Miscibility studies on a copolyester of bisphenol-A with terephthalic and isophthalic acids/bisphenol-A polycarbonate blends

• Published in: Journal of applied polymer science Vol. 117; no. 1; pp. 309 - 314
• Main Authors: Sakar, Dolunay, Cakar, Fatih, Cankurtaran, Ozlem, Karaman, Ferdane
• Format: Journal Article
• Language: English
• Published: Hoboken Wiley Subscription Services, Inc., A Wiley Company 05-07-2010; Wiley
• Subjects: Applied sciences; bisphenol- a polycarbonate; blends; Differential scanning calorimetry; Exact sciences and technology; Fourier transforms; Infrared spectroscopy; Miscibility; Organic polymers; Physicochemistry of polymers; Polyarylate; Polycarbonates; Polymer blends; Properties and characterization; Solution and gel properties; Viscosity; Walls; Isophthalate polymer; Polymer blends; Property composition relationship; Intrinsic viscosity; Ester polymer; Experimental study; Terephthalate polymer; Organic solution; Bisphenol A; viscosity; Dilute solution; Miscibility; Specific viscosity; Thermodynamic properties; Polycarbonate; bisphenol- a polycarbonate; blends; Interaction parameter; Rheological properties; Polyarylate
• ISSN: 0021-8995; 1097-4628; 1097-4628
• DOI: 10.1002/app.31993

The miscibility behavior of the blends of a copolyester of bisphenol-A with terephthalic and isophthalic acids (PAr) and a bisphenol-A polycarbonate (PC) was studied in dilute chloroform solutions at 25°C. The intrinsic viscosity and Huggins' parameter of the binary mixtures were determined from the intercept and slope of the linear straight line between specific viscosity and the overall polymer concentration at the studied compositions. From experimental results of the intrinsic viscosities of the mixtures, some miscibility parameters Δb, Δb′, (Δb)G, Δ[η], α, and β were obtained by applying the criteria proposed by the research groups Krigbaum and Wall, Catsiff and Hewett, Garcia et al., Sun et al. and Jiang and Han, respectively. The miscibility of mixtures was also studied by using differential scanning calorimetry and fourier transform infrared spectroscopy.