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Electrophoretic deposition of polymers. II. Polyimides: A coulombic study
Author(s) -
Alvino W. M.,
Fuller T. J.,
Scala L. C.
Publication year - 1983
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.1983.070280123
Subject(s) - faraday efficiency , polymer , yield (engineering) , deposition (geology) , materials science , electrolysis , faraday cage , electrokinetic phenomena , analytical chemistry (journal) , electrophoretic deposition , chemical engineering , polymer chemistry , chemistry , physics , nanotechnology , electrochemistry , composite material , organic chemistry , electrolyte , magnetic field , electrode , paleontology , quantum mechanics , sediment , engineering , biology , coating
Quantitative studies on the electrophoretic deposition of a polyimide polymer were carried out over the voltage range 25–100 V dc. Deposition yield was related to voltage, time, and coulombs and was found to obey Faraday's laws of electrolysis. Equations relating yield to voltage and coulombs were obtained from the plotted data. Results of coulombic studies indicate that the effective equivalent weight of the polymeric species being deposited is between 6800 and 7500 (i.e., amount deposited per faraday). The coulombic yield is 75 mg per coulomb. Information and speculation on the size and composition of the electroactive species are presented.