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Synthesis of New Phosphorus-Containing (Co)Polyesters Using Solid-Liquid Phase Transfer Catalysis and Product Characterization
Institute of Chemistry, Romanian Academy, 24 Mihai Viteazul Bvd., Timisoara 300-223, Romania
Instituto Tecnológico de la Energía, Av. Juan de la Cierva, 24 Parque Tecnológico de Valencia, Paterna 46980 (Valencia), Spain
Polytechnic University of Timisoara T. Lalescu Street, No. 2, Timisoara 300-223, Romania
* Author to whom correspondence should be addressed.
Received: 13 June 2012; in revised form: 12 July 2012 / Accepted: 24 July 2012 / Published: 31 July 2012
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.
Keywords: phase transfer catalysis; solid polymer electrolytes; phosphorus containing (co)polyesters
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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.