Novel TPU/Fe2O3 and TPU/Fe2O3/PPy nanocomposites synthesized using electrospun nanofibers investigated for analyte sensing applications at room temperature

Beniwal, Ajay; Kumar, Suraj

doi:10.1016/j.snb.2019.127384

Cited by 30 publications

(16 citation statements)

References 54 publications

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“…Furthermore, the FTIR spectrum was used to verify the formation of the PVDF/TPU, GO-PVDF/TPU, and GO/Bi 2 S 3 -PVDF/TPU composite membranes, as shown in Figure 4 . The spectrum of the pristine PVDF and TPU are consistent with literature reports [ 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 ]. The characteristic absorption peaks of PVDF are observed at 877 cm −1 , 1174 cm −1 , and 1402 cm −1 , which are attributed to the skeletal vibration of the C–C bonds and the stretching vibrations of the C–F and C–H groups, respectively.…”

Section: Resultssupporting

confidence: 91%

GO/Bi2S3 Doped PVDF/TPU Nanofiber Membrane with Enhanced Photothermal Performance

Yang

Long

et al. 2020

IJMS

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Photothermal conversion materials have attracted wide attention due to their efficient utilization of light energy. In this study, a (GO)/Bi2S3-PVDF/TPU composite nanofiber membrane was systematically developed, comprising GO/Bi2S3 nanoparticles (NPs) as a photothermal conversion component and PVDF/TPU composite nanofibers as the substrate. The GO/Bi2S3 NPs were synthesized in a one-step way and the PVDF/TPU nanofibers were obtained from a uniformly mixed co-solution by electrospinning. GO nanoparticles with excellent solar harvesting endow the GO/Bi2S3-PVDF/TPU membrane with favorable photothermal conversion. In addition, the introduction of Bi2S3 NPs further enhances the broadband absorption and photothermal conversion properties of the GO/Bi2S3-PVDF/TPU composite membrane due to its perfect broadband absorption performance and coordination with GO. Finally, the results show that the GO/Bi2S3-PVDF/TPU composite membrane has the highest light absorption rate (about 95%) in the wavelength range of 400–2500 nm. In the 300 s irradiation process, the temperature changes in the GO/Bi2S3-PVDF/TPU composite membrane were the most significant and rapid, and the equilibrium temperature of the same irradiation time was 81 °C. Due to the presence of TPU, the mechanical strength of the composite film was enhanced, which is beneficial for its operational performance. Besides this, the morphology, composition, and thermal property of the membranes were evaluated by corresponding test methods.

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Section: Resultssupporting

confidence: 91%

GO/Bi2S3 Doped PVDF/TPU Nanofiber Membrane with Enhanced Photothermal Performance

Yang

Long

et al. 2020

IJMS

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“…TPU exhibits broad diffraction peaks ranging from 18° to 24° associated with a mixture of the ordered structure of the hard phase and disordered structure of the amorphous phase [ 27 ]. In the case of CuCoF1-rGO-TPU nanocomposite, a distinct peak at 2

= 21.08° and another peak at 23° remarked the presence of TPU [ 28 ]. After the addition of more crystalline CuCoF2 in TPU, the ordering is further improved with appearance of additional peak at 18.7°.…”

Section: Resultsmentioning

confidence: 99%

CuxCo1-xFe2O4 (x = 0.33, 0.67, 1) Spinel Ferrite Nanoparticles Based Thermoplastic Polyurethane Nanocomposites with Reduced Graphene Oxide for Highly Efficient Electromagnetic Interference Shielding

ANJU

Yadav

Pötschke

et al. 2022

IJMS

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CuxCo1−xFe2O4 (x = 0.33, 0.67, 1)-reduced graphene oxide (rGO)-thermoplastic polyurethane (TPU) nanocomposites exhibiting highly efficient electromagnetic interference (EMI) shielding were prepared by a melt-mixing approach using a microcompounder. Spinel ferrite Cu0.33Co0.67Fe2O4 (CuCoF1), Cu0.67Co0.33Fe2O4 (CuCoF2) and CuFe2O4 (CuF3) nanoparticles were synthesized using the sonochemical method. The CuCoF1 and CuCoF2 exhibited typical ferromagnetic features, whereas CuF3 displayed superparamagnetic characteristics. The maximum value of EMI total shielding effectiveness (SET) was noticed to be 42.9 dB, 46.2 dB, and 58.8 dB for CuCoF1-rGO-TPU, CuCoF2-rGO-TPU, and CuF3-rGO-TPU nanocomposites, respectively, at a thickness of 1 mm. The highly efficient EMI shielding performance was attributed to the good impedance matching, conductive, dielectric, and magnetic loss. The demonstrated nanocomposites are promising candidates for a lightweight, flexible, and highly efficient EMI shielding material.

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“…Figure j displays the FTIR spectra of the gel-infilled microcapsules and pure microcapsules without a polymer gel core. For the gel-infilled microcapsules, the wide band at around 3448 cm –1 is assigned to the stretching of the N–H bond. , The band at 1636 cm –1 corresponds to the CC skeleton stretching mode, and the band at 1636 cm –1 is assigned to the inter-ring C–C mode in the polaron structure skeleton. , The band at 1112 cm –1 represents C–N, which indicates the polypyrrole (PPy) within the capsule. The same as the pure microcapsules, the band near 2963 cm –1 is attributed to the C–H bond stretching vibration in the aromatic chain of the anionic dopant, while the band at 1732 cm –1 is indexed to CO …”

Section: Results and Discussionmentioning

confidence: 99%

A Self-Healing Lithium–Sulfur Battery Using Gel-Infilled Microcapsules

Liu

Zhong

et al. 2021

ACS Appl. Energy Mater.

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High-energy-density lithium–sulfur batteries have been considered to be promising next-generation power batteries for electric vehicles (EVs). However, the common crash of batteries in EVs would lead to the formation of electrode cracks and the increase in resistance that causes critical risks of catching fire in the battery system. Herein, we develop a self-healing lithium–sulfur battery by using polymer gel-infilled microcapsules embedded in a sulfur cathode. When the electrode cracks, microcapsules break and release the gel core into the cracks, enabling the re-connection of the pathways for transferring electrons. In our study, a polymer gel precursor is encapsulated in microcapsules through a liquid-driven microfluidic approach, and then the precursor is polymerized to form a gel core inside the microcapsules. The self-healing battery exhibits a stable capacity of 825 mAh g–1 after 200 cycles. More importantly, after manually impacting the cathode with a force before battery assembly and free-falling the battery from a determined height repeatedly, the batteries maintain stable electrochemical performance compared to the ones without microcapsules, exhibiting a self-healing function that is applicable for developing emerging energy storage systems for EVs.

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Novel TPU/Fe2O3 and TPU/Fe2O3/PPy nanocomposites synthesized using electrospun nanofibers investigated for analyte sensing applications at room temperature

Cited by 30 publications

References 54 publications

GO/Bi2S3 Doped PVDF/TPU Nanofiber Membrane with Enhanced Photothermal Performance

GO/Bi2S3 Doped PVDF/TPU Nanofiber Membrane with Enhanced Photothermal Performance

CuxCo1-xFe2O4 (x = 0.33, 0.67, 1) Spinel Ferrite Nanoparticles Based Thermoplastic Polyurethane Nanocomposites with Reduced Graphene Oxide for Highly Efficient Electromagnetic Interference Shielding

A Self-Healing Lithium–Sulfur Battery Using Gel-Infilled Microcapsules

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