Photothermal polymerization of benzoxazines
Reyes Mateo, Kevin (Universitat Autònoma de Barcelona. Departament de Química)
Marquet, Jordi (Universitat Autònoma de Barcelona. Departament de Química)
Hernando Campos, Jordi (Universitat Autònoma de Barcelona. Departament de Química)
Sebastián Pérez, Rosa Maria (Universitat Autònoma de Barcelona. Departament de Química)

Date:	2022
Abstract:	Despite the use of catalysts and initiators, high polymerization temperatures are typically required for polybenzoxazines, a severe constraint for their general application as high performance thermosets. In this work we pioneer a novel photothermal strategy for the synthesis of polybenzoxazines that takes places under light irradiation at ambient conditions. This method capitalizes on the intriguing optical properties of benzoxazine-catalyst systems, which show visible light absorption and locally generate large heat upon illumination that triggers polymerization. In this way a large variety of benzoxazine monomers can be converted into polymer materials that retain some of the relevant features of polybenzoxazines - e. g. , high char yields. In addition, our photothermal approach allows spatial control of benzoxazine polymerization, which we exploit for the fabrication of polybenzoxazine patterns via photolithography.
Grants:	Agencia Estatal de Investigación PID2019-106171RB-I00 Agència de Gestió d'Ajuts Universitaris i de Recerca 2017/SGR-465
Note:	Altres ajuts: Universitat Autònoma de Barcelona PIF predoctoral fellowship
Rights:	Tots els drets reservats.
Language:	Anglès
Document:	Article ; recerca ; Versió acceptada per publicar
Published in:	Polymer Chemistry, Vol. 13, Issue 36 (September 2022) , p. 5256-5264, ISSN 1759-9962

DOI: 10.1039/D2PY00635A

Postprint 50 p, 3.0 MB

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Research literature > UAB research groups literature > Research Centres and Groups (research output) > Experimental sciences > Group in Electrochemistry, Photochemistry and Organic Reactivity (GEFRO)
Articles > Research articles
Articles > Published articles