Characterization and drug-permeation profiles of microporous and dense cellulose acetate membranes: influence of plasticizer and pore forming agent

2004 ◽  
Vol 278 (1) ◽  
pp. 99-110 ◽  
Author(s):  
Marcia M. Meier ◽  
Luiz A. Kanis ◽  
Valdir Soldi
Keyword(s):  
Cellulose Acetate ◽  
Drug Permeation ◽  
Cellulose Acetate Membranes

Effect of the structure of cellulose acetate membranes on their permeability, electrical conductivity and rejection

1990 ◽  
Vol 55 (12) ◽  
pp. 2933-2939 ◽  
Author(s):  
Hans-Hartmut Schwarz ◽  
Vlastimil Kůdela ◽  
Klaus Richau
Keyword(s):  
Electrical Conductivity ◽  
Electrical Properties ◽  
Cellulose Acetate ◽  
Reverse Osmosis ◽  
Water Flux ◽  
Cellulose Acetate Membrane ◽  
Structure Parameters ◽  
Dc Electrical Conductivity ◽  
Cellulose Acetate Membranes

Ultrafiltration cellulose acetate membrane can be transformed by annealing into reverse osmosis membranes (RO type). Annealing brings about changes in structural properties of the membranes, accompanied by changes in their permeability behaviour and electrical properties. Correlations between structure parameters and electrochemical properties are shown for the temperature range 20-90 °C. Relations have been derived which explain the role played by the dc electrical conductivity in the characterization of rejection ability of the membranes in the reverse osmosis, i.e. rRO = (1 + exp (A-B))-1, where exp A and exp B are statistically significant correlation functions of electrical conductivity and salt permeation, or of electrical conductivity and water flux through the membrane, respectively.

Transport properties of Toray's asymmetric cellulose acetate membranes

Desalination ◽  
1985 ◽  
Vol 56 ◽  
pp. 251-260 ◽  
Author(s):  
M. Kurihara ◽  
W. Pusch ◽  
T. Tanaka
Keyword(s):  
Transport Properties ◽  
Cellulose Acetate ◽  
Cellulose Acetate Membranes

Quantitative alkaline phosphatase isoenzyme determination by electrophoresis on cellulose acetate membranes.

1977 ◽  
Vol 23 (1) ◽  
pp. 28-34 ◽  
Author(s):  
W H Siede ◽  
U B Seiffert
Keyword(s):  
Alkaline Phosphatase ◽  
Cellulose Acetate ◽  
Clinical Laboratory ◽  
Kinetic Assay ◽  
Specific Staining ◽  
Cellulose Acetate Membranes ◽  
Alkaline Phosphatase Isoenzymes ◽  
Elution Method ◽  
Routine Clinical Laboratory ◽  
Alkaline Phosphatase Isoenzyme

Abstract We present a new method for quantitative determination of alkaline phosphatase isoenzymes. This method consists of electrophoretic separation on cellulose acetate membranes, special fixation technique to avoid elution and diffusion of enzyme protein during incubation, specific staining, and quantitative evaluation by densitometric measurement. We highly recommend the precedure for routine clinical laboratory use. In all normal individuals we observe two isoenzymes of hepatic origin and one isoenzyme each of osseous, intestinal, and biliary origin. Quantitative normal values are presented. Precision of the method is calculated, the CV being less than 10%. The exactness of densitometric quantification is proved by comparison with kinetic assay of alkaline phosphatase isoenzymes by use of an elution method. Clinical implications of alkaline phosphatase isoenzymograms are reported and discussed in detail.

Annealing effect in porous cellulose acetate membranes

1987 ◽  
Vol 34 (2) ◽  
pp. 283-296 ◽  
Author(s):  
H.H. Schwarz ◽  
K. Richau ◽  
H.G. Hicke
Keyword(s):  
Cellulose Acetate ◽  
Annealing Effect ◽  
Cellulose Acetate Membranes

scholarly journals Permeation of sodium dodecyl sulfate through polyaniline-modified cellulose acetate membranes

Polymer ◽  
2005 ◽  
Vol 46 (16) ◽  
pp. 5918-5928 ◽  
Author(s):  
A.J.M. Valente ◽  
H.D. Burrows ◽  
A.Ya. Polishchuk ◽  
C.P. Domingues ◽  
O.M.F. Borges ◽  
...  
Keyword(s):  
Sodium Dodecyl Sulfate ◽  
Cellulose Acetate ◽  
Sodium Dodecyl ◽  
Cellulose Acetate Membranes ◽  
Dodecyl Sulfate ◽  
Modified Cellulose

Permeability of phenol through cellulose acetate membranes by reverse osmosis in various alcoholic systems

1979 ◽  
Vol 24 (5) ◽  
pp. 1191-1203 ◽  
Author(s):  
Hiroshi Nomura ◽  
Manabu Senō ◽  
Hiroshi Takahashi ◽  
Takeo Yamabe
Keyword(s):  
Cellulose Acetate ◽  
Reverse Osmosis ◽  
Cellulose Acetate Membranes
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