Crystallization and Melting Behavior of UHMWPE Composites Filled by Different Carbon Materials

Li, Anqi; Li, Fuzhen; Zhang, Zishou

doi:10.1155/2022/2447418

Cited by 4 publications

(4 citation statements)

References 51 publications

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“…Typically, all procedures involve the addition of nanoparticles, which primarily serve to increase strength and are also used to perform mat applications [ 39 ]. Nanosized materials, such as carbon nanotubes [ 40 , 41 ] and graphite oxide nanoplatelets [ 42 , 43 , 44 ], are used to reinforce the strength of a single nanofiber, thus strengthening the membrane, just as short fibers are added to strengthen the structures [ 45 , 46 ]. The addition of nanoparticles while fabricating electrospun nanofibers increases the mechanical properties of polymeric nanofiber mats by 35–65% [ 40 , 41 , 47 ].…”

Section: Introductionmentioning

confidence: 99%

Mechanical and Thermal Characterization of Annealed Oriented PAN Nanofibers

Sanchaniya,

Lasenko,

Kanukuntala

et al. 2023

Polymers

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Polyacrylonitrile (PAN) nanofibers have extensive applications as filters in various fields, including air and water filtration, biofluid purification, and the removal of toxic compounds and hazardous pollutants from contaminated water. This research focuses on investigating the impacts of annealing on the mechanical and thermal characteristics of oriented PAN nanofibers produced through the electrospinning of a PAN solution. The nanofiber mats were subjected to annealing temperatures ranging from 70 °C to 350 °C and characterized using a tensile test machine, thermogravimetry, differential scanning calorimetry, and scanning electron microscopy (SEM). The study aimed to examine the tensile strength in the transverse and longitudinal directions, Young’s modulus, and glass transition temperatures of PAN nanofiber mats. The results indicate that, upon annealing, the diameter of the nanofibers decreased by approximately 20%, while the tensile strength increased in the longitudinal and transverse directions by 32% and 23%, respectively. Furthermore, the annealing temperature influenced the glass transition temperature of the nanofiber mats, which exhibited a 6% decrease at 280 °C, while the degradation temperature showed a slight increase of 3.5% at 280 °C. The findings contribute to a better understanding of the effects of annealing on PAN nanofiber mats, facilitating their potential for various filtration applications.

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Section: Introductionmentioning

confidence: 99%

Mechanical and Thermal Characterization of Annealed Oriented PAN Nanofibers

Sanchaniya,

Lasenko,

Kanukuntala

et al. 2023

Polymers

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“…above 1.5 to 3wt.%. 81 Another study by Çolak.et al also shows the same trend. The results of XRD analysis show an increase in crystallinity at lower content of reduced Graphene oxide (rGO), which further shows a decline at higher wt.% of rGO filler.…”

Section: Xrd Analysismentioning

confidence: 59%

Development of reduced Graphene oxide modified Ultrahigh molecular weight polyethylene (rGO/UHMWPE) based Nanocomposites for Biomedical Applications

Singh

Verma

2022

Journal of Thermoplastic Composite Materials

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Ultrahigh molecular weight polyethylene (UHMWPE) are widely used as a biomaterial for manufacturing of prostheses, implants and other biomedical components with complex geometry and shapes. Continuous loading of these components subject to heavy stress and deformation resistance should have enhanced mechanical and chemical properties. This paper aims to improve the mechanical and thermal aspects of the conventional UHMWPE by supplementing reduced Graphene oxide (rGO) in varying weight percentages to develop polymer bio nanocomposite samples. The effect of green synthesized GO nanoparticles in the UHMWPE polymer was investigated for biomedical application. The rGO was distributed in a UHMWPE matrix using a unique and optimized technique to create high-performance nanocomposites. The proposed UHMWPE filled with different loading (0, 0.5, 1.0,1.5, 2.0, and 3.0 wt.%) of rGO was produced by Ultrasonication in an acetone medium. The findings suggest that evenly distributed rGO layers were present throughout the polymer matrix. This, in turn, indicates a good connection between the fillers and matrix by Scanning electron microscopy (SEM) and Energy Dispersive X-Ray Analysis (EDAX), resulting in better composite capabilities. The layers of rGO-aided lamellar arrangements and microfibers between the crystals were observed in the results. The Microhardness of the bio nanocomposite (1 Wt.% rGO/UHMWPE) with 1wt.% rGO in the UHMWPE matrix increased by 2.8% compared to an unfilled polymer. At the same rGO concentration, the bio nanocomposite had a crystallization degree of 46.96%. To achieve optimal performance, rGO content of 1wt.% was added to the sample, which is ideal in many situations where good mechanical and thermal qualities are required during operation. The outcomes reveal that the rGO supplement primarily boosts the thermo-mechanical performances of the modified bio-nano composites for orthopedic products.

