Optical, bactericidal and water repellent properties of electrospun nano-composite membranes of cellulose acetate and ZnO

Anitha, S.; Balusamy, Brabu; Thiruvadigal, D. John; Gopalakrishnan, C.; Natarajan, T. S.

doi:10.1016/j.carbpol.2013.05.003

Cited by 118 publications

(46 citation statements)

References 54 publications

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“…Zinc oxide (ZnO), for example, is one of the few zinc-based compounds listed as being generally recognized as a safe (GRAS) material by the Food and Drug Administration (FDA) [20]. Even though the mechanism of action is still vaguely understood, ZnO has been successfully used as an antibacterial agent in food packaging [21], restorative dental materials [22], wound dressings [23], and in tissue engineering applications [24]. Indeed, electrospun polymer-based scaffolds/membranes loaded with ZnO have recently displayed not only antibacterial properties [25], but also enhanced cell proliferation/wound healing [26].…”

Section: Introductionmentioning

confidence: 99%

Development and characterization of novel ZnO-loaded electrospun membranes for periodontal regeneration

et al. 2015

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Objectives This study reports on the synthesis, materials characterization, antimicrobial capacity, and cytocompatibility of novel ZnO-loaded membranes for guided tissue/bone regeneration (GTR/GBR). Methods Poly(ε-caprolactone) (PCL) and PCL/gelatin (PCL/GEL) were dissolved in hexafluoropropanol and loaded with ZnO at distinct concentrations: 0 (control), 5, 15, and 30 wt.%. Electrospinning was performed using optimized parameters and the fibres were characterized via scanning and transmission electron microscopies (SEM/TEM), energy dispersive X-ray spectroscopy (EDS), Fourier transform infrared spectroscopy (FTIR), contact angle (CA), mechanical testing, antimicrobial activity against periodontopathogens, and cytotoxicity test using human dental pulp stem cells (hDPSCs). Data were analyzed using ANOVA and Tukey (α=5%). Results ZnO nanoparticles were successfully incorporated into the overall submicron fibres, which showed fairly good morphology and microstructure. Upon ZnO nanoparticles’ incorporation, the PCL and PCL/GEL fibres became thicker and thinner, respectively. All GEL-containing membranes showed lower CA than the PCL-based membranes, which were highly hydrophobic. Overall, the mechanical properties of the membranes were reduced upon ZnO incorporation, except for PCL-based membranes containing ZnO at the 30 wt.% concentration. The presence of GEL enhanced the stretching ability of membranes under wet conditions. All ZnO-containing membranes displayed antibacterial activity against the bacteria tested, which was generally more pronounced with increased ZnO content. All membranes synthesized in this study demonstrated satisfactory cytocompatibility, although the presence of 30 wt.% ZnO led to decreased viability. Significance Collectively, this study suggests that PCL- and PCL/GEL-based membranes containing a low content of ZnO nanoparticles can potentially function as a biologically safe antimicrobial GTR/GBR membrane.

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Section: Introductionmentioning

confidence: 99%

Development and characterization of novel ZnO-loaded electrospun membranes for periodontal regeneration

et al. 2015

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“…[26][27][28] These inorganic materials have attracted particular interest due to their stability in harsh processes and minimal toxicity. [31][32][33] Hwang et al 34 evaluated the antibacterial action of ZnO incorporated electrospun membrane and found that the presence of ZnO nanoparticles on the surface of the nanobres exhibited appreciable antibacterial effects against Gram-negative Escherichia coli and Gram-positive Staphylococcus aureus. Results indicated that Ag/PAN nanobers exhibited slow and long-lasting silver ion release, which provided robust antibacterial activity against both Gram-positive Bacillus cereus and Gram-negative Escherichia coli microorganisms.…”

Section: Introductionmentioning

confidence: 99%

Electrospun functionalized polyacrylonitrile–chitosan Bi-layer membranes for water filtration applications

et al. 2016

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Water scarcity has become a global systemic risk, prompting the development of more efficient filtration technologies. Recently, increasing attention has been given to low cost membrane materials such as polyacrylonitrile (PAN) nanofibers for water filtration. In this study, electrospun PAN nanofibrous membranes were functionalized with zinc oxide (ZnO) nanoparticles and coated with a layer of electrospun chitosan (Cs), in order to improve the mechanical properties, and anti-bacterial and water filtration performance of the membranes. Morphological analysis revealed that the PAN/ZnO-Cs membranes featured a structural hierarchy comprising a layer of highly porous nanofibrous PAN membranes and a less fibrous and thinner layer of a Cs coating. Addition of the Cs layer increases the tensile strength and elastic modulus of the membranes. Results acquired from a water permeability test indicated that the bi-layer membranes possessed adequate transport properties for typical membrane applications. Furthermore, the additional Cs layer and ZnO nanoparticles significantly improved the heavy metal ion adsorption performance of the PAN membranes. Moreover, the efficiency of the PAN/ ZnO-Cs membrane for bacteria filtration has a log reduction value 2 orders of magnitude higher than PAN membranes, while the efficiency of these membranes for antibacterial action (i.e. in terms of log reduction value) is 6 orders of magnitude higher than PAN membranes. These results indicate the PAN/ ZnO-Cs membranes are structurally more stable than PAN membranes, better at bacteria removal during the filtration process and better at self-cleaning (i.e. membrane biofouling resistance) than PAN membranes, signifying the potential of these membranes for water filtration applications. Fig. 7 Bacteria filtration performance of electrospun membranes. Error bars represented AE1SD from triplicate. 53890 | RSC Adv., 2016, 6, 53882-53893 This journal is

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“…The morphology of the electrospun CA nanofibre surface depends on processing parameters such as the distance between the tip and the collector, applied high voltage and the polymer concentration (Anitha et al,2013;Liu et al, 2006). As shown in figure 1A the nanofibres are cylindrical in shape and show bead free smooth surface.…”

Section: Resultsmentioning

confidence: 99%

Application of electrospun cellulose acetate nanofibre membrane based quasi-solid state electrolyte for dye sensitized solar cells

et al. 2017

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Dye Sensitized Solar Cells (DSSCs) are much more eco-friendly, low cost and easy to fabricate devices compared to silicon solar cells. In order to overcome their problems with safety and the long-term stability due to sealing problems, liquid electrolytes employed in these devices are replaced with quasi solid-state or gel electrolytes even though the overall efficiencies are somewhat lower. In this study DSSCs are fabricated and tested by replacing the conventional liquid electrolyte using a quasi-solid state electrolyte comprised of biodegradable electro spun cellulose acetate (CA) nanofibres. DSSCs fabricated with this quasi-solid state electrolytes showed an overall light to electricity conversion efficiency of 4.0% under the illumination of 100 mW cm -2 (AM 1.5). The corresponding values of short circuit current density (J sc ), open circuit voltage (V oc ) and the fill factor (FF) of this device were 9.83mA cm -2 , 699.1 mV and 0.58 respectively.

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Optical, bactericidal and water repellent properties of electrospun nano-composite membranes of cellulose acetate and ZnO

Cited by 118 publications

References 54 publications

Development and characterization of novel ZnO-loaded electrospun membranes for periodontal regeneration

Development and characterization of novel ZnO-loaded electrospun membranes for periodontal regeneration

Electrospun functionalized polyacrylonitrile–chitosan Bi-layer membranes for water filtration applications

Application of electrospun cellulose acetate nanofibre membrane based quasi-solid state electrolyte for dye sensitized solar cells

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