Development of heat storing poly(acrylonitrile) nanofibers by coaxial electrospinning

Noyan, Ezgi Ceren Boz; Önder, Emel; Sarıer, Nihal; Arat, Refik

doi:10.1016/j.tca.2018.02.008

Cited by 33 publications

(16 citation statements)

References 55 publications

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“…Here, coaxial electrospinning technology was utilised to engineer a fibrous membrane containing bioactive MTX and GLT. The physical liquid parameters (viscosity, density, electroconductivity) and electrospinning process parameters (flow rate, applied voltage, collection distance) greatly affect the spin ability of the formulation and the stability of the resulting fibers [13].…”

Section: Fabrication and Characterisation Of Peo-mtx/plc-glt Fibersmentioning

confidence: 99%

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Novel core-shell fiber delivery system for synergistic treatment of cervical cancer

Shen

Zhu

et al. 2020

Journal of Drug Delivery Science and Technology

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Ganoderma lucidum triterpenoids (GLT) possess advantageous characteristics including antiinflammatory, anti-oxidant and anti-cancer properties. In this study, a drug loaded core-shell fibrous system was engineered using the coaxial electrospinning method. The core comprised polycaprolactone and GTL whilst the shell contained polyethylene oxide with anti-cancer drug methotrexate. The morphology and structure, chemical composition, biocompatibility and in vitro release profile of the encapsulated GLT was assessed. Scanning electron microscopy images showed cylindrical fibers were developed whilst fluorescence microscopy confirmed the successful formation of core-shell fibers.Increasing GLT concentration from 2 wt% to 6 wt% resulted in an increase in mean fiber diameter from 2.29 ± 1.26 µm to 4.65 ± 2.30 µm, respectively. Fourier transform infrared spectroscopy, X-ray diffraction and differential scanning calorimetry analysis all confirmed that both drugs were encapsulated in amorphous form while contact angle hysteresis showed engineered fibres to possess good hydrophilicity. In vitro drug release tests indicated the release of methotrexate (R 2 = 0.9941) and GLT (R 2 = 0.9924) were controlled by Fick Diffusion. In vitro cell culture experiments proved that the combined use of traditional Chinese medicine and current western medicine has good application prospects in the treatment of cervical cancer.

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Section: Fabrication and Characterisation Of Peo-mtx/plc-glt Fibersmentioning

confidence: 99%

“…A range of materials can be utilized with this technology. Organic materials (including polymers) are dissolved in appropriate solvents to form homogeneous solutions without degradation [13]. The most critical advantage of these core-shell fibers is ability to load multiple drugs into the core and shell layers in a single-step process.…”

Section: Introductionmentioning

confidence: 99%

Novel core-shell fiber delivery system for synergistic treatment of cervical cancer

Shen

Zhu

et al. 2020

Journal of Drug Delivery Science and Technology

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“…Phase change materials (PCMs) can absorb, store, or release a large amount of latent heat at a constant temperature, 4,5 so they play important roles in different application fields, such as, temperature regulation, energy-saving, buildings, and smart fabrics. [6][7][8] PCMs are commonly divided into inorganic and organic compounds based on their chemical constituents, 9,10 which can maintain stable thermal properties after multiple phase change cycles. At present, organic PCMs are most used and studied because they have the advantages of negligible corrosion and super-cooling degree compared with inorganic PCMs.…”

Section: Introductionmentioning

confidence: 99%

Reversibly thermochromic and high strength core‐shell nanofibers fabricated by melt coaxial electrospinning

Wang

Fang

et al. 2021

J of Applied Polymer Sci

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Recent years, phase change materials (PCMs) with potential to store and transform energy have attracted broad attention, especially in the field of thermal energy storage. However, the instability and leak proneness of PCMs limit their universal application. In this paper, core-shell fibers with 1-tetradecanol (TD) as core and poly(vinylidene fluoride) (PVDF) as shell were prepared via melt coaxial electrospinning method, and for improvement, the dye composed of crystal violet lactone (CVL) and bisphenol A (BPA) was added to the core to endow the fiber the function of reversible thermochromism. During the preparation process, it was found that the addition of NaCl could regulate the fiber morphology and strength its mechanical property. By adjusting the concentration of shell solution and the flow rate of core solution, the high-strength reversible thermochromic fibers were produced when polymer concentration was 24 wt% with a core feed rate of 0.4 ml/h. The latent heat of these fibers is up to 88.71 J/g. Besides, its color can change from blue to white when heated, and the transition temperature is around 38 C. And 100 thermal cycle tests of the fiber showed its strong thermal stability and thermochromic property.

