Poly(urethane-benzoxazine)s

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-2 H -1,3-benzoxazinyl)isopropane), to bisma-leimides having urethane structure. The thermal...

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Bibliographic Details
Published in:Journal of polymer research 2014-11, Vol.21 (11), p.1-11, Article 586
Main Authors: Gaina, C., Ursache, O., Gaina, V., Varganici, C. D.
Format: Article
Language:English
Subjects:
Bismaleimides
Characterization and Evaluation of Materials
Chemistry
Chemistry and Materials Science
Differential scanning calorimetry
Flexibility
Industrial Chemistry/Chemical Engineering
Mechanical properties
Monomers
Original Paper
Polymer Sciences
Polyurethane resins
Segments
Urethanes
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Summary: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-2 H -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, 1 H-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.
ISSN:1022-9760
1572-8935
DOI:10.1007/s10965-014-0586-1