The electron microscope is one of the research chemist's most valuable aids to discovery. This one at the DuPont Company's Experimental Station is capable of 100,000 diameter magnification. The image is projected, for direct visual examination, on fluorescent screen or, for photographing, on a plate of film.
Research directors of the DuPont Company guide the research work of the department. Here in a Rayon laboratory physicist Jack Ballou (in shirtsleeves) explains to them, the use of unique 'iron lung' in basic studies on fabric comfort. His audience with department affiliations are, left to right: Lawton Burrows (explosives), Max Goebel (Grasselli), George Graves (F. and F.), John Beekley (Polychemicals); Winfield Heckert (rayon); Thomas Chilton (engineering); Frank Signaigo (Photo Products); John Brill (Film); John Foulger (Service), Paul Austin (Electrochemicals), James Booge (Pigments); Merlin Brubaker (Chemical), and Harold Elley (Organic Chemicals).
Mrs. Ira Hume Carothers and Mr. Carothers of Des Moines, Iowa, parents of the late Dr. Wallace Hume Carothers, inventor of nylon, chat with B.M. May (center), general manger of the Rayon Department, E.I. DuPont Nemours & Company, at the dedication of the Carothers Research Laboratory on September 17, 1946. The laboratory is situated at the DuPont Experimental Station, near Wilmington, Delaware.
Heat resistance of the new H film is demonstrated in a laboratory at DuPont's Experimental Station. The film is made form polymers that DuPont scientists have been working on for many years. The company is also investigating their uses as plastics, industrial finishes and coatings. DuPont is building a plant at Circleville, Ohio to manufacture H film, which has a range of properties that make it interesting for aerospace applications and in the electrical field.
Scale model of the DuPont Company's Experimental Station as it will appear when the $30 million expansion program is completed. Construction of the new facilities will enable the company to increase its fundamental long range research activities as well as its facilities for the development of new chemical products. In the model, existing facilities of the Experimental Station are in the lower right hand corner. Structures shown in the other areas will be new. The pencil points to one of the 13 laboratory and semi works buildings to be erected in addition to administration, medical, library and other buildings and service installations.
At the Experimental Station, DuPont carries out fundamental research as a vital part of its scientific activities. This type of research is conducted to uncover new knowledge without regard to specific commercial objectives. Here in a fundamental research study a chemist uses a complex vacuum train of glass apparatus to purify gases for subsequent study in the gaseous phase.
The tensile strength of fabrics is tested on this modern version of a medieval torture tack. A swathe of fabric is secured in jaws of the machine which exerts a pulling pressure to tear it apart. Point at which it tears is recorded by dial at right.
The weight of fabrics, which is of importance to the manufacturer, wholesaler, retailers and consumer, is determined by precision balance. Sections of fabric measuring 4 in. x 4 in. are used to determine the weight per square yard.