Thermal Properties of Composite Polymer Electrolytes Poly(Ethylene Oxide)/Sodium Trifluoroacetate/Aluminum Oxide (PEO)10CF3COONa + x wt.% Al2O3

Rosero, Miguel Iban Delgado; Meneses, Nori Magali Jurado; Uribe-Kaffure, Ramiro

doi:10.3390/ma12091464

Cited by 20 publications

(13 citation statements)

References 23 publications

(24 reference statements)

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“…The representative DSC thermograms of SF, PEO, nonirradiated SF-PEO-0, and irradiated SF-PEO-25/air and SF-PEO-25/N 2 are shown in Figure C. PEO is known as a thermoplastic semicrystalline polymer. , The melting temperatures ( T m ) of PEO and SF-PEO-0 were observed at 60.6 and 62.6 °C, respectively. The T m of SF-PEO-25/air is equal to that of the nonirradiated one.…”

Section: Results and Discussionmentioning

confidence: 99%

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Strengthened Silk-Fibroin/Poly(ethylene oxide) Nonwoven Nanofibers: A Dual Green Process Using Pure Water for Electrospinning and Electron Beam-Assisted Cross-Linking

Wongkrongsak

Pangon

Pongsak

et al. 2022

ACS Sustainable Chem. Eng.

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A combination process of using pure water for electrospinning and electron beam (EB)-assisted cross-linking is proposed as a dual green route to obtain strengthened silk fibroin (SF)-based nonwoven nanofibers toward value-added healthcare or biomedical products. The first challenge is to optimize the electrospinning process using SF/poly(ethylene oxide) (PEO) in a pure water solution for the fabrication of nonwoven nanofibers. Another technological challenge is to stabilize the dissoluble SF/ PEO nonwoven nanofibers through a cross-linking network created by a free radical reaction using EB irradiation. Herein, we optimized SF/PEO combination and the electrospinning parameters for the fabrication of SF-PEO nanofibers. Under mild conditions using an aqueous solution of SF-PEO and tunable electrospinning parameters, elongated, cylindrical-shaped, and smooth SF-PEO nanofibers with a diameter of 169 ± 5 nm were obtained. The stability of the SF-PEO nanofibers could be tuned by EB irradiation with the absorbed doses in the range of 10−100 kGy. Aiming at well-defined characteristics of nanofibers, the morphology, gel fraction, kinetics of swelling behavior, chemical and packing structure, thermal and mechanical properties, cell cytotoxicity, and proliferation were characterized and relatively clarified with the influencing parameters. It is important to note that EB irradiation with a reliable sterilization dose of 25 kGy was an optimum dose for cross-linking. Upon cross-linking the SF-PEO nanofibers, the dissolution of the nanofibers reduced, they became more stable, and their mechanical properties significantly improved with an increase in ductility by ∼22-fold. The cross-linked SF-PEO nanofibers promoted cell proliferation and proved nontoxic to skin fibroblast cells (L929), and they are thus appropriate for healthcare and biomedical applications. This study shows the potential of using 3G approaches, i.e., green renewable polymers, green electrospinning, and a green EB irradiation process, for sustainable chemistry for biomedical engineering applications.

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Section: Results and Discussionmentioning

confidence: 99%

“…PEO is known as a thermoplastic semicrystalline polymer. 115,116 The melting temperatures (T m ) of PEO and SF-PEO-0 were observed at 60.6 and 62.6 °C, respectively. The T m of SF-PEO-25/air is equal to that of the nonirradiated one.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Strengthened Silk-Fibroin/Poly(ethylene oxide) Nonwoven Nanofibers: A Dual Green Process Using Pure Water for Electrospinning and Electron Beam-Assisted Cross-Linking

Wongkrongsak

Pangon

Pongsak

et al. 2022

ACS Sustainable Chem. Eng.

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“…The average roughness is ~ 15 nm with some big spike in heights due to some MoS 2 agglomerates present on the surface. Where is the melting enthalpy measured in the experiment, ⁰ = 203 J/g which is the melting enthalpy of 100% crystalline PEO [16,17]. It is observed that the percentage of crystallinity fraction (χ c %) has increased significantly up to 59.34 % in PEO-MoS 2 films in comparison to 17.34 % as that of calculated for pure films.…”

Section: 2film Morphologymentioning

confidence: 87%

Polarity Independent Resistive Switching in MoS2 Nanosheets and PEO based Nanocomposite Films

Deb

Pathak

Mohapatra

et al. 2021

Preprint

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Here, we report the exfoliation of bulk MoS 2 (molybdenum disulfide) into few layer nanosheets and then prepared nano-composite films with poly (ethylene oxide) (MoS 2 -PEO). We observed non-polar or polarity independent bistable resistive switching memory in two-terminal devices with Indium tin oxide (ITO) and aluminum (Al) as bottom and top electrode. In both bipolar and unipolar operations, it is observed that the biasing direction controls the current conduction mechanism. When positive bias is applied at the top Al electrode, the low resistance state (LRS) conduction is Ohmic type. But in opposite biasing condition, LRS conduction is space charge controlled. The current-voltage characteristics of the bipolar and unipolar switching are distinctly different in terms of their RESET process. In bipolar, the RESET process is very sharp whereas in unipolar operation it is staggered and step-wise.

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“…14,15 The rst includes passive ones. Zehao Zhou et al prepared composite electrolytes consisting of polyethylene oxide and three-dimensional SiO 2 nanobers, with a total conductivity of 9.32 Â 10 À5 S cm À1 at 30 C. 16 Francesco Colombo et al reported brush-like TiO 2 nanocrystals functionalized with low molecular weight polyethylene oxide, exhibiting an ionic conductivity of 3 Â 10 À4 S cm À1 at 70 C. 17 18 The other includes active ones. Meirong Li et al emphasized the reasonable selection of polyethylene oxide/ Li 10 GeP 2 S 12 composite electrolyte components to achieve high performance.…”

Section: Introductionmentioning

confidence: 99%

“…17 Miguel I. Delgado Rosero et al systematically analyzed the characteristics of polyethylene oxide combined with different concentrations of Al 2 O 3 . 18 The other includes active ones. Meirong Li et al emphasized the reasonable selection of polyethylene oxide/Li 10 GeP 2 S 12 composite electrolyte components to achieve high performance.…”

Section: Introductionmentioning

confidence: 99%

Metal organic framework optimized hybrid solid polymer electrolytes with a high lithium-ion transference number and excellent electrochemical stability

Han

Zhao

Wang

et al. 2022

Sustainable Energy Fuels

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Thermal Properties of Composite Polymer Electrolytes Poly(Ethylene Oxide)/Sodium Trifluoroacetate/Aluminum Oxide (PEO)10CF3COONa + x wt.% Al2O3

Cited by 20 publications

References 23 publications

Strengthened Silk-Fibroin/Poly(ethylene oxide) Nonwoven Nanofibers: A Dual Green Process Using Pure Water for Electrospinning and Electron Beam-Assisted Cross-Linking

Strengthened Silk-Fibroin/Poly(ethylene oxide) Nonwoven Nanofibers: A Dual Green Process Using Pure Water for Electrospinning and Electron Beam-Assisted Cross-Linking

Polarity Independent Resistive Switching in MoS2 Nanosheets and PEO based Nanocomposite Films

Metal organic framework optimized hybrid solid polymer electrolytes with a high lithium-ion transference number and excellent electrochemical stability

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