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Hybrid Materials with Antimicrobial Properties Based on Hyperbranched Polyaminopropylalkoxysiloxanes Embedded with Ag Nanoparticles.
- Source :
-
Pharmaceutics . Mar2023, Vol. 15 Issue 3, p809. 21p. - Publication Year :
- 2023
-
Abstract
- New hybrid materials based on Ag nanoparticles stabilized by a polyaminopropylalkoxysiloxane hyperbranched polymer matrix were prepared. The Ag nanoparticles were synthesized in 2-propanol by metal vapor synthesis (MVS) and incorporated into the polymer matrix using metal-containing organosol. MVS is based on the interaction of extremely reactive atomic metals formed by evaporation in high vacuum (10ā4ā10ā5 Torr) with organic substances during their co-condensation on the cooled walls of a reaction vessel. Polyaminopropylsiloxanes with hyperbranched molecular architectures were obtained in the process of heterofunctional polycondensation of the corresponding AB2-type monosodiumoxoorganodialkoxysilanes derived from the commercially available aminopropyltrialkoxysilanes. The nanocomposites were characterized using transmission (TEM) and scanning (SEM) electron microscopy, X-ray photoelectron spectroscopy (XPS), powder X-ray diffraction (PXRD) and Fourier-transform infrared spectroscopy (FTIR). TEM images show that Ag nanoparticles stabilized in the polymer matrix have an average size of 5.3 nm. In the Ag-containing composite, the metal nanoparticles have a "core-shell" structure, in which the "core" and "shell" represent the M0 and MĪ“+ states, respectively. Nanocomposites based on silver nanoparticles stabilized with amine-containing polyorganosiloxane polymers showed antimicrobial activity against Bacillus subtilis and Escherichia coli. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 19994923
- Volume :
- 15
- Issue :
- 3
- Database :
- Academic Search Index
- Journal :
- Pharmaceutics
- Publication Type :
- Academic Journal
- Accession number :
- 162816236
- Full Text :
- https://doi.org/10.3390/pharmaceutics15030809