Synthesis and Properties of some Phosphorus-containing Polyesters:
作者： Tachita Vlad-Bubulac , Corneliu Hamciuc , Oana Petreus
关键词: Tetrahydrofuran 、 Polyester 、 Thermotropic crystal 、 Thermal stability 、 Polymer chemistry 、 Materials science 、 Thermal decomposition 、 Glass transition 、 Polymer 、 Condensation polymer
摘要: Phosphorus-containing polyesters were prepared by polycondensation of 2-(6-oxido-6H-dibenz >c,e 1,2< oxaphosphorin-6-yl)-1,4-benzenediol with different aromatic dicarboxylic acids using a SOCl2/pyridine condensing agent. The polymers soluble in polar organic solvents such as N-methylpyrrolidone, N,N-dimethylformamide, tetrahydrofuran and chloroform. They showed high thermal stability having decomposition temperature above 360°C char yield at 700°C the range 19-32%. glass transition was 180-194°C. Solutions N,N-dimethylformamide fluorescence maximum emission wavelength around 362 nm. One exhibited thermotropic liquid crystalline behavior
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