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Synthesis and characterisation of organosoluble polyimides containing the anisyl moiety
Author(s) -
Ramalingam Hariharan,
Sowrirajalu Bhuvana,
Ganesan Anuradha,
Muthusamy Sarojadevi
Publication year - 2004
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/pi.1551
Subject(s) - moiety , diamine , thermal stability , polymer chemistry , monomer , glass transition , materials science , dimethylacetamide , polyimide , dimethylformamide , polymer , organic chemistry , chemistry , composite material , solvent , layer (electronics)
A new type of diamine monomer containing the anisyl moiety was synthesized via a straight‐forward one‐step procedure. Anisaldehyde was reacted with 2,6‐dimethylaniline in the presence of dry HCl to attain bis(4‐amino‐3,5‐dimethylphenyl)anisylmethane. A series of organo‐soluble polyimides were prepared using the anisyl diamine and various aromatic dianhydrides via a two step method involving thermal imidization. All polyimides are soluble in strong polar solvents such as N ‐methyl‐2‐pyrollidone, N,N ‐Dimethylformamide, and N,N ‐DimethylAcetamide. The polyimides show excellent thermal stability and good mechanical properties. The glass transition temperatures of the polyimides are in the range 265–294 °C. The tensile strengths are in the range 79–99 MPa and the temperatures at which 10 % weight loss occurs are in the range 460–496 °C. Copyright © 2004 Society of Chemical Industry