Use of Sulfobetaine-Based Block Copolymer as Stabilizer in Silver Nanoparticle Production and Catalytic Activity Studies
| Autor: | Damla Ulker, Serife Betül Baker, Cansel Tuncer, Vural Bütün, Gökhan Kocak |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Materials science
Tertiary amine Atom-transfer radical-polymerization Comonomer Biomedical Engineering Bioengineering 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Methacrylate 01 natural sciences Silver nanoparticle 0104 chemical sciences chemistry.chemical_compound Sulfonate chemistry Polymer chemistry Copolymer General Materials Science 0210 nano-technology Ethylene glycol |
| Zdroj: | Journal of Nanoscience and Nanotechnology. 18:2521-2529 |
| ISSN: | 1533-4880 |
| DOI: | 10.1166/jnn.2018.14338 |
| Popis: | A zwitterionic sulfobetaine-based diblock copolymer was successfully synthesized and used in the preparation and stabilization of Ag nanoparticles (AgNPs). For the related block copolymer, a precursor AB type diblock copolymer was synthesized via atom transfer radical polymerization by using a MPEG-based ATRP macroinitiator and 2-(N-dimethylamino)ethyl methacrylate (DMA) comonomer. Tertiary amine residues of PDMA blocks in poly(ethylene glycol) methyl ether-b-poly[2-(N-diethylamino)ethyl methacrylate] (MPEG-b-PDMA) precursor was then converted to polybetaine structures by reacting with 1,3-propanesultone to obtain poly(ethylene glycol) methyl ether-b-poly[3-dimethyl(methacryloyloxyethyl) ammonium propane sulfonate] (MPEG-b-PβDMA) derivative. The resulting block copolymer was successfully used as stabilizer in the chemical and sonochemical synthesis of spherical AgNPs with a diameter in the range of 7.9-9.3 nm. The average diameter of AgNPs synthesized by sonochemical method was smaller than those synthesized by chemical method. The MPEG-b-PβDMA diblock copolymer was determined to be a good stabilizer for AgNPs. The AgNPs dispersion was stable for more than 5 months without any flocculation at room temperature. The catalytic activity of polymer-AgNP dispersion was also investigated in the reduction of p-nitrophenol to p-aminophenol and was found to be quite effective. |
| Databáze: | OpenAIRE |
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