Artículo
Dual-responsive nanogels based on oligo(ethylene glycol) methacrylates and acidic co-monomers
Macchione, Micaela Alejandra
; Sacarelli, M. Florencia; Racca, Ana Cristina
; Biglione, Catalina
; Panzetta-Dutari, Graciela Maria del Valle
; Strumia, Miriam Cristina
Fecha de publicación:
11/2019
Editorial:
Royal Society of Chemistry
Revista:
Soft Matter
ISSN:
1744-683X
e-ISSN:
1744-6848
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Ethylene glycol-based nanogels (NGs) have demonstrated their potential for the development of next-generation formulations for biomedical applications due to their interesting properties. In this work, monodispersed NGs based on oligo(ethylene glycol) methacrylates (OEG) were synthesized through free radical precipitation/dispersion polymerization assisted by ultrasonication. Di(ethylene glycol)methyl ether methacrylate (DEGMA) and oligo(ethylene glycol) methacrylate (OEGMA; Mn 475 g mol-1) were used as the main monomers, acrylic acid (AA) or itaconic acid (IA) as co-monomers (OEG-co-AA and OEG-co-IA, respectively) and tetraethylene glycol dimethacrylate (TEGDMA) as crosslinker. The physicochemical properties of OEG-co-AA and OEG-co-IA NGs were studied including hydrodynamic diameter, poly-dispersity index, zeta potential and pH/temperature responsiveness. Samples with 4 mol% of both AA and IA showed nanometric sizes. Regarding their thermo-responsiveness, unexpected differences between NGs with AA or with IA were observed. Besides, NGs did not impair the cell viability of a breast tumour cell line even when high concentrations were added to the culture medium. The properties of the synthetized NGs showed that either NGs with 4% AA or with 4% IA are outstanding candidates for biomedical applications.
Palabras clave:
Nanogels
,
Thermoresponsiveness
,
Biomedical applications
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Articulos(CIBICI)
Articulos de CENTRO DE INV.EN BIOQUI.CLINICA E INMUNOLOGIA
Articulos de CENTRO DE INV.EN BIOQUI.CLINICA E INMUNOLOGIA
Citación
Macchione, Micaela Alejandra; Sacarelli, M. Florencia; Racca, Ana Cristina; Biglione, Catalina; Panzetta-Dutari, Graciela Maria del Valle; et al.; Dual-responsive nanogels based on oligo(ethylene glycol) methacrylates and acidic co-monomers; Royal Society of Chemistry; Soft Matter; 15; 47; 11-2019; 9700-9709
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