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High Performance Polymers
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Water as Solvent in Polyimide Synthesis III: Towards the Synthesis of Polyamideimides

John Chiefari

CSIRO Molecular Science, Clayton, Melbourne VIC, 3169 Australia

Buu Dao

CSIRO Molecular Science, Clayton, Melbourne VIC, 3169 Australia

Andrew M. Groth

CSIRO Molecular Science, Clayton, Melbourne VIC, 3169 Australia, Andrew.Groth{at}csiro.au

Jonathan H. Hodgkin

CSIRO Molecular Science, Clayton, Melbourne VIC, 3169 Australia

Four different approaches to the synthesis of polyamideimides, which employ aqueous imidization, were studied in order to assess the viability of their preparation in water. Building on previous studies of synthesizing polyimides in water both one- and two-step methods were explored. The first direct method for polyamideimide synthesis forms both the amide and imide linkages simultaneously and is limited to appropriately activated diamine monomers. The second direct method uses commercially sourced diaminobenzanilide with standard tetracarboxylic acids in an imidization step to give the polyamideimide. This method, demonstrates the viability of using amide-containing diamines in a polyimidization step to synthesize the desired polymer. The third and fourth methods are both two-step processes and use aqueous imidization to produce imide-containing monomers with either amine or carboxylic acid terminal functionality. This is followed by standard amidation to produce high-quality polyamideimides.

Key Words: Polyimide • polyamideimide • aqueous polymer synthesis • high performance resins

This version was published on August 1, 2006

High Performance Polymers, Vol. 18, No. 4, 437-451 (2006)
DOI: 10.1177/0954008306064906
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