ISSN:
0021-8995
Keywords:
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
Notes:
Polydivinylbenzene-4-vinyl-N-methylpyridinium iodide (MeVP+-DVBI-) membranes are obtained by solvent evaporation from dispersions of copolymer powder in polysulfone dichloroethane solutions. The membranes' macroporosity increases from 2.5 to 46.4% and the pore size distribution concentrates in the 103-105 Å range upon varying the concentration of polypyridinium polymer from 0 to 67% w/w. Similarly, the specific conductivity increases from 10-11 to 10-4 ohm-1 cm-1 and the mechanical strength decreases from 500 to 8.8 kg/cm2. The ion selectivity is maximum at 40-50% MeVP+-DVBI- and lower above or below this concentration range. The properties are discussed in relation to the membrane chemical and physical parameters.
Additional Material:
5 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/app.1987.070340603
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