Effects of γ‐aminopropyltriethoxylsilane on morphological characteristics of hybrid nylon‐66‐based membranes before electron beam irradiation

Leo, C.P.; Linggawati, Amilia; Mohammad, Abdul Wahab; Ghazali, Zulkafli

doi:10.1002/app.34393

Cited by 8 publications

(8 citation statements)

References 65 publications

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“…In Figure (b), the XRD pattern of pure nylon 6,6 nanofibers exhibited the reflection of (100) and (010, 110) planes at about 20.3° and 23.7° indicating α‐type crystals structure of nylon 6,6 (triclinic phase) . The α1 peak (2θ ≅ 20.3°) arises from the distance between hydrogen bonded chains, while the separation of hydrogen‐bonded planar sheets results in the occurrence of α2 peak (2θ ≅ 23.7°) .…”

Section: Resultsmentioning

confidence: 97%

Electrospun nylon 6,6 nanofibers functionalized with cyclodextrins for removal of toluene vapor

Kayacı

Sen

Durgun

et al. 2015

J of Applied Polymer Sci

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Functional nylon 6,6 nanofibers incorporating cyclodextrins (CD) were developed via electrospinning. Enhanced thermal stability of the nylon 6,6/CD nanofibers was observed due to interaction between CD and nylon 6,6. X-ray photoelectron spectroscopy and attenuated total reflectance Fourier transform infrared spectroscopy studies indicated the existence of some CD molecules on the surface of the nanofibers. Electrospun nylon 6,6 nanofibers without having CD were ineffective for entrapment of toluene vapor from the environment, whereas nylon 6,6/CD nanofibrous membranes can effectively entrap toluene vapor from the surrounding by taking advantage of the high surface-volume ratio of nanofibers with the added advantage of inclusion complexation capability of CD presenting on the nanofiber surface. The modeling studies for formation of inclusion complex between CD and toluene were also performed by using ab initio techniques. Our results suggest that nylon 6,6/CD nanofibrous membranes may have potential to be used as air filters for the removal of organic vapor waste from surroundings. © 2015 Wiley Periodicals, Inc

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Section: Resultsmentioning

confidence: 97%

Electrospun nylon 6,6 nanofibers functionalized with cyclodextrins for removal of toluene vapor

Kayacı

Sen

Durgun

et al. 2015

J of Applied Polymer Sci

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“…61 The XRD pattern of the pristine nylon 6,6 nanofibers exhibited two distinct diffraction peaks at about 20.4°(100) and 23.0°(010, 110) confirming the presence of the α phase in the sample. 61,62 The α1 peak (2θ = 20.4°) corresponds to the distance between hydrogen-bonded chains, whereas the α2 peak (2θ = 23°) corresponds to the separation of hydrogen-bonded sheets. 61 The absence of the reflections of β phase at 2θ values of ∼12 and 19°or γ1 peak (2θ = 13°) and γ2 peak (2θ = 22°) 61 in the XRD pattern of pristine nylon 6,6 nanofibers indicates that the nylon 6,6 nanofibers have a pure triclinic α phase comprising hydrogen-bonded sheets.…”

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confidence: 99%

Polymer–Inorganic Core–Shell Nanofibers by Electrospinning and Atomic Layer Deposition: Flexible Nylon–ZnO Core–Shell Nanofiber Mats and Their Photocatalytic Activity

Kayacı

Özgit-Akgün

Dönmez

et al. 2012

ACS Appl. Mater. Interfaces

149

122

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Polymer−inorganic core−shell nanofibers were produced by two-step approach; electrospinning and atomic layer deposition (ALD). First, nylon 6,6 (polymeric core) nanofibers were obtained by electrospinning, and then zinc oxide (ZnO) (inorganic shell) with precise thickness control was deposited onto electrospun nylon 6,6 nanofibers using ALD technique. The bead-free and uniform nylon 6,6 nanofibers having different average fiber diameters (∼80, ∼240 and ∼650 nm) were achieved by using two different solvent systems and polymer concentrations. ZnO layer about 90 nm, having uniform thickness around the fiber structure, was successfully deposited onto the nylon 6,6 nanofibers. Because of the low deposition temperature utilized (200°C ), ALD process did not deform the polymeric fiber structure, and highly conformal ZnO layer with precise thickness and composition over a large scale were accomplished regardless of the differences in fiber diameters. ZnO shell layer was found to have a polycrystalline nature with hexagonal wurtzite structure. The core−shell nylon 6,6-ZnO nanofiber mats were flexible because of the polymeric core component. Photocatalytic activity of the core−shell nylon 6,6-ZnO nanofiber mats were tested by following the photocatalytic decomposition of rhodamine-B dye. The nylon 6,6-ZnO nanofiber mat, having thinner fiber diameter, has shown better photocatalytic efficiency due to higher surface area of this sample. These nylon 6,6-ZnO nanofiber mats have also shown structural stability and kept their photocatalytic activity for the second cycle test. Our findings suggest that core−shell nylon 6,6-ZnO nanofiber mat can be a very good candidate as a filter material for water purification and organic waste treatment because of their photocatalytic properties along with structural flexibility and stability. KEYWORDS: electrospinning, ALD (atomic layer deposition), nanofibers, ZnO, core−shell, photocatalytic activity, nylon ■ INTRODUCTIONOne-dimensional (1D) nanostructures such as nanofibers have distinctive properties that can offer good opportunities for developing advanced materials and devices.1−3 Among the other nanofiber fabrication methods, electrospinning has gained growing interest in the past decade because this technique is quite versatile and cost-effective for producing functional nanofibers from variety of materials including polymers, polymer blends, emulsions, suspensions, sol−gels, metal oxides, composite structures as well as nonpolymeric systems, etc. 2−8Electrospun nanofibers and their nanofiber mats have remarkable characteristics including a very high specific surface area, pore sizes within the nanoscale and very lightweight since the fiber diameter ranges from one micrometer down to a few tens of nanometers. Moreover, the control of the fiber surface morphology, fiber orientation, and cross-sectional configuration, and design flexibility for physical/chemical modification is quite feasible for obtaining multifunctional electrospun nanofibers. Because of their exceptional pr...

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“…The XRD pattern of nylon net exhibited two broad peaks at 20.5° and 23.5° (see * from Figure 2 a) related to the diffraction of (100) and (010, 110) crystal planes. This result indicates that the nylon was in the α state, the registered peaks being attributed to the distance between the hydrogen-bonded chains and the separation of hydrogen-bonded sheets, respectively [ 36 , 37 ]. Likewise, the nylon-ZnO diffractogram revealed a nylon signature and diffraction peaks at 2θ: 31.9°, 34.5°, 36.3°, 47.6° and 56.7° assigned to (100), (002), (101), (102) and (110) planes of the hexagonal wurtzite phase of ZnO (ICDD 00-035-1451).…”

Section: Resultsmentioning

confidence: 99%

Synthesis of Core–Double Shell Nylon-ZnO/Polypyrrole Electrospun Nanofibers

et al. 2020

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Core–double shell nylon-ZnO/polypyrrole electrospun nanofibers were fabricated by combining three straightforward methods (electrospinning, sol–gel synthesis and electrodeposition). The hybrid fibrous organic–inorganic nanocomposite was obtained starting from freestanding nylon 6/6 nanofibers obtained through electrospinning. Nylon meshes were functionalized with a very thin, continuous ZnO film by a sol–gel process and thermally treated in order to increase its crystallinity. Further, the ZnO coated networks were used as a working electrode for the electrochemical deposition of a very thin, homogenous polypyrrole layer. X-ray diffraction measurements were employed for characterizing the ZnO structures while spectroscopic techniques such as FTIR and Raman were employed for describing the polypyrrole layer. An elemental analysis was performed through X-ray microanalysis, confirming the expected double shell structure. A detailed micromorphological characterization through FESEM and TEM assays evidenced the deposition of both organic and inorganic layers. Highly transparent, flexible due to the presence of the polymer core and embedding a semiconducting heterojunction, such materials can be easily tailored and integrated in functional platforms with a wide range of applications.

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Effects of γ‐aminopropyltriethoxylsilane on morphological characteristics of hybrid nylon‐66‐based membranes before electron beam irradiation

Cited by 8 publications

References 65 publications

Electrospun nylon 6,6 nanofibers functionalized with cyclodextrins for removal of toluene vapor

Electrospun nylon 6,6 nanofibers functionalized with cyclodextrins for removal of toluene vapor

Polymer–Inorganic Core–Shell Nanofibers by Electrospinning and Atomic Layer Deposition: Flexible Nylon–ZnO Core–Shell Nanofiber Mats and Their Photocatalytic Activity

Synthesis of Core–Double Shell Nylon-ZnO/Polypyrrole Electrospun Nanofibers

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