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Preparation and characterization of thin parlodion membranes
Author(s) -
Lakshminarayanaiah N.
Publication year - 1965
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1965.070090409
Subject(s) - membrane , materials science , isothermal process , aqueous solution , composite material , diffusion , solvent , characterization (materials science) , capacitance , metal , polymer chemistry , chemical engineering , chemistry , electrode , nanotechnology , thermodynamics , metallurgy , engineering , biochemistry , physics , organic chemistry
Parlodion membranes 95 to 500 A. thick have been prepared on a glass surface by dipping a clean glass plate into the Parlodion solution and subsequently evaporating the solvent under controlled conditions by keeping the glass plate vertical in a metallic frame and covered with an inverted beaker. The membrane may be floated off on to an aqueous surface. Capacitance measurement established the thickness of the membrane. Electrical resistance and isothermal diffusion potentials arising across them when they separate different salt solutions have also been measured at room temperature.