Mechanical Characterization of Nanocomposite Joints Based on Biomedical Grade Polyethylene under Cyclical Loads

Visco, Annamaria; Scolaro, Cristina; Quattrocchi, Antonino; Montanini, Roberto

doi:10.3390/polym12112681

Cited by 6 publications

(5 citation statements)

References 23 publications

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“…In addition, the absorption of isocyanate does not appear at 2275 cm −1 due to the complete reaction of the isocyanate with the polyol and water to form urethane and carbon dioxide bonds, respectively [ 40 ]. The peaks near the wave number of 2950 cm −1 are associated with the vibration of the functional group in the carbon chains –CH 2 -and –CH [ 39 , 42 ]. The sharp peak at the wave number 1717 cm −1 is linked to the urethane function and the carbonyl (C = O) of the functional group existing in the urethane bond [ 41 , 44 ].…”

Section: Resultsmentioning

confidence: 99%

“…The peak at 1093 cm −1 is attributed to the etheric vibration of the C-O group [ 40 , 42 ]. The peak at 1531 cm −1 is due to the C-N and N-H groups (Amides II) [ 39 ]. The average intensity signal observed around 1596 cm− 1 belongs to the aromatic vibration C = C [ 44 , 45 ].…”

Section: Resultsmentioning

confidence: 99%

“…Recently, novel methods of mixing polyurethane and carbon nanotubes have been employed [ 31 , 32 , 33 , 34 , 35 , 36 , 37 ] to increase the number of pores and improve the hydrophobic character of the sponge in order to remove oils and other non-polar organic pollutants from water [ 38 , 39 ].…”

Section: Introductionmentioning

confidence: 99%

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Development of a Hydrophobic Carbon Sponge Nanocomposite for Oil Spill Cleanup

et al. 2022

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Oil leaks (or spills) into the aquatic environment are considered a natural disaster and a severe environmental problem for the entire planet. Samples of polyurethane (PU) composites were prepared with high specific surface area carbon nanotubes (CