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Articles 2011 - 2013 of 2013

Full-Text Articles in Chemical Engineering

The Effect Of Concentration On The Viscosities Of Solutions Of Linear Flexible High Polymers, Lung Yu Chou, Jacques L. Zakin Jan 1967

The Effect Of Concentration On The Viscosities Of Solutions Of Linear Flexible High Polymers, Lung Yu Chou, Jacques L. Zakin

Chemical and Biochemical Engineering Faculty Research & Creative Works

Viscosity-concentration results in the moderately concentrated range for four samples of polyisobutylene (molecular weights of 1.3 x 104 to 1.0 x 106) in cyclohexane (concentrations up to 4.7 g./dl.) and in benzene (concentrations up to 7.0 g./dl.) at 24°C. (a theta solvent) showed molecular weight and goodness of solvent dependencies similar to those reported earlier for three other polymers. For polyisobutylene, polystyrene, and a copolymer of styrene and methyl methaerylate in good solvents, viscosity-concentration data plotted as ηsp. C[η] vs. k′[η]C fit a single curve. The linear region of this curve suggests that the Huggins equation is useful to C[η] …


The Construction And Use Of The Barrett Camera, Theresa Pauline Radermacher May 1947

The Construction And Use Of The Barrett Camera, Theresa Pauline Radermacher

Bachelors’ Theses

The study of the crystal structure of metals under various conditions of strain is at the present time the object of a great deal of scientific endeavor. A greater knowledge of the condition of strained crystals will be a tremendous aid in the future development of metallic construction for one can then predict the effect of any type of strain on a metal by the reaction of the individual crystals to that particular strain. It is the purpose of this paper to describe the construction and use of the Barrett camera which is used in experiments of this kind.


The Relative Influence Of Raw Material Components Upon The Thermal Expansion Of Vitreous Enamel., Robert C. Boyd Jan 1940

The Relative Influence Of Raw Material Components Upon The Thermal Expansion Of Vitreous Enamel., Robert C. Boyd

Electronic Theses and Dissertations

No abstract provided.