In situ preparation of silver–polyacrylonitrile nanocomposite fibres

Karbownik, Iwona; Rac, Olga; Fiedot, Marta; Suchorska-Woźniak, Patrycja; Teterycz, Helena

doi:10.1016/j.eurpolymj.2015.06.024

Cited by 19 publications

(17 citation statements)

References 27 publications

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“…The average molecular weight of PANI was 50 times less than PAN. Moreover, a significantly lower value of the consistency coefficient of spinning solutions containing PANI may be related to the occurrence of interactions between the PAN and PANI chains [ 19 , 20 ].…”

Section: Resultsmentioning

confidence: 99%

The Preparation and Characterization of Polyacrylonitrile-Polyaniline (PAN/PANI) Fibers

et al. 2019

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The paper presents a method of modifying polyacrylonitrile (PAN) fibers using polyaniline (PANI). The PAN fibers were doped with polyaniline that was obtained in two different ways. The first consisted of doping a spinning solution with polyaniline that was synthesized in an aqueous solution (PAN/PANI blended), and the second involved the synthesis of polyaniline directly in the spinning solution (PAN/PANI in situ). The obtained fibers were characterized by the methods: X-ray powder diffraction (XRD), scanning electron microscope (SEM), fourier-transform infrared spectroscopy (FTIR), thermogravimetry (TG) and differential scanning calorimetry (DSC). Analysis of the results showed strong interactions between the nitrile groups of polyacrylonitrile and polyaniline in the PAN/PANI in situ fibers. The results of mechanical strength tests indicated that the performance of the PAN/PANI mixture significantly improved the mechanical parameters of polyaniline, although these fibers had a weaker strength than the unmodified PAN fibers. The fibers obtained as a result of the addition of PANI to PAN were dielectric, whereas the PANI-synthesized in situ were characterized by a mass-specific resistance of 5.47 kΩg/cm2.

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Section: Resultsmentioning

confidence: 99%

The Preparation and Characterization of Polyacrylonitrile-Polyaniline (PAN/PANI) Fibers

et al. 2019

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“…The pure AgNP dispersion in DMF clearly shows the expected absorption band with a peak maximum at 414 nm, which relates to the characteristic surface plasmon resonance (SPR) of metallic Ag nanoparticles with a diameter below $10 nm at a wavelength around 400 nm. 35 However, the broadness of the spectrum and the shi of its peak towards a higher wavelength indicate the formation of particles with bigger diameters. The spectrum of the PAN solution shows an intense band with a sharp maximum at $280 nm and a weak shoulder band at a wavelength of $318 nm.…”

Section: Electrospinning Of the Agnps/pan Composite Nanobresmentioning

confidence: 99%

“…Several publications describe the use of Ag/PAN nanocomposite bres for catalytic and antibacterial applications. [32][33][34][35][36] In contrast, very few results have been reported on the use of CNFs as conductive materials. Park et al studied the electrochemical behaviour of PAN/Ag-based carbon nanobres using cyclic voltammetry (CV).…”

Section: Introductionmentioning

confidence: 99%

Electrical conductivity of silver nanoparticle doped carbon nanofibres measured by CS-AFM

et al. 2019

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“…We determined this value experimentally by spinning many fiber/nanoparticle admixtures. We have investigated in situ addition of silver nanoparticles to polyacrylonitrile fibers, revealing that the nanoparticles dilute the spinning solution (Karbownik et al 2015). High temperature and the alkalinity of NMMO may cause cellulose degradation.…”

Section: Spinning Of Fibersmentioning

confidence: 99%

Synthesis of silver nanoparticles in NMMO and their in situ doping into cellulose fibers

et al. 2017

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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.

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In situ preparation of silver–polyacrylonitrile nanocomposite fibres

Cited by 19 publications

References 27 publications

The Preparation and Characterization of Polyacrylonitrile-Polyaniline (PAN/PANI) Fibers

The Preparation and Characterization of Polyacrylonitrile-Polyaniline (PAN/PANI) Fibers

Electrical conductivity of silver nanoparticle doped carbon nanofibres measured by CS-AFM

Synthesis of silver nanoparticles in NMMO and their in situ doping into cellulose fibers

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