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Synthesis and characterization of copolyarylates using tin octoate as a catalyst
Author(s) -
Waghmare P. B.,
Pathak P.,
Deshmukh S. A.,
Idage S. B.,
Idage B. B.
Publication year - 2006
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.22953
Subject(s) - thermogravimetric analysis , tin , materials science , differential scanning calorimetry , catalysis , polymerization , glass transition , polymer chemistry , nuclear chemistry , polymer , glycolic acid , chemical engineering , lactic acid , organic chemistry , chemistry , composite material , physics , engineering , metallurgy , thermodynamics , genetics , biology , bacteria
A series of copolyarylates of bisphenol A (BPA) with varying ratios of diphenyl terephthalate (DPT) and diphenyl isophthalate (DPI) were prepared by melt polymerization at a temperature ranging from 200 to 290°C under reduced pressure in the presence of tin octoate catalyst. Tin octoate catalyst has been extensively used for the preparation of biodegradable polymers namely, poly(lactic acid), poly(glycolic acid), and poly(lactide‐glycolide) copolyesters. However, there are no reports on the preparation of copolyesters by melt polymerization using tin octoate catalyst. The effect of tin octoate catalyst was studied on the preparation of BPA/DPT/DPI copolyarylates. The copolyarylates were characterized by infrared and 1 H NMR spectroscopy, solution viscosity, thermogravimetric analysis, differential scanning calorimetry, and X‐ray diffraction. The solution viscosities of copolyarylates were varied from 0.43 to 0.56 dL/g and the glass transition temperature ( T g ) of copolyarylates was varied from 155 to 222°C by varying the ratio of DPT and DPI. Most of the copolyarylates were found to be soluble in commonly used organic solvents and had film‐forming properties. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 101: 70–77, 2006