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“…The filler‐polymer interfacial interactions facilitate nucleation, hence promoting the crystallization of the polymer at elevated temperatures 47 . Despite the positive effect of fillers in increasing the crystallinity of HMWPE, 48–51 studies show a decrease in its crystallinity at high amounts of filler 48,52 …”

Section: Resultsmentioning

confidence: 99%

“…[44][45][46] The filler-polymer interfacial interactions facilitate nucleation, hence promoting the crystallization of the polymer at elevated temperatures. 47 Despite the positive effect of fillers in increasing the crystallinity of HMWPE, [48][49][50][51] studies show a decrease in its crystallinity at high amounts of filler. 48,52 The time for penetration of gas molecules across such membranes is expected to increase considerably when the gas molecules should travel around impervious particles over more tortuous and intricate pathways (Figure 6).…”

Section: Xrd Diffractogram Of Gnp-mfe 2 Omentioning

confidence: 99%

Improving barrier properties of polyethylene/Fe₂O₃‐modified nanographene nanocomposites in a magnetic field

Nasseryan,

Ghasemi,

Abbassi‐Sourki

2024

Polymers for Advanced Techs

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The present work aims at improving the barrier properties of high molecular weight Polyethylene/ graphene nanoplatelets (HMWPE/GnP) nanocomposites by aligning the embedded modified graphene nanoparticles in a magnetic field. Graphene nanoplatelets (GnP) were modified by magnetic Fe2O3 to produce Fe2O3‐modified Graphene, GnP‐mFe2O3. The magnetic properties of Fe2O3 were previously characterized by the vibrating sample magnetometer (VSM) method and resulting GnP‐mFe2O3 nanoparticles were characterized by Fourier transform infrared (FTIR) analysis. HMWPE/GnP nanocomposites were prepared via melt mixing. The prepared nanocomposites were sheeted at high temperatures in a magnetic field using a hot press. The barrier properties of prepared films, HMWPE/GnP and HMWPE/GnP‐mFe2O3 were characterized by carrying out a permeation to oxygen experiment as a function of GnP and GnP‐mFe2O3 contents. A decrease in gas transmission rate (GTR) was observed for the samples after being subjected to the magnetic field compared to the non‐treated sample. The results of differential scanning calorimetry (DSC) and field emission electron microscopy (FESEM) experiments confirmed the orientation of GnP‐mFe2O3 nanoparticles in nanocomposites.

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Crystallization and Melting Behavior of UHMWPE Composites Filled by Different Carbon Materials

Cited by 4 publications

References 51 publications

Mechanical and Thermal Characterization of Annealed Oriented PAN Nanofibers

Mechanical and Thermal Characterization of Annealed Oriented PAN Nanofibers

Development of reduced Graphene oxide modified Ultrahigh molecular weight polyethylene (rGO/UHMWPE) based Nanocomposites for Biomedical Applications

Improving barrier properties of polyethylene/Fe₂O₃‐modified nanographene nanocomposites in a magnetic field

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Crystallization and Melting Behavior of UHMWPE Composites Filled by Different Carbon Materials

Cited by 4 publications

References 51 publications

Mechanical and Thermal Characterization of Annealed Oriented PAN Nanofibers

Mechanical and Thermal Characterization of Annealed Oriented PAN Nanofibers

Development of reduced Graphene oxide modified Ultrahigh molecular weight polyethylene (rGO/UHMWPE) based Nanocomposites for Biomedical Applications

Improving barrier properties of polyethylene/Fe2O3‐modified nanographene nanocomposites in a magnetic field

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Improving barrier properties of polyethylene/Fe₂O₃‐modified nanographene nanocomposites in a magnetic field