Multifunctional Benzoxazines Feature Low Polymerization Temperature and Diverse Polymer Structures

Polymers

Marc Soto¹  Katharina Koschek¹  Matthias Hiller²  Hartmut Oschkinat² 

[1] Adhesive Bonding Technology and Surfaces, Fraunhofer Institute for Manufacturing Technology and Advanced Materials IFAM, Wiener Strasse 12, Bremen 28359, Germany;NMR-supported Structural Biology, Leibniz-Institut für Molekulare Pharmakologie, Robert-Rössle-Strasse 10, Berlin 13125, Germany;

关键词: benzoxazine;    polybenzoxazine;    thermosets;    ring-opening polymerization;   

DOI  :  10.3390/polym8080278

来源: DOAJ

【 摘 要 】

3,4-dihydro-3-phenyl-2H-1,3-benzoxazines derived from phenol-, resorcinol-, and phloroglucinol give monomers with one, two, and three oxazine units at a single benzene ring, respectively. Aside from the synthesis and characterization of such multifunctional benzoxazines, reactivity and polymerization behavior is studied in dependence of the oxazine functionality. Monomer reactivities are directly related to the number of oxazine functionalities present at the benzene ring yielding the lowest polymerization temperature for the trifunctional phloroglucinol-based benzoxazine. Comparing the polymerization processes and resulting structures, the trifunctional benzoxazine derivative enter new polymerization pathways, which include methylene linkages bridging aniline units, as well as the formation of carbonyl-derived structures.

【 授权许可】

Unknown