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In situ formation and immobilization of silver nanoparticles using thermo-responsive microgel particles and their cytotoxicity evaluation.
- Source :
-
Materials Letters . Jan2019, Vol. 235, p197-201. 5p. - Publication Year :
- 2019
-
Abstract
- Graphical abstract In situ microwave-assisted synthesis of Ag NPs using PNIPAM microgel. Highlights • In situ microwave-assisted synthesis of Ag NPs using microgel as a template. • The prepared composite Ag NPs exhibited temperature responsive behaviour. • These particles were found to be monodispersed and highly crystalline, with average particle size of 10 nm. Abstract In this study, a simple environmentally greener "in situ " chemical synthesis has been developed to prepare silver nanoparticles (Ag NPs) from chemically reduced AgNO 3 in an aqueous media of thermo-responsive microgel, using glucose as a reducing agent and by adopting a microwave irradiation technique. The thermo-responsive microgel poly- N- isopropylacrylamide-co-2-hydroxyethyl acrylate, poly (NIPAM-co-HEA) 200 nm in size was prepared by surfactant free emulsion polymerisation of a selected mixture of N- isopropylacrylamide, methylene-bis-acrylamide and 2-hydroxyethyl acrylate. This microgel acts as a mere support to immobilize Ag NPs. The formation of Ag NPs and the thermo-responsive properties of the mixture were studied using UV–visible Spectroscopy. Their structures were characterised by FE-SEM and TEM. The Ag NPs prepared by this approach appear to be monodispersed with sizes which are <15 nm. Excellent biocompatibility, cell viability and environmentally responsive properties suggested that as-prepared composite particles are ideal candidate for antibacterial, biosensors and drug delivery applications. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 0167577X
- Volume :
- 235
- Database :
- Academic Search Index
- Journal :
- Materials Letters
- Publication Type :
- Academic Journal
- Accession number :
- 132548125
- Full Text :
- https://doi.org/10.1016/j.matlet.2018.10.041