New organosoluble polyarylates containing pendent fluorene units: synthesis, characterization and thermal behaviour

  • Yogeshwar K. Chamkure
  • Rakesh K. SharmaEmail author


The new pendent bisphenol containing flourene unit, 1,1-bis-[(4-hydroxyphenyl)-1-(9H-fluoren-2-yl)]ethane (BHPFE) are synthesized from commercially available 2-acetylfluorene and phenol and then utilized for the synthesis of three new kinds of polyarylates by phase-transfer catalyzed interfacial polycondensation technique with two different benzenedicarbonyl chlorides (isophthaloyl chloride (IPC) and terephthaloyl chloride (TPC)) and its mixture of 50:50 mol%. The synthesized BHPFE and polyarylates are well-characterized using FTIR, 1H-NMR, 13C-NMR, and GPC measurements. Results of these new polyarylates are compared with aromatic polyesters derived from Bisphenol-A with TPC as well as IPC. Inherent viscosities and number average molecular weights (Mn) of polyarylates are found in the range of 0.11–0.71 dl/g and 59,516–79,371 g/mol, respectively. Compared with the polyarylates synthesized from Bisphenol-A, the polyarylates synthesized from BHPFE monomers exhibited high solubility in various organic solvents like dichloromethane, tetrahydrofuran, chloroform, pyridine and N, N-dimethylformamide and could be easily solution-cast into transparent films. The WXRD study indicated that new polyarylates are amorphous in nature. Polyarylates showed the glass transition temperature (Tg) inbetween 123–151 °C and 10% weight loss (T10) ranging from 399°–447 °C under nitrogen atmosphere indicating their thermal stability. Polyarylates having tensile strength of 3.35 to 5.36 MPa with optical transparency cutoff in the wavelength of 309–326 nm range.


Polyarylates Pendent fluorene unit Interfacial polycondensation Solubility Thermal behaviour 



The authors are acknowledged to Prof.R.C.Tandel, Head of Applied Chemistry Department for his kind help throughout the work. Authors are also thankful to Dr.Aadhar Mandot, Asst.Professor in Textile Engineering for his help in experimental work.


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Copyright information

© The Polymer Society, Taipei 2019

Authors and Affiliations

  1. 1.Applied Chemistry Department, Faculty of Technology and EngineeringThe Maharaja Sayajirao University of BarodaVadodaraIndia

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