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Chemistry

Theses/Dissertations

1990

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Articles 31 - 33 of 33

Full-Text Articles in Physical Sciences and Mathematics

Aqueous Solubility Of Liquid Hydrocarbon Mixtures Containing Dissolved Solid Components, George G. Vadas Jan 1990

Aqueous Solubility Of Liquid Hydrocarbon Mixtures Containing Dissolved Solid Components, George G. Vadas

Dissertations, Theses, and Masters Projects

No abstract provided.


Imide/Arylene Ether Copolymers, Brian J. Jensen Jan 1990

Imide/Arylene Ether Copolymers, Brian J. Jensen

Theses and Dissertations

Three different series of imide/arylene ether block copolymers were prepared using two different imide blocks and two different arylene ether blocks. Block molecular weights studied were 3110 and 6545 g/mole for each block and all four combinations possible were prepared in each series. Also, several segmented copolymers were prepared by forming the imide segment and the copolymer in the presence of the pre-formed arylene ether block.

Two amine-terminated poly(arylene ether) blocks (ATPAE) were prepared by reacting 1,3-bis(4-fluorobenzoyl)benzene with either 2,2-bis(4-hydroxyphenyl)propane (BPA) or 9,9-bis(4-hydroxyphenyl)fluorene (BPF) and 4-aminophenol. Two anhydride-terminated poly(amic acid) blocks were prepared by reacting 4,4'-oxydianiline (ODA) or 1,3-bis(4-aminophenoxy-4’- benzoyl)benzene …


Indirect Photometric Chromatography Of Inorganic And Organic Anions Using Benzoate As An Eluent, Shahab A. Shamsi Jan 1990

Indirect Photometric Chromatography Of Inorganic And Organic Anions Using Benzoate As An Eluent, Shahab A. Shamsi

Masters Theses

For many years the determination of common inorganic and organic anions was hindered by the lack of adequately sensitive analytical techniques. The determination of these anions was laborious and time consuming (e.g. titration, precipitaion, gravimetric analysis etc.). Because of the development of high-performance liquid chromatography, the anion exchange separation of simple inorganic and organic anions is now possible. Now, there are a broad and ever-increasing array of chromatographic methods supplanting these older chemical methods. However, detection is still a problem, but indirect detection provides a practical route for the detection of non-chromophoric inorganic and organic anions.

This dissertation describes the …