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A glass cell is described which fits on a standard microscope stage and which permits observation of a single filament of fiber-forming material as it is extruded and coagulated in a liquid medium. As examples of the morphological studies possible, photomicrographs are shown of fiber breakage (by high-speed motion pictures), light-scattering in dark field, and orientation by polarized light.
Mogensen, Allan O.
Chemical Engineer, American Cyanamid Co., Fibers Division, Stamford Laboratories, Stamford, Conn