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Synthesis and characterization of siloxane copolyesters containing phenylindane linkages
Author(s) -
Waghmare P. B.,
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.23910
Subject(s) - siloxane , thermogravimetric analysis , materials science , differential scanning calorimetry , polymer chemistry , copolyester , condensation polymer , glass transition , organic chemistry , polymer , composite material , chemistry , polyester , physics , thermodynamics
A novel series of siloxane copolyesters containing 1,1,3‐trimethyl‐3‐( p ‐hydroxyphenyl)‐5‐indanol (phenylindane bisphenol), diphenyl terephthalate (DPT), diphenyl isophthalate (DPI), and eugenol end‐capped siloxanes in varying ratios were prepared at a temperature range of 200–290°C under reduced pressure using dibutyl tin dilaurate catalyst by melt polycondensation. The siloxane‐containing copolyesters were characterized by infrared and 1 H NMR spectroscopy, elemental analysis, solution viscosity, thermogravimetric analysis, differential scanning calorimetry, and X‐ray diffraction. The effect of incorporation of siloxane moiety was studied on the properties of phenyl indane/DPT/DPI coplyester. The glass transition temperatures of copolyesters were decreased from 235 to 124°C by incorporation of 10% eugenol end‐capped siloxane without affecting the thermal properties. All copolyesters were found to be soluble in commonly used organic solvents and had film forming properties. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 101: 2668–2674, 2006