Impact of gamma radiation and multi-walled carbon nanotubes on the mechanical and acoustical properties of reinforced sisal fiber/polyester resin composites

Abdel‐Hakim, A.; Awad, Eman H.; El‐Nemr, Khaled F.; El-Basheer, Tarek M.

doi:10.1016/j.radphyschem.2021.109768

Cited by 18 publications

(17 citation statements)

References 51 publications

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“…The Scherrer formula has been used to determine the average crystal size ( L ) as follows 50 :

L = kλ / β cosθ

where k is the shape ratio = 0.9, β is the FWHM of the peak (in radian). The increase in crystallite size of all composites after irradiation is attributed to polymer crosslinking resulting from the generation of free radicals that tend to crosslink with other polymer chains 49,51 . All calculated parameters including 2θ, FWHM, and L are revealed in Table 2.…”

Section: Resultsmentioning

confidence: 99%

“…Due to the synergistic effect of GO loading and irradiation, it was observed that above 49°C the loss modulus of the 100 kGy‐irradiated HFC‐1G composite was significantly higher than that of the other composites. This is due to the fact that the cross‐linking that occurs after irradiation decreases the segmental mobility of the polymer, causing the composite stiffer exhibiting better energy dissipation and better mechanical properties 49,64 . To substantiate the impact of filler incorporation and radiation on the extent of crosslinking and, consequently, the mechanical properties of the nanocomposite, the crosslink density was assessed via elasticity theory utilizing the following equation 65,66 :

υ = {normalE}^{'} / (3RT)

…”

Section: Resultsmentioning

confidence: 99%

“…All calculated parameters including are given in Table 2. The HDPE peak intensity and full width at half maximum (FWHM) are reduced after irradiation, especially for HFC and HFC‐0.25G due to the reactivity and response of composite components to irradiation 49 …”

Section: Resultsmentioning

confidence: 99%

“…The HDPE peak intensity and full width at half maximum (FWHM) are reduced after irradiation, especially for HFC and HFC-0.25G due to the reactivity and response of composite components to irradiation. 49 The Scherrer formula has been used to determine the average crystal size (L) as follows 50 :…”

Section: Water Absorptionmentioning

confidence: 99%

“…The increase in crystallite size of all composites after irradiation is attributed to polymer crosslinking resulting from the generation of free radicals that tend to crosslink with other polymer chains. 49,51 All calculated parameters including 2θ, FWHM, and L are revealed in Table 2. on the tensile strength of different composites.…”

Section: X-ray Diffractionmentioning

confidence: 99%

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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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“…The Scherrer formula has been used to determine the average crystal size ( L ) as follows 50 :

L = kλ / β cosθ

Section: Resultsmentioning

confidence: 99%

υ = {normalE}^{'} / (3RT)

…”

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Water Absorptionmentioning

confidence: 99%

Section: X-ray Diffractionmentioning

confidence: 99%

See 3 more Smart Citations

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

View full text Add to dashboard Cite

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Nonwoven fabrics developed from agriculture and industrial waste for acoustic and thermal applications

et al. 2023

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Numerous researchers in the field of noise control and acoustics have found success in using biomaterials to create a porous sound absorber that is both effective and environmentally friendly. This paper discusses the utilization of fibers extracted from the waste from coffee husk (CH) and waste from the cotton (CO) spinning industry to be an alternative to synthetic-based acoustic materials. The study was conducted within the range of 50–6300 (Hz) frequency. Five well-known mathematical prediction models, namely Delany–Bazley (D–B), Garai–Pompoli (G–P), Miki, Allard Champoux (AC), and Johnson–Champoux–Allard (JCA) models are theoretically used to predict the sound absorption coefficient of nonwoven fibrous materials. When compared with the experimental data, it was discovered that the JCA and AC model is the most acceptable model for predicting the absorption behavior of CH/CO nonwoven fibrous materials. Additionally, the thermal insulation of nonwoven fibrous materials has been experimentally and numerically studied. It is noteworthy that, when compared to the Herman model, the Bhattacharyya model’s results showed slightly greater thermal conductivities. Overall, this work used an environmentally friendly way to turn waste into a valuable product.

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Fabrication, characterization, and application of the water hyacinth biochar-polyvinyl alcohol composite as an advantageous sound absorber material

2023

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The research was aiming to investigate the potency of water hyacinth (WH) biochar as the most advantageous sound absorber composite when it was blended with polyvinyl alcohol (PVA). It was the first time using WH biochar-based composite as a sound absorber material. Analysis and characterization of the produced WH biochar were essentially performed using N2 absorption–desorption, FTIR spectrophotometer, and SEM methods. While the capability of the sound absorber material was technically conducted using a polyvinyl chloride (PVC) impedance tube of about 95 cm in length with internal and outer diameters of about 9.5 cm and 9.8 cm respectively. The materials that would be tested for their capability of sound absorber were prepared in a disk-like form with about 9.5 cm in diameter and 0.5 cm in thickness. The sound source was continuously turned on for 2 min and transmitted wirelessly through the impedance tube, and the decreasing intensity of the sound was recorded every 5 s. The results showed that the sound absorption coefficient (SAC) of the WH biochar-PVA composite was about 6.50% (0.0650) up to 21.03% (0.2103), while the SAC of the Styrofoam was just about 4.37% (0.0437). This research concluded that the WH biochar produced by the thermal energy of 500 °C indicated it could be the best sound absorber composite when it was blended with PVA, especially for a low frequency of about 440 Hz.

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Impact of gamma radiation and multi-walled carbon nanotubes on the mechanical and acoustical properties of reinforced sisal fiber/polyester resin composites

Cited by 18 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

Nonwoven fabrics developed from agriculture and industrial waste for acoustic and thermal applications

Fabrication, characterization, and application of the water hyacinth biochar-polyvinyl alcohol composite as an advantageous sound absorber material

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