Título
Synthesis of triazole-functionalized porous polymers using click reactions (Síntesis de polímeros porosos funcionalizados con grupos triazol mediante reacciones tipo click)
Autor
MELISA TREJO MALDONADO
Nivel de Acceso
Acceso Abierto
Materias
Resumen o descripción
This dissertation aimed to investigate the synthesis of poly(styrene)-block-poly(lactic acid) (PS-b-PLA) copolymers with triazole derivatives as a junction between blocks. The synthetic pathway towards the obtention of these copolymers comprised the synthesis of a benzylic initiator that is active in an Atomic Transfer Radical Polymerization (ATRP) to obtain a polystyrene (PS) precursor, a Ring Opening Polymerization (ROP) to obtain a polylactic acid (PLA) precursor, and a ‘click’ chemistry coupling of their end functional groups, the synthesized copolymers were used as templates for the preparation of thin films. Self-assembly behavior of these films was studied by Solvent Vapor Annealing (SVA), Thermal Annealing (TA) and Hydrolysis of the as-spun substrates and monitored their morphological changes by means of Scanning Electron Microscopy (SEM) and Atomic Force Microscopy (AFM) techniques. Self-assembly via SVA and TA proved to be strongly dependent on the pretreatment of the substrates. The as-spun substrates exhibited the formation of pores on the surface, which is in good agreement with the cylinder morphology that is usually expected for these systems. It was concluded that as- spun films can be a good alternative to form an ordered pattern at a nanoscale to form a triazole functionalized porous polystyrene matrix after selectively removing the PLA microdomains. The newly functionalized porous matrix can be applied as templates for the preparation of nanomaterials or in the energy storage field in electronics.
Fecha de publicación
2022
Tipo de publicación
Tesis de doctorado
Recurso de información
Formato
application/pdf
Repositorio Orígen
Repositorio Institucional del Centro de Investigación en Química Aplicada
Descargas
27