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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

The synthesis and characterization of poly [oxy (2-acetyl-1, 4- phenylene) oxyterephthaloyl]

Onwunaka, Theophilus O. 01 July 1986 (has links)
This paper describes the synthesis and characterization of poly[ oxy(2-acetyl-1,4-phenyl ene) oxyterephthal oyl]. In our first attempt to synthesize the polymer, a high temperature polycondensation technique was used. This was done by polyesterification of 2-acetylhydroquinone and terephthaloyl chloride in o-dichlorobenzene. The first polymer was designated OBl-1. In our next attempt to make the polymer, OBl-2, we reacted the 2-acetyl hydroqui none with terephthal oyl chloride using a 50: 50 mixture of pyridine and chloroform as a sol vent. OBl-3 was synthesized using TCE (tetrachloroethane) as a solvent and a catalytic amount of pyridine in the reaction of the 2-acetylhydroquinone and terephthaloyl chloride. Our attempt to melt polymerize terephthalic acid. and 2-acetylhydroquinone di acetate was unsuccessful. These polymers were characterized by 13c NMR, lH NMR, FTIR (IR), polarizing optical microscopy, DSC, solubility, and solution viscometry.

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