Synthesis of silver nanoparticles in NMMO and their in situ doping into cellulose fibers
| Autor: | Marta Fiedot, Helena Teterycz, Patrycja Suchorska-Woźniak, Olga Rac-Rumijowska, Iwona Karbownik |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
Nanocomposite Polymers and Plastics Metal ions in aqueous solution N-Methylmorpholine N-oxide Nanoparticle 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Silver nanoparticle 0104 chemical sciences Colloid chemistry.chemical_compound Cellulose fiber Chemical engineering chemistry Polymer chemistry Fiber 0210 nano-technology |
| Zdroj: | Cellulose. 24:1355-1370 |
| ISSN: | 1572-882X 0969-0239 |
| Popis: | We present a method for synthesis of silver nanoparticles in N-methylmorpholine N-oxide (NMMO) and the associated mechanism, as well as their use for in situ volume modification of cellulose fibers. The synthesized particles had diameter of about 4 nm, and their colloid solution was stable for 1 year. The nanoparticles were stabilized using polyethylenimine, which apart from preventing nanoparticle agglomeration, also accelerated Ag+ ion reduction and prevented NMMO degradation. A mechanism for the nanoparticle synthesis is suggested based on the electrochemical potentials of all ions in solution, with perhydroxyl ions resulting from NMMO reducing the silver ions. We also created nanocomposites from fibers and silver nanoparticles, in which the latter showed very good dispersion in the fiber volume. Such spun fibers showed improved mechanical parameters in comparison with unmodified fibers. |
| Databáze: | OpenAIRE |
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