Nitrogen plasma effect on the structural, thermal, and dynamic mechanical properties of PVA/starch/graphene oxide nanocomposite

Atta, M. M.; Taha, Eman O.; Abdelreheem, Ahmed

doi:10.1007/s00339-021-04671-x

Cited by 31 publications

(25 citation statements)

References 51 publications

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“…Figure 5A,B shows how temperature affects the storage and loss modulus, at a frequency of 1 Hz, for unirradiated HF, HFC, and HFC‐1G composites after irradiation at 100 kGy EB. In all composites, the storage modulus decreases with increasing temperature, combined with matrix softening at higher temperatures, which is lower with filler addition and irradiation 59,60 . The storage modulus of HDBE/BF composite is increased by 1.33% by CB incorporation and 7.32% after GO incorporation as indicated in Figure 5A.…”

Section: Resultsmentioning

confidence: 89%

“…In all composites, the storage modulus decreases with increasing temperature, combined with matrix softening at higher temperatures, which is lower with filler addition and irradiation. 59,60 The storage modulus of HDBE/BF composite is increased by 1.33% by CB incorporation and 7.32% after GO incorporation as indicated in Figure 5A. This behavior is attributed to the stiffening effect that reduces polymeric chain movement.…”

Section: Dynamic Mechanical Analysismentioning

confidence: 90%

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Effect of nanographene oxide and ionizing radiation on mechanical, physical, and thermal properties of composites based on high‐density polyethylene and waste bagasse fibers

Awad,

Abdel‐Hakim,

Atta

et al. 2023

Polymer Composites

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The impact of graphene oxide (GO) nanoparticle content and exposure to electron beam (EB) on the tensile, dynamic mechanical, water uptake, and thermal properties of high‐density polyethylene/bagasse fibers composite was investigated. The GO was added at different loading levels: 0.25, 0.5, 0.75, and 1 parts per hundred parts of plastic (php), while 2 doses of EB were used (100 and 200 kGy). The influence of adding 10 php of carbon black (CB) to the HDPE/BF was also investigated. The addition of GO and irradiation up to 100 kGy, along with the inclusion of 10 php of CB, led to improvements in tensile strength, elastic modulus, storage modulus, and hardness. The composite containing 1 php of GO and exposed to 100 kGy, demonstrated the highest tensile strength value, with a 47.3% improvement compared with the unirradiated one. This composite also, exhibited the lowest values of water absorption percent (3.7%) and diffusion coefficient (0.007 mm2/h) compared with the unirradiated HDPE/BF composite. These results suggest that the resulting composite has potential for use in advanced industrial applications due to its improved physicomechanical properties.Highlights Composites based on high‐density polyethylene (HDPE) and bagasse fibers (BF) were fabricated The incorporation of graphene oxide (GO) improved the mechanical properties. GO and electron beam (EB) irradiation enhanced the water resistance of HDPE/BF composite. Both GO and EB increased the thermal stability of HDPE/BF composite.

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Section: Resultsmentioning

confidence: 89%

Section: Dynamic Mechanical Analysismentioning

confidence: 90%

Effect of nanographene oxide and ionizing radiation on mechanical, physical, and thermal properties of composites based on high‐density polyethylene and waste bagasse fibers

Awad,

Abdel‐Hakim,

Atta

et al. 2023

Polymer Composites

Self Cite

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“…[ 38 ] Thus, the two form a mutually bounded region, which are not favorable for the composite films to crystallize. [ 39,40 ] This also reflects the good dispersion of GO in PVA and the good compatibility between them, which allow a new system with better properties.…”

Section: Resultsmentioning

confidence: 96%

Bend‐Resistant and Energy‐Friendly GO‐PVA/PVA Polymer Electret Synaptic Transistors for Neuromorphic Computations

Fu,

Liang,

Shuai

et al. 2023

Adv Funct Materials

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Polymer electret synaptic transistor is a promising three‐terminal artificial synaptic device. In this work, the electrical characteristics of the composite insulator and transistor are enhanced by modulating the concentration of the 2D nanofiller graphene oxide (GO) and the stacked film structure based on a polyvinyl alcohol (PVA) matrix. The GO‐PVA/PVA polymer electret synaptic transistors before and after dynamic/static bending exhibit typical synaptic characteristics, including short‐term plasticity, long‐term plasticity, pair‐pulse facilitation, spike‐timing‐dependent plasticity, and “learning–forgetting–relearning” features. Importantly, the device exhibits good cycling stability, uniformity and linearity in the potentiation‐depression cycling test, which is beneficial for improving the accuracy of neuromorphic computations. Also, it shows extremely low energy consumption (≈0.32 fJ). The recognition accuracy of images is simulated based on the constructed artificial neural network, which achieves 86.8% for the MNIST dataset. In addition, the devices maintain high recognition accuracy after dynamic/static bending, indicating that the devices are extremely bend‐resistant. The GO‐PVA/PVA polymer electret synaptic transistor is expected to be a potential candidate for neuromorphic computations and electronic skin.

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“…A decrease in the crystallinity of PVA/NaAlg was also indicated by a reduction in the intensity of the 1148 cm −1 band. [ 31 ] Reduction in the intensities of the bands at 1332 and 1412 cm −1 , showing decoupling between OH and CH vibrations, were confirmed by the weak contact between ZnO/Fe 3 O 4 and PVA/NaAlg [ 32 ] (Scheme 1). The presence of most transmittance band of PVA and NaAlg in the polymer blend curve will confirms the miscibility and compatibility between two pure polymers.…”

Section: Resultsmentioning

confidence: 99%

Synthesis and characterization of sodium alginate/polyvinyl alcohol/zinc oxide/iron oxide nanocomposites for electrochemical applications

et al. 2022

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Polymer nanocomposites films, based on sodium alginate (NaAlg) and polyvinyl alcohol (PVA) complexed with zinc oxide nanoparticles (ZnO NPs) and iron oxide nanorods (Fe 3 O 4 NRs) as nanofiller, were prepared by solution casting technique. Different techniques were used to describe the prepared films.XRD and FTIR were used to pinpoint the complexation of the nanofiller with the polymer mixture. The XRD investigation verified the existence of the crystalline peaks of ZnO/Fe 3 O 4 NPs in the polymeric matrices. The average particle size of nanocomposite was 23 nm. TEM image of the ZnO nanopowder confirming the spherical form of nanoparticles with average size 30 nm. The

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Nitrogen plasma effect on the structural, thermal, and dynamic mechanical properties of PVA/starch/graphene oxide nanocomposite

Cited by 31 publications

References 51 publications

Effect of nanographene oxide and ionizing radiation on mechanical, physical, and thermal properties of composites based on high‐density polyethylene and waste bagasse fibers

Effect of nanographene oxide and ionizing radiation on mechanical, physical, and thermal properties of composites based on high‐density polyethylene and waste bagasse fibers

Bend‐Resistant and Energy‐Friendly GO‐PVA/PVA Polymer Electret Synaptic Transistors for Neuromorphic Computations

Synthesis and characterization of sodium alginate/polyvinyl alcohol/zinc oxide/iron oxide nanocomposites for electrochemical applications

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