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Electrophoretic deposition of polyetherimide from an aqueous emulsion: optimisation of some deposition parameters

✍ Scribed by Qariouh, Houssain; Raklaoui, Nabil; Schué, Rossitza; Schué, François; Bailly, Christian

Publisher
John Wiley and Sons
Year
1999
Tongue
English
Weight
324 KB
Volume
48
Category
Article
ISSN
0959-8103

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✦ Synopsis

A systematic study was carried out to investigate the cataphoretic electrodeposition of polyetherimide from an aqueous medium onto an electrically conductive support (aluminum, steel mesh). The subsequent re-imidisation steps were also investigated. The yield and quality of deposited polyetherimide were found to be strongly dependent upon a number of formulation variables that are closely related to the emulsion composition and electrodeposition conditions. A polymer modi®ed to 70% with methylpiperazine and quaternised to 50% with lactic acid gave a stable emulsion at 6% w/w (seven days at 4±5 °C). Maximum rate of deposition was obtained with an initial current density of 10 mA cm À2 in the voltage range of 40±68 V.

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