화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Macromolecular Research, Vol.19, No.11, 1186-1191, November, 2011
DOI10.1007/s13233-011-1111-6  Export Citation
New Technique for the Synthesis of Polyphosphoesters
Smaranda Iliescu, Ecaterina Avram1, Aurelia Visa, Nicoleta Plesu, Adriana Popa, and Gheorghe Ilia†
  • Institute of Chemistry, Romanian Academy, 24 Mihai Viteazul Bvd., 300223, Timisoara, Romania
  • 1“Petru Poni” Institute of Macromolecular Chemistry, 41A Grigore Ghica Voda Alley, 700487, IASI, Romania
E-mail:
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), 1H and 31P 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 (Mn of ~11,800-21,600) were successfully prepared. The polymers were self-extinguishing and started losing weight at around 280-380 ℃. The glass-transition temperatures of the polymers were detected in the range of 85-180 ℃. The flammability was investigated by measuring the limiting oxygen index values.
Keywords:solid-liquid;phase transfer catalysis;polyphosphoesters.
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