Optimization of the electrospinning processing‐window to fabricate nanostructured PE‐b‐PEO and hybrid PE‐b‐PEO/EBBA fibers

Carrasco‐Hernandez, Sheyla; Gutierrez, Junkal; Peponi, Laura; Tercjak, Agnieszka

doi:10.1002/pen.24492

Cited by 6 publications

(6 citation statements)

References 46 publications

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“…Lactic acid oligomer (Glyplast OLA8, ester content >99%, density 1.11 g•cm −3 , viscosity 22.5 mPa.s, molecular weight 1100 g•mol −1 ) was kindly supplied by Condensia Quimica SA. PLA:OLA electrospun fiber mats were prepared in an Electrospinner Y-flow 2.2.D-XXX (Nanotechnology Solutions) following our previously reported protocol [25][26][27], working conditions of 22% of humidity and a temperature of 20 • C. Briefly, the polymers are solved in a solvent solution of chloroform:dimethilformamide, in a proportion of 4:1, overnight at ambient conditions. Then, the optimization of the main parameters of the electrospinning process were achieved and a voltage of 20 V, a distance of 17 cm between tip and collector and a polymer solution flux of 3.5 mL/h were used in order to obtain randomly-oriented electrospun fiber mats.…”

Section: Methodsmentioning

confidence: 99%

In Vitro Degradation of Plasticized PLA Electrospun Fiber Mats: Morphological, Thermal and Crystalline Evolution

et al. 2020

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In the present work, fiber mats of poly(lactic acid), PLA, plasticized by different amounts of oligomer lactic acid, OLA, were obtained by electrospinning in order to investigate their long term hydrolytic degradation. This was performed in a simulated body fluid for up to 352 days, until the complete degradation of the samples is reached. The evolution of the plasticized electrospun mats was followed in terms of morphological, thermal, chemical and crystalline changes. Mass variation and water uptake of PLA-based electrospun mats, together with pH stability of the immersion media, were also studied during the in vitro test. The results showed that the addition of OLA increases the hydrolytic degradation rate of PLA electrospun fiber mats. Moreover, by adding different amounts of OLA, the time of degradation of the electrospun fiber mats can be modulated over the course of a year. Effectively, by increasing the amount of OLA, the diameter of the electrospun fibers decreases more rapidly during degradation. On the other hand, the degree of crystallinity and the dimension of the α crystals of the electrospun fiber mats are highly affected not only by the presence but also by the amount of OLA during the whole process.

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Section: Methodsmentioning

confidence: 99%

In Vitro Degradation of Plasticized PLA Electrospun Fiber Mats: Morphological, Thermal and Crystalline Evolution

et al. 2020

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“…There are many factors affecting the formation of these undesired structures, such as solution properties (e.g., viscosity, conductivity, volatility, and surface tension) and the electrospinning parameters (e.g., feed rate, applied voltage, the distance between the collector and the tip). [71][72][73][74][75] Since electrospinning parameters were kept constant for all mats, the transformation of the beaded fiber morphology into a homogeneous morphology of smooth fibers without any beads are attributed to the changes in viscosity, conductivity, and surface tension of the spinning solutions as a result of BPPTA reinforcement. However, misalignment and folding of the nanofibers seem to increase after 3% BPPTA content due to the strong interactions between the polymer constituents.…”

Section: Morphological Analysis Of the Cnmsmentioning

confidence: 99%

Synthesis and modification of poly (p‐phenylene terephthalamide) for production of light‐weight hybrid composite armors reinforced with polymer composite nanofiber mats

Güldiken,

Gerçel

2023

Polymer Composites

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Poly (p‐phenylene terephthalamide) (PPTA) polymer was synthesized and then modified to eliminate the processing difficulties arising from its insolubility in organic solvents. The chemical structures of the synthesized PPTA and N‐butyl PPTA (BPPTA) were confirmed by elemental analysis, x‐ray diffraction, Fourier transform infrared (FTIR), and 13C‐NMR spectroscopy studies. As a result of modification, an aramid derivative that is soluble in some common solvents was obtained and added into polyacrylonitrile (PAN) matrix in solution. PAN/BPPTA composite nanofiber mats (CNMs) were fabricated by electrospinning. Mechanical tests showed that tensile strength increased by 119% with 3% BPPTA content. The fabricated CNMs were combined with aramid fabrics to produce laminated hybrid armors and ballistic tests were performed following the NATO Stanag 2920 standard. This is the first report about the integration of CNMs into multilayer armor configurations and resulted in improved ballistic limit velocity (V50) with a relatively very small weight gain and emergence of new energy absorption mechanisms.Highlights Alkylation of the para‐aramid yielded an organo‐soluble aramid derivative. Tensile strength of PAN nanofiber mat increased by 119% with 3% N‐butyl PPTA. Integration of the CNMs resulted in new ballistic impact absorption mechanisms. CNMs contribute to V50 with a very low mass gain due to their high surface area/mass.

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“…Mathieu et al 19 demonstrated the feasibility of electrospinning protein polymer multiple scaffolds using SS/PEO electrospinning on PLA. Carrasco et al 20 used electrospinning to prepare poly(ethylene‐b‐ethylene oxide) block copolymer (PE‐b‐PEO) fibers. The process window of electrospinning was optimized by changing different parameters of electrospinning.…”

Section: Introductionmentioning

confidence: 99%

Mechanism and influencing factors analysis of polyethylene oxide electrohydrodynamic printing

Wang,

Zhifu,

Liu

et al. 2023

Polymer Engineering & Sci

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Electrohydrodynamic (EHD) printing is a micro–nano printing technology based on the principles of electric field and fluid dynamics. It is characterized by high resolution, high precision, and high speed, applied to various materials, including metals, ceramics, and organic materials. Compared with traditional printing technologies, EHD printing offers advantages such as low manufacturing cost, simple process, and direct fabrication, making it highly promising in the field of micro–nano manufacturing. Polyethylene oxide (PEO) is a highly water‐soluble polymer that has been widely used in various fields due to its low toxicity and ease of processing. In this study, a finite element simulation model was developed using simulation software to simulate and analyze the mechanisms of focused jetting and deposition of PEO solution under an electric field. Based on the principles of electrohydrodynamics, a self‐built EHD printing system was used to investigate the influence of different solution mass fractions and printing parameters on fiber formation, and the optimal process window of EHD printing PEO solution was obtained. Ultimately, ordered deposition of fiber lines ranging from 1.761 to 6.093 μm was achieved. The simulation results were consistent with the experimental results, validating the effectiveness of the established model in guiding jetting outcomes.Highlights Independently building a low‐cost electrohydrodynamic (EHD) printing system. Finite element simulation of EHD printing process. Mechanism analysis of PEO solution jetting and deposition. Optimal process window for PEO solution EHD printing. Influence of key process parameters on fiber forming width.

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Optimization of the electrospinning processing‐window to fabricate nanostructured PE‐b‐PEO and hybrid PE‐b‐PEO/EBBA fibers

Cited by 6 publications

References 46 publications

In Vitro Degradation of Plasticized PLA Electrospun Fiber Mats: Morphological, Thermal and Crystalline Evolution

In Vitro Degradation of Plasticized PLA Electrospun Fiber Mats: Morphological, Thermal and Crystalline Evolution

Synthesis and modification of poly (p‐phenylene terephthalamide) for production of light‐weight hybrid composite armors reinforced with polymer composite nanofiber mats

Mechanism and influencing factors analysis of polyethylene oxide electrohydrodynamic printing

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