Solubility and acid-base properties and activity coefficients of chitosan in different ionic media and at different ionic strengths, at T=25°C

Electrochemical one-step synthesis of hybrid nanocomposites Au/polymer

“…The chitosan addition effect is in good agreement with the data [18][19][20]. It follow from [18,19] chitosan and AuCl 4 -are formed a complex.…”

“…It follow from [18,19] chitosan and AuCl 4 -are formed a complex. Authors [20] found that the UV initiated synthesis of gold nanoparticles in the chitosan presence, which simultaneously performs stabilizing and restoring functions, results in the formation of larger gold nanoparticles.…”

Chitosan‐based nanofibers as bioactive meat packaging materials

“…Some authors have quantified this threshold by calculating a charge parameter λ, a protonation constant log K , or the degree of protonation α. These parameters are proportional to the charge density and strongly dependent on pH, degree of deacetylation, type of acid, and ionic strength …”

Solubility and modeling acid–base properties of adrenaline in NaCl aqueous solutions at different ionic strengths and temperatures

“…207 The least squares computer program LIANA that refines the 208 parameters of a generic y = f(x) linear or non-program (De Stefano et al, 1997) is useful for the 222 calculation of the formation percentages of the species present in 223 solution at the equilibrium; the program allows by means of the 224 stability constants and of the analytical concentration of the com-225ponents, to draw the speciation diagrams in different conditions. previous works we already described the theoretical 233 aspect of the total and intrinsic solubility of different classes of 234 organic ligands(Battaglia et al, 2008;Bretti et al, 2008aBretti et al, , 2013 Bretti et al, , 235 2012aBretti et al, ,c, 2005Bretti et al, , 2006aCataldo et al, 2009;…”

“…mol L À1 ) and in the absence of self-interactions; this 259 model can be also applied for the molar concentration scale.260 Long and McDevit observed that for apolar organic compounds, 261 the solubility tends to vary linearly with respect to the salt concen-262 tration, whilst in many cases, for acid-base non-electrolytes, this 263 variation is not linear(Battaglia et al, 2008;Bretti et al, 2008a Bretti et al, , 264 2012aBretti et al, ,c, 2005Bretti et al, , 2006aCataldo et al, 2009; Cigala et al, 2012, 265 2010;Crea et al, 2012) and a significant deviation from the ideal 266 behavior was obtained. In these cases, a modified version of the267 Long and McDevit equation was applied, where the Setschenow 268 parameter is in turn dependent on the salt concentration (c,m) NaCl ,: 269 k ðc;mÞ ¼ k ðc;mÞ1 þ k ðc;mÞ0 À k ðc;mÞ1 ðc; mÞ NaCl þ reported in other sections, the solubility of adre-296 naline was investigated at two temperatures, T = 298.15 K and 297 T = 310.15 K, in NaCl aqueous solutions and at different ionic 298 strengths (T = 298.15 K 0 < I/mol L À1 < 3.0 and T = 310.and intrinsic or neutral species solubility in the stud-301 ied experimental conditions are reported in Table 1, together with 302 the pH of the saturated solutions.…”