Abstract: This paper is directed towards the development of safe, and thermally stable solid polymer electrolytes. Linear phosphorus-containing (co)polyesters are described, including their synthesis, thermal analysis, conductivity, and non-flammability. Polycondensation of phenylphosphonic dichloride (PPD) with poly(ethylene glycol) (PEG 12000) with and without bisphenol A (BA) was carried out using solid-liquid phase transfer catalysis. Potassium phosphate is used as base. Yields in the range of 85.0–88.0%, and inherent viscosities in the range of 0.32–0.58 dL/g were obtained. The polymers were characterized by gel permeation chromatography, FT-IR, 1H- and 31P-NMR spectroscopy and thermal analysis. Their flammability was investigated by measuring limiting oxygen index values. The polymers are flame retardants and begin to lose weight in the 190 °C–231 °C range. Solid phosphorus- containing (co)polyesters were complexed with lithium triflate and the resulting ionic conductivity was determined. Conductivities in the range of 10−7–10−8 S cm−1 were obtained.
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Iliescu, S.; Augusti, M.-G.; Fagadar-Cosma, E.; Plesu, N.; Fagadar-Cosma, G.; Macarie, L.; Popa, A.; Ilia, G. Synthesis of New Phosphorus-Containing (Co)Polyesters Using Solid-Liquid Phase Transfer Catalysis and Product Characterization. Molecules 2012, 17, 9090-9103.
Iliescu S, Augusti M-G, Fagadar-Cosma E, Plesu N, Fagadar-Cosma G, Macarie L, Popa A, Ilia G. Synthesis of New Phosphorus-Containing (Co)Polyesters Using Solid-Liquid Phase Transfer Catalysis and Product Characterization. Molecules. 2012; 17(8):9090-9103.
Iliescu, Smaranda; Augusti, Maite-Gyl; Fagadar-Cosma, Eugenia; Plesu, Nicoleta; Fagadar-Cosma, Gheorghe; Macarie, Lavinia; Popa, Adriana; Ilia, Gheorghe. 2012. "Synthesis of New Phosphorus-Containing (Co)Polyesters Using Solid-Liquid Phase Transfer Catalysis and Product Characterization." Molecules 17, no. 8: 9090-9103.