Process for preparing a thin film

Details Process for preparing a thin film Process for preparing a thin film

1988-06-28

1989-03-21

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

264204, 264298, B29C 3914, B29C 4124, B29D 701

Patent

active

048141321

ABSTRACT:
A process for preparing a thin film having a large area. A casting solution of a film-forming material and a solvent is fed to the surface of a liquid substrate immiscible with the solution by utilizing interfacial tension. Spontaneous spreading of the casting solution occurs across the surface of the liquid substrate and evaporation of the solvent produces a thin film on the liquid surface which is continuously collected. The feed of the casting solution to the surface of the substrate is at least either a material which shows selective wettability for the casting solution in preference to the liquid substrate or a structure capable of developing capillarity.

REFERENCES:
patent: 2641022 (1953-06-01), Kress
patent: 2708617 (1955-05-01), Magat et al.
patent: 3767737 (1973-10-01), Lundstrom
patent: 3892665 (1975-07-01), Steigelmann et al.
patent: 3989466 (1976-11-01), Pan
patent: 4155793 (1979-05-01), Salemme et al.
patent: 4279855 (1981-07-01), Ward, III
patent: 4451374 (1984-05-01), Peterson et al.
Paul Hiemenz, "Principles of Colloid and Surface Chemistry", 1977, pp. 210-211, 223-224.
J. Philip Bromberg, "Physical Chemistry", 2nd ed., 1984, pp. 382.

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