Chemistry and properties of imide oligomers end-capped with phenylethynylphthalic anhydrides

doi:10.1016/0032-3861(94)90744-7

Polymer

Volume 35, Issue 22, October 1994, Pages 4857-4864

https://doi.org/10.1016/0032-3861(94)90744-7 Get rights and content

Abstract

A series of phenylethynyl-terminated imide oligomers were prepared by the reaction of aromatic dianhydride(s) with a stoichiometric excess of aromatic diamine(s) at calculated number average molecular weights of 1500–9000 g mol⁻¹ and end-capped with phenylethynylphthalic anhydrides in N-methyl-2-pyrrolidinone. Unoriented thin films cured in flowing air to 350°C exhibited tensile strengths and moduli of 105.5–139.3 MPa and 2.8–3.2 GPa at 23°C, respectively, with good retention of properties at 177°C. Stressed film specimens exhibited excellent resistance to a variety of solvents after a 2 week exposure period at ambient temperature. One phenylethynyl-terminated imide oligomer was selected for more extensive evaluation and gave high fracture toughness, adhesive and composite properties. The chemistry, physical and mechanical properties of these materials are discussed.

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Polymer paperChemistry and properties of imide oligomers end-capped with phenylethynylphthalic anhydrides

Abstract

Prog. Polym. Sci.

Polymer

Polyimides

Am. Chem. Soc. Div. Polym. Chem., Polym. Prepr.

Am. Chem. Soc. Div. Polym. Chem., Polym. Prepr.

Am. Chem. Soc. Div. Polym. Chem., Polym. Prepr.

J. Macromol. Sci.—Chem. A

Chem. Abstr.

Polymer paper
Chemistry and properties of imide oligomers end-capped with phenylethynylphthalic anhydrides