| Autor: |
Macchione MA; Universidad Nacional de Córdoba, Facultad de Ciencias Químicas, Departamento de Química Orgánica, Av. Haya de la Torre y Av. Medina Allende, Córdoba, X5000HUA, Argentina. mcs@fcq.unc.edu.ar., Sacarelli MF, Racca AC, Biglione C, Panzetta-Dutari GM, Strumia MC |
| Jazyk: |
angličtina |
| Zdroj: |
Soft matter [Soft Matter] 2019 Dec 04; Vol. 15 (47), pp. 9700-9709. |
| DOI: |
10.1039/c9sm01180c |
| Abstrakt: |
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. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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