Synthesis and Characterization of Microcapsules as Fillers for Self-Healing Dental Composites.

Autor: Tăut, Maria Amalia, Moldovan, Marioara, Filip, Miuţa, Petean, Ioan, Saroşi, Codruţa, Cuc, Stanca, Taut, Adrian Catalin, Ardelean, Ioan, Lazăr, Viorica, Man, Sorin Claudiu
Předmět:
Zdroj: Nanomaterials (2079-4991); Nov2024, Vol. 14 Issue 22, p1853, 14p
Abstrakt: This article proposes the synthesis and characterization of (triethylene glycol dimethacrylate–N,N-dihydroxyethyl-p-toluidine) TEGDMA-DHEPT self-healing microcapsules for their inclusion in dental composite formulations. The obtaining method is the in situ emulsion polymerization of the (poly urea-formaldehyde) (PUF) coatings. The microcapsules were characterized by Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), atomic force microscopy (AFM), high-performance liquid chromatography (HPLC), and low-field nuclear magnetic resonance (NMR) techniques. The optimal formation of uniform microcapsules is achieved at a stirring speed of 800 rpm and centrifugation is no longer necessary. HPLC demonstrates that the microcapsules formed at 800 rpm show a better control of liquid release than the heterogeneous ones obtained at a lower stirring speed. The centrifuged samples have rounded shapes, with dimensions between 80 and 800 nm, while the non-centrifuged samples are more uniform, with a spherical shape and dimensions of approximately 800 nm. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index