The synthesis and characterization of poly[oxo(2-chloro-1, 4-phenylene) oxy terephthaloyl-co-(2chloro-1, 4-oxy carbonyl methylene oxo terephthayoly-co oxy(2-chloro-1, 4-phenylene methylene oxy oxy terephthaloyl], 1992
Thuo, Njeri
1990-1999
Two copolyesters were prepared in the melt from terephthalic acid, 1,4- phenylenediacetic acid, 2-chlo~ 1,4-phenylenediacetate and CXCX -diacetoxy-I ,4- phenylene. Neither polymer is observed to exhibit liquid crystalline properties. Polymer I has an inherent viscosity of O.39g/dl while polymer 2 has an inherent viscosity of O.64g/dl. The Thermal properties of both polymers are obtained. Thermogravimetric analysis result indicate that polymer I starn to loose weight at 2750 C, while polymer 2 which is more thermally stable only losses less than 5% of it's weight at 3500 C. Both polymers were characterized by FT-IR, lH NMR and 13c NMR, POM, DSC, TGA and viscosity.
text
application/pdf
1992-06-01
thesis
Master of Science (MS)
Clark Atlanta University
Chemistry
Polk, Malcom B.
Georgia--Atlanta
http://hdl.handle.net/20.500.12322/cau.td:1992_thuo_njeri