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Poly(urethane-benzoxazine)s

Journal of Polymer Research volume 21, Article number: 586 (2014) Cite this article

Abstract

New poly(urethane-benzoxazine)s (PUB) were prepared by the Diels-Alder reaction of bisfuranic benzoxazine monomers, containing additional polymerizable allyl groups (2,2′-bis(8-allyl-3-furfuryl-3,4-dihydro-2H-1,3-benzoxazinyl)isopropane), to bisma-leimides having urethane structure. The thermal behaviour of intermediate cycloadducts was evaluated by TGA, DMA and DSC measurements and their curing behaviour was investigated by DSC, 1H-NMR and ATR-FTIR analysis. Introduction of urethane bismaleimide in the networks structure leads to an increase of flexibility and thermal stability of resulted films, in comparison with polyurethanes, but mechanical properties has not been optimized, probable due to the large amount of soft segments (47–79.98 %) that leads to a phase separation.

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Acknowledgments

Paper dedicated to the 65th anniversary of “Petru Poni” Institute of Macromolecular Chemistry of Romanian Academy, Iasi, Romania.

One of the authors (C-D.V.) acknowledges the financial support of a grant of the Romanian National Authority for Scientific Research, CNCS–UEFISCDI, project number PN-II-ID-PCE-2011-3-0187.

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Authors and Affiliations

  1. Laboratory of Poliaddition and Photochemistry “Petru Poni” Institute of Macromolecular Chemistry, Iasi, RO-700487, Romania

    C. Gaina, O. Ursache & V. Gaina

  2. Centre of Advanced Research in Bionanoconjugates and Biopolymers, “Petru Poni” Institute of Macromolecular Chemistry, Iasi, RO-700487, ROMANIA

    C. D. Varganici

Authors
  1. C. Gaina
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  2. O. Ursache
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  3. V. Gaina
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  4. C. D. Varganici
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Correspondence to V. Gaina.

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Gaina, C., Ursache, O., Gaina, V. et al. Poly(urethane-benzoxazine)s. J Polym Res 21, 586 (2014). https://doi.org/10.1007/s10965-014-0586-1

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  • DOI: https://doi.org/10.1007/s10965-014-0586-1

Keywords

  • Polybenzoxazine
  • Diels-Alder reaction
  • Curing reaction
  • Bismaleimides