New technique for the synthesis of polyphosphoesters

• Published in: Macromolecular research 2011, 19(11), , pp.1186-1191
• Main Authors: Iliescu, Smaranda, Avram, Ecaterina, Visa, Aurelia, Plesu, Nicoleta, Popa, Adriana, Ilia, Gheorghe
• Format: Article
• Language: English
• Subjects: Characterization and Evaluation of Materials; Chemistry; Chemistry and Materials Science; Complex Fluids and Microfluidics; Nanochemistry; Nanotechnology; Physical Chemistry; Polymer Sciences; Soft and Granular Matter; 고분자공학
• ISSN: 1598-5032; 2092-7673
• DOI: 10.1007/s13233-011-1111-6

Polycondensation of arylphosphonic(phosphoric)dichlorides with various bisphenols was carried out using a new technique, namely, solid-liquid phase transfer catalysis. Potassium phosphate was used as the base. The synthesis of polyphosphonate by solid-liquid phase-transfer catalyst (PTC) polycondensation of phenylphosphonic dichloride with 4,4′-cyclohexylidenebisphenol is presented in detail. The structures of the polyphosphonates and fluorine-polyphosphate were studied using this technique. The polymers were characterized by gel permeation chromatography, Fourier transform infrared spectroscopy (FTIR), 1 H and 31 P nuclear magnetic resonance (NMR) spectroscopy, differential scanning calorimetry, and thermal analysis. Yields in the range of 80.2–86.5, and inherent viscosities in the range of 1.48–2.5 dL/g were obtained. High molecular weight polymers ( M n of ∼11,800–21,600) were successfully prepared. The polymers were self-extinguishing and started losing weight at around 280–380 °C. The glass-transition temperatures of the polymers were detected in the range of 85–180 °C. The flammability was investigated by measuring the limiting oxygen index values.