M.S.

A. The alcohol, 10-(4’-hydroxymethylphenyl)-1,2-benzanthracene, was prepared by the reduction or 10-(4’-carboxyphenyl)- 1,2- benzanthracene. The structure or the alcohol was proven by: (1) Ultraviolet spectra (2) Infrared spectra (3) Elementary analysis (4) Preparation or the benzoate B. The preparation of the Grignard reagent of 10-(4’-bromophenyl)-1,2-benzanthracene was unsuccessful. An explanation of this anomaly was not discovered. C. The Grignard reagent or 2-(1-naphthylmethyl)-chloro-benzene was prepared by the use or tetrahydrofuran and "entrainment" with methyl iodide. / M.S.

M.S.

Polymer films are often pre-treated to alter surface properties resulting in improved adhesion and wettability. The objective of the present work was to demonstrate the applicability of surface-sensitive techniques in the analysis of polymer films coated with thin overlayers. The surface or interphase region of sodium oleate coated polyethylene terephthalate (PET) films was studied by angle dependent x-ray photoelectron spectroscopy (XPS) and secondary ion mass spectrometry (SIMS). The effect of corona discharge pre-treatment on sodium oleate coating adhesion was of particular interest. The PET films were analyzed at five separate stages of production; between forward drawing of the PET and corona discharge pre-treatment, both prior to and after sodium oleate coating, after biaxially drawing of the coated film, and, as a final film, after annealing. A comparison was made between corona discharge pre-treated films and otherwise experimentally identical films, which has not been pre-treated. It was determined that corona discharge pre-treatment causes increased surface oxygen on the PET films. This effect disappears with time until XPS analysis shows no difference between treated and untreated films. However, PET films which had been forward drawn, corona discharge pre-treated, immediately coated with sodium oleate, biaxially drawn and then annealed, showed the enhanced surface oxygen after several months of storage. It has been proposed that the mechanism for this phenomenon includes the ionic interaction between the sodium of sodium oleate and the surface oxygen groups, as well as, the increased crystallinity of the PET brought about by the annealing process. Corona discharge processing of polymer films such as PET or polyethylene has been used previously as a means of enhancing adhesion minutes before an adhesion promoter was required. The process described above now allows long-term storage of films with enhanced adhesion properties which in turn makes these films more versatile and practical commercially. / M.S.

An examination of the experimental data will give the following generalizations. The stability tests indicate that the same type of acid hydrolysis of the glucose linkages occurs giving unstable, short-chain nitrates whenever rapid, harsh esterification is undertaken. This instability naturally prohibits use of such products as smokeless powder. From the results of this investigation, it seems that any continuous type of acidic nitration of viscose rayon for use in powder bags or guncotton would be highly impractical. / M.S.

We may summarize the purposes of this investigation as follows: A report on this investigation was made to Dr. John H. Yoe of the University of Virginia in order to see what reactions he considered to be of analytical significance and should be further investigated. He considers only three to be of any practical importance. They are as follows: 1. 7A-Oleic Acid. Solubility of the alkaline earth salts of some higher fatty acids. 2. 69A- 2-Acetamino 6-Aminobenzo Thiazole. A colorimetric reagent for iridium. 3. 71A 2-Hydroxy 3-Nitro 5-Sulfobenzoic Acid. A colorimetric reagent for ferric iron. A further investigation of compound 71A, as a colorimetric reagent for ferric iron, reveals that the sensitivity of this reaction is not great enough for it to be of any practical importance, since we have reagents (2) for this ion that are several times more sensitive. Prospective reagent No. 69A for iridium is being further investigated by Mr. J. R. Noell (1). A report on 7A will be taken up in Part II of this thesis. 1. It has been shown that there is very little difference in the solubility of the same alkaline earth salt of stearic, oleic, linoleic, and linolenic acids in the solvents, water, benzene, absolute ethyl alcohol and ether. 2. It has been shown that there is very little difference in the solubility of the different alkaline earth salt of stearic, oleic, linoleic, and linolenic acids in the solvents, water, benzene, absolute ethyl alcohol and ether, and benzene. 3. The solubility of the alkaline earth salt of these acids increases slightly with unsaturation, but does not increase as the degree of unsaturation increases. / M.S.

The investigation was begun in an attempt to obtain a cellulose nitrate, cloth, (by the direct nitration of cotton cloth) which would be suitable for use in powder bags. Such a product must have a rapid rate of combustion, a very small amount of ash, and a tensile strength which would meet Government requirements for powder bags. The results of the research conducted upon the nitration of cotton cloth indicate that a high percent of nitrogen can be obtained in a very short time. However, in most cases the action needed to produce a high nitrate is so drastic that the tensile strength of the cloth is greatly reduced. This degradation is most likely due to the hydrolytic action of the acids. / M.S.

M.S.

1. The reactions of monochlormethyl ether with the magnesium cadmium and zinc derivatives of normal propyl and isopropyl halides were investigated. 2. In both the normal propyl and iso-propyl aeries, the yields of the expected condensation products RCH₂OCH₃ appeared in the order RMgX>R₂Zn>R₂Cd. 3. The primary organometallic compounds reacted with monochlormethyl ether in higher yields than did the corresponding secondary compounds. 4. A new method was developed for preparing a zinc-copper couple by heating a mixture of zinc dust and powdered cupric citrate under an atmosphere of nitrogen. 5. This method gave a couple superior in laboratory use to the zinc-copper couples how generally employed. / Master of Science

Carbon tetrachloride (CCl₄ ) was closely evaluated as a carrier solvent in high-performance liquid chromatography (HPLC). The separation and retention trends of ninety-two selected compounds from eleven chemical classes (furans, thiophenes, aromatic hydrocarbons, ethers, esters, ketones, aldehydes, aromatic amines, azaarenes, alcohols and phenols) on three analytical silica-bonded phase (amino (NH₂), cyano (CN) and polar amino-cyano (PAC)) columns were investigated with CCl₄ and refractive index (RI) detection. The sample capacity and column efficiency of each of the NH₂ and PAC columns were measured and compared. Besides, a method of determining unmeasurable capacity factors (k' values) was found and illustrated. / M.S.