Photothermal polymerization of benzoxazines

Web of Science: 5 cites, Scopus: 5 cites, Google Scholar: cites

(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)

Data:	2022
Resum:	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.
Ajuts:	Agencia Estatal de Investigación PID2019-106171RB-I00 Agència de Gestió d'Ajuts Universitaris i de Recerca 2017/SGR-465
Nota:	Altres ajuts: Universitat Autònoma de Barcelona PIF predoctoral fellowship
Drets:	Tots els drets reservats.
Llengua:	Anglès
Document:	Article ; recerca ; Versió acceptada per publicar
Publicat a:	Polymer Chemistry, Vol. 13, Issue 36 (September 2022) , p. 5256-5264, ISSN 1759-9962

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Registre creat el 2022-11-02, darrera modificació el 2023-10-04