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“…Recently, the electrospinning technique has been utilized to produce nano-sized form-stable phase change fibers containing PCMs in a supporting polymer matrix [18,19]. Electrospinning technique has been used to fabricate the phase change-composite fibers with unique advantages such as ultrafine size, huge surface-to-volume ratio, excellent thermal performance, lightweight, and direct useage in various composites [18,20,21]. Electrospinning is a simple and versatile method that involves the usage of electrostatic force to draw a polymer solution into fibers whose diameters vary from a few nanometers to a submicron scale [18,22,23].…”

Section: Introductionmentioning

confidence: 99%

“…Coaxial electrospinning is a promising method to encapsulate PCM in the core of the fibers and to maintain it inside the polymer sheath layer of the fibers [25]. Coaxial electrospinning offers encapsulation of both hydrophilic and oleophilic PCMs in a variety of polymers and enhances the mechanical properties of the phase-change-composite nanofibers [21]. Oleophilic or hydrophilic solid-liquid PCMs such as long-chain hydrocarbons and polyethylene glycol have been encapsulated in core-sheath structured nanofibers by coaxial electrospinning method [21,[24][25][26][27][28][29][30][31][32].…”

Section: Introductionmentioning

confidence: 99%

Production and Characterization of Nanoencapsulated Phase Change Materials (PCMs) and Bicomponent PCM Nanofibers

Özkayalar

Aksoy

2021

Tekstil Ve Konfeksiyon

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The aim of this study was to fabricate the nanocapsules and nanofibers with latent heat energy storage properties. Therefore, phase change materials based on fatty alcohols were used as latent heat energy storage materials. N-Dodecanol and 1-tetradecanol fatty alcohols were nanoencapsulated by poly(methyl methacrylate-co-methacrylic acid) (p(MM-co-MA)) wall using emulsion polymerization method. Prepared nanocapsules were incorporated in polyacrylonitrile nanofibers using the co-axial electrospinning method. In this study, a two-stage (TS) emulsion polymerization process was defined and compared to the known emulsion polymerization method defined as one-stage (OS). Nanocapsules were characterized by Fourier-transform infrared (FT-IR) spectroscopy, transmission electron microscopy (TEM), differential scanning calorimeter (DSC), and thermogravimetric analyzer (TGA). According to the results, typical core-shell structured, spherical-shaped, uniform nano-sized particles having high thermal stability and energy storage capacity were fabricated successfully. Enthalpy values of the nanocapsules prepared by the TS process were higher and reached up to 171 J/g. It was concluded that the thermal degradation stability of the nanocapsules could be improved using the TS emulsion polymerization method. Moreover, the nanocapsules were incorporated in polyacrylonitrile nanofibers using the co-axial electrospinning method, and composite nanofibers having 19 J/g energy storage capacities were produced. Although the surfaces of the prepared coresheath structured nanofibers were rough and coarse, their diameter distribution was unimodal.

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Development of heat storing poly(acrylonitrile) nanofibers by coaxial electrospinning

Cited by 33 publications

References 55 publications

Novel core-shell fiber delivery system for synergistic treatment of cervical cancer

Novel core-shell fiber delivery system for synergistic treatment of cervical cancer

Reversibly thermochromic and high strength core‐shell nanofibers fabricated by melt coaxial electrospinning

Production and Characterization of Nanoencapsulated Phase Change Materials (PCMs) and Bicomponent PCM Nanofibers

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