Electrospinning Functional Polyacrylonitrile Nanofibers with Polyaniline, Carbon Nanotubes, and Silver Nitrate as Additives

Kızıldağ, Nuray; Uçar, Nuray

doi:10.5772/65472

Cited by 9 publications

(5 citation statements)

References 71 publications

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“…Even after normalizing diuron and caffeine uptake on composites to the percentage of CNT mass within the ENMs (20 wt %), the sorption capacity of CNTs embedded in nanofibers is only ∼5% of that in CNT suspensions. Thus, the process of embedding CNTs into the polymer matrix results in the considerable loss of their sorption capacity presumably through CNT aggregation and direct interaction between the CNT and PAN. , Nevertheless, our uptake studies show that ENM-CNT composites should still possess sufficient capacity for measuring environmentally relevant chemical concentrations in a robust platform that, unlike CNT suspensions, is practical for field applications.…”

Section: Resultsmentioning

confidence: 90%

Polymeric Nanofiber-Carbon Nanotube Composite Mats as Fast-Equilibrium Passive Samplers for Polar Organic Contaminants

Qian

Martínez

Marek

et al. 2020

Environ. Sci. Technol.

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To improve the performance of polymeric electrospun nanofiber mats (ENMs) for equilibrium passive sampling applications in water, we integrated two types of multiwalled carbon nanotubes (CNTs; with and without surface carboxyl groups) into polyacrylonitrile (PAN) and polystyrene (PS) ENMs. For 11 polar and moderately hydrophobic compounds (−0.07 ≤ logK OW ≤ 3.13), 90% of equilibrium uptake was achieved in under 0.8 days (t 90% values) in nonmixed ENM-CNT systems. Sorption capacity of ENM-CNTs was between 2- and 50-fold greater than pure polymer ENMs, with equilibrium partition coefficients (K ENM‑W values) ranging from 1.4 to 3.1 log units (L/kg) depending on polymer type (hydrophilic PAN or hydrophobic PS), CNT loading (i.e., values increased with weight percent (wt %) of CNTs), and CNT type (i.e., greater uptake with carboxylated CNTs composites). During field deployment at Muddy Creek in North Liberty, Iowa, optimal ENM-CNTs (PAN with 20 wt % carboxylated CNTs) yielded atrazine concentrations in surface water with a 40% difference relative to analysis of a same-day grab sample. We also observed a mean percent difference of 30 (±20)% when comparing ENM-CNT sampler results to grab sample data collected within 1 week of deployment. With their rapid, high capacity uptake and small material footprint, ENM-CNT equilibrium passive samplers represent a promising alternative to complement traditional integrative passive samplers while offering convenience over large volume grab sampling.

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Section: Resultsmentioning

confidence: 90%

Polymeric Nanofiber-Carbon Nanotube Composite Mats as Fast-Equilibrium Passive Samplers for Polar Organic Contaminants

Qian

Martínez

Marek

et al. 2020

Environ. Sci. Technol.

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“…Specifically, research on PAN nanocomposite fibers in sensors, supercapacitor, batteries, electromagnetic interference (EMI) shielding, metal ion removal, and antimicrobial relevance is reviewed. 8–10 These applications need to optimize the nanofiber chemical composition, surface porosity, hydrophobicity, absorption capacity, and wettability. And future scenarios in the technological development of these nanocomposite fibers are presented.…”

Section: Introductionmentioning

confidence: 99%

Polyacrylonitrile-based nanocomposite fibers: A review of current developments

Kausar

2019

Journal of Plastic Film & Sheeting

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This is a state-of-the-art review on essential aspects, types, and applications of polyacrylonitrile-based nanocomposite fibers. Polyacrylonitrile is a commercially important acrylic polymer having superior chemical, electrical, mechanical, and thermal properties. Polyacrylonitrile fibers also possess significant scientific worth. Incorporating nanofillers (graphene, graphene oxide, carbon nanotube, metal nanoparticle) in polyacrylonitrile fibers has significantly improved the physical properties of nanocomposite fibers. The polyacrylonitrile/carbon nanotube, polyacrylonitrile/graphene, and polyacrylonitrile/inorganic nanoparticle nanocomposite fiber enhanced characteristics have been attributed to the nitrile groups interfacial bonding with the nanofiller employed. The chemical architecture, superhydrophobicity, superoleophobicity, porosity, absorption capacity, and wettability of nanofibers have led to several advantageous nanocomposite fiber applications. Energy production and storage devices, sensors, electromagnetic interference shielding materials, metal ion detoxification, and antimicrobial relevance are frequently explored areas with the polyacrylonitrile/nanoparticle nanocomposite fibers. Major challenges for nanocomposite fibers are to achieve scalable fabrication, low cost, high selectivity, excellent recyclability, and high absorption capacity. In the future, these nanocomposite fibers need extensive research effort to advance the technology and to bring them to commercialization.

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“…Natural or synthesized fibers are non-conductive; thus, CNTs and CP are used to introduce electrical properties within the fibrous matrix [ 217 ]. Moreover, CNTs offer the advantage of enhancing the mechanical properties of the fiber making this structure extremely useful in multiple applications, such as drug delivery systems, sensors or electronic devices [ 218 , 219 ].…”

Section: Cnt Embedded With Conjugated Polymersmentioning

confidence: 99%

Carbon Nanomaterials Embedded in Conductive Polymers: A State of the Art

et al. 2021

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Carbon nanomaterials are at the forefront of the newest technologies of the third millennium, and together with conductive polymers, represent a vast area of indispensable knowledge for developing the devices of tomorrow. This review focusses on the most recent advances in the field of conductive nanotechnology, which combines the properties of carbon nanomaterials with conjugated polymers. Hybrid materials resulting from the embedding of carbon nanotubes, carbon dots and graphene derivatives are taken into consideration and fully explored, with discussion of the most recent literature. An introduction into the three most widely used conductive polymers and a final section about the most recent biological results obtained using carbon nanotube hybrids will complete this overview of these innovative and beyond belief materials.

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Electrospinning Functional Polyacrylonitrile Nanofibers with Polyaniline, Carbon Nanotubes, and Silver Nitrate as Additives

Cited by 9 publications

References 71 publications

Polymeric Nanofiber-Carbon Nanotube Composite Mats as Fast-Equilibrium Passive Samplers for Polar Organic Contaminants

Polymeric Nanofiber-Carbon Nanotube Composite Mats as Fast-Equilibrium Passive Samplers for Polar Organic Contaminants

Polyacrylonitrile-based nanocomposite fibers: A review of current developments

Carbon Nanomaterials Embedded in Conductive Polymers: A State of the Art

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