Preparation of a Ductile Biopolyimide Film by Copolymerization

We developed ductile biopolyimide (BPI) films derived from a renewable aromatic diamine, 4,4′-diaminotruxillic acid, with a mixture of two different dianhydrides. The BPI copolymers show high thermal resistance with T 10 values of over 406 °C and T g values of over 208 °C, improved tensile strength...

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Bibliographic Details
Published in:Industrial & engineering chemistry research 2016-08, Vol.55 (32), p.8761-8766
Main Authors: Shin, Hojoon, Wang, Siqian, Tateyama, Seiji, Kaneko, Daisaku, Kaneko, Tatsuo
Format: Article
Language:English
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Summary:We developed ductile biopolyimide (BPI) films derived from a renewable aromatic diamine, 4,4′-diaminotruxillic acid, with a mixture of two different dianhydrides. The BPI copolymers show high thermal resistance with T 10 values of over 406 °C and T g values of over 208 °C, improved tensile strength and elongation at break, and a Young’s modulus maintained at around 4 GPa. In addition, the copolymers showed an adhesion strength to the carbon plate of 0.22–4.47 MPa, which is similar to that of cyanoacrylate superglue. In summary, we develop tough films composed of the copolymers derived from benzophenonetetracarboxylic dianhydride and oxydiphthalic dianhydride. The film shows a strain energy as high as that of a commercial Kapton film. We confirm the ductility of the film by microscopy and tensile testing after it was completely folded.
ISSN:0888-5885
1520-5045
DOI:10.1021/acs.iecr.6b02221