Preparation and characterization of polymeric matrix composites incorporating selected nanoparticles with potential luminescent properties

This research focuses on synthesizing polymeric stimuli-responsive hydrogels of VCL-co-PEGDA through emulsion polymerization, incorporating varying degrees of cross-linking. Additionally, we synthesized carbon dots from avocado seeds using hydrothermal synthesis. By combining these components, nanocomposites were prepared and then the luminescent characteristics of carbon dots before and after their interaction with the polymeric matrix were studied. To assess the hydrogels' polymerization conversion,total solids in each sample were measured. All materials were characterized by FTIR, Raman and XPS spectroscopies. The particle size of both hydrogels and nanocomposites were confirmed through DLS measurements. The particle size of carbon dots was estimated by the wavelength at which they emit light. The results revealed that the presence of the VCL-co-PEGDA hydrogels in the carbon dots solution causes a increase in the photoluminescence porperties of the them. Moreover an increase in the crosslinking degree of the hydrogel corresponded to a higher enhancement in the photoluminescence intensity of the carbon dots. The biocompatible properties of both components position these luminescent nanocomposites as highly promising materials for a range of biomedical applications.

• 1. autor: Villegas Paredes, Emilia Salomé (author)
• Format: bachelorThesis
• Język: eng
• Wydane: 2024
• Hasła przedmiotowe: Puntos cuánticos de carbono; Hidrogeles termorresponsivos; Fotoluminiscencia; Cabon dots; Thermoresponsive hydrogels; Photoluminescence
• Dostęp online: http://repositorio.yachaytech.edu.ec/handle/123456789/754