká ◽  
Jana Humpolíčková ◽  
Filip Uhlík ◽  
Karel Jelínek ◽  
...  
Keyword(s):  
Ionic Strength ◽  
Aqueous Solutions ◽  
Methacrylic Acid ◽  
Low Ionic Strength
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