Thermodynamic Modeling of Apparent Molal Volumes of Metal Nitrate Salts with Pitzer Model

2015 ◽  
Vol 60 (3) ◽  
pp. 856-859 ◽  
Author(s):  
Mouad Arrad ◽  
Mohammed Kaddami ◽  
Hannu Sippola ◽  
Pekka Taskinen
Keyword(s):  
Thermodynamic Modeling ◽  
Pitzer Model ◽  
Metal Nitrate ◽  
Apparent Molal Volumes ◽  
Nitrate Salts ◽  
Molal Volumes

Apparent molal volumes of alkali metal nitrates at 30.deg.

1974 ◽  
Vol 19 (4) ◽  
pp. 326-328 ◽  
Author(s):  
Maria A. Berchiesi ◽  
Gianfrancesco Berchiesi ◽  
Giancarlo Gioia Lobbia
Keyword(s):  
Alkali Metal ◽  
Apparent Molal Volumes ◽  
Metal Nitrates ◽  
Molal Volumes

Effect of pressure on apparent molal volumes of nonionic surfactants in aqueous solutions

1980 ◽  
Vol 73 (1) ◽  
pp. 124-129 ◽  
Author(s):  
Shoji Kaneshina ◽  
Minoru Yoshimoto ◽  
Hideki Kobayashi ◽  
Nagamune Nishikido ◽  
Gohsuke Sugihara ◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Nonionic Surfactants ◽  
Effect Of Pressure ◽  
Apparent Molal Volumes ◽  
Molal Volumes

scholarly journals Effect of Ionic Radius in Metal Nitrate on Pore Generation of Cellulose Acetate in Polymer Nanocomposite

Polymers ◽  
2020 ◽  
Vol 12 (4) ◽  
pp. 981
Author(s):  
Woong Gi Lee ◽  
Younghyun Cho ◽  
Sang Wook Kang
Keyword(s):  
Cellulose Acetate ◽  
Ionic Radius ◽  
Water Pressure ◽  
Water Flux ◽  
Atomic Radius ◽  
Ionic Species ◽  
Metal Nitrate ◽  
Hydraulic Pressure ◽  
Physical Force ◽  
Nitrate Salts

To prepare a porous cellulose acetate (CA) for application as a battery separator, Cd(NO3)2·4H2O was utilized with water-pressure as an external physical force. When the CA was complexed with Cd(NO3)2·4H2O and exposed to external water-pressure, the water-flux through the CA was observed, indicating the generation of pores in the polymer. Furthermore, as the hydraulic pressure increased, the water-flux increased proportionally, indicating the possibility of control for the porosity and pore size. Surprisingly, the value above 250 LMH (L/m2h) observed at the ratio of 1:0.35 (mole ratio of CA: Cd(NO3)2·4H2O) was of higher flux than those of CA/other metal nitrate salts (Ni(NO3)2 and Mg(NO3)2) complexes. The higher value indicated that the larger and abundant pores were generated in the cellulose acetate at the same water-pressure. Thus, it could be thought that the Cd(NO3)2·4H2O salt played a role as a stronger plasticizer than the other metal nitrate salts such as Ni(NO3)2 and Mg(NO3)2. These results were attributable to the fact that the atomic radius and ionic radius of the Cd were largest among the three elements, resulting in the relatively larger Cd of the Cd(NO3)2 that could easily be dissociated into cations and NO3− ions. As a result, the free NO3− ions could be readily hydrated with water molecules, causing the plasticization effect on the chains of cellulose acetate. The coordinative interactions between the CA and Cd(NO3)2·4H2O were investigated by IR spectroscopy. The change of ionic species in Cd(NO3)2·4H2O was analyzed by Raman spectroscopy.

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