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Synthesis and properties of organosoluble poly(ether imide)s containing 4,4′(octahydro‐4,7‐methano‐5H‐inden‐5‐ylidene) cardo group
Author(s) -
Yang ChinPing,
Chen JyhAn
Publication year - 1999
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/(sici)1097-4628(19990808)73:6<987::aid-app17>3.0.co;2-p
Subject(s) - polymer chemistry , materials science , glass transition , polymer , imide , polyimide , ether , polymerization , melting point , thermogravimetric analysis , inherent viscosity , diphenyl ether , intrinsic viscosity , chemistry , organic chemistry , composite material , layer (electronics)
A series of organosoluble aromatic poly(ether imide)s (PEIs) VIIa‐k were synthesized from 4,4′‐[(octahydro‐4,7‐methano‐5H‐inden‐5‐ylidene)bis(1,4‐phenylene)dioxy] diphthalic dianhydride (IV) and various aromatic diamines. PEIs synthesized through two‐stage polymerization had inherent viscosities of 0.51–0.64 dL/g. This series of polymers could also be synthesized from IV and diamines in a small amount of refluxing m ‐cresol in a one‐step process and had inherent viscosities of 0.65–0.87 dL/g. For the low melting point diamines (Vj and Vk), polymers could be obtained by bulk polymerization and had inherent viscosities of 0.36 and 0.41 dL/g. Polymers showed good organosolubility and could be cast into transparent, flexible, and tough polyimide films with good tensile properties. These PEIs had glass transition temperatures among 203–281°C. Thermogravimetric analyses established that these polymers were fairly stable up to 430°C, and the 10% weight loss temperatures were recorded in the range of 473–503°C in nitrogen and 481–512°C in air atmosphere. © 1999 John Wiley & Sons, Inc. J Appl Polym Sci 73: 987–996, 1999