UV Protection and Photocatalytic Activity of Novel Polyamide 6/ZnO Hybrid Nanofibers via Electrospinning/Electrospraying
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ISSN 1229-9197 (print version) ISSN 1875-0052 (electronic version)
UV Protection and Photocatalytic Activity of Novel Polyamide 6/ZnO Hybrid Nanofibers via Electrospinning/Electrospraying Method Alireza Gholamhosseini1, Komeil Nasouri2*, Ahmad Mousavi Shoushtari1, and Farimah Mirgoli1 1
Department of Textile Engineering, AmirKabir University of Technology, Tehran 15875-4413, Iran 2 Department of Textile Engineering, Isfahan University of Technology, Isfahan 84156-83111, Iran (Received October 3, 2019; Revised November 27, 2019; Accepted December 6, 2019)
Abstract: In this study, novel polyamide 6 (PA6)/zinc oxide (ZnO) hybrid nanofibers membranes containing of elongatedZnO and spherical-ZnO nanoparticles were successfully fabricated using electrospinning/electrospraying method. ElongatedZnO a higher surface area than spherical-ZnO nanoparticles do because of its unique structure, thus yielding higher performance. The novel PA6/ZnO hybrid nanofibers are smooth, bead-free, and very fine diameter (130-145 nm) which shows perfect conditions for electrospinning/electrospraying technique. The electrospun PA6/elongated-ZnO hybrid nanofibers decomposed >60 % of the methylene blue in the only short time of UV irradiation. The various morphologies of ZnO nanoparticles displayed differences in photocatalytic performance and ultra violet protection factor (UPF), and were ranked as follows: elongated-ZnO > spherical-ZnO. In addition, the increase in content of ZnO nanoparticles in nanofibers leads to higher collision among them; therefore, better UV protection properties were achieved. The novel PA6/ZnO hybrid nanofibers containing of elongated-ZnO nanoparticles with UPF=48 were fabricated. In this study established that PA6/ZnO hybrid nanofibers, specifically those with the elongated-ZnO nanoparticle, can be useful in UV protecting materials. Keywords: Electrospinning, Hybrid nanofibers, ZnO nanoparticles, Morphology, UV protection
fabricated four samples including 0, 1, 5, and 10 wt% of TiO2 nanoparticles. The study claims that the more TiO2 nanoparticles are used, the less the reflection will be. The authors attribute this result to the fact that because of the transformation of electrons from valance band to conduction band, UV radiation is absorbed by TiO2 nanoparticles. In another study, Lee et al. [8] fabricated polyurethane (PU) composite nanofibers containing zinc oxide (ZnO) nanoparticles on the surface of polypropylene (PP) substrate via electrospinning method. According to this study, with the increase in linear density of nanofibrous layer and ZnO nanoparticles, the transmittance of UV radiation decreased and it becomes approximately zero in 280 to 380 nm. Chen et al. [9] reported the properties of PAN/ZnO composite nanofibers fabricated in three different morphologies including pineal-type, flower type, and sea urchin-type. They investigated the effect of different morphologies on UV protection properties and showed that samples contain sea urchin-type presented better UV protection properties due to the highe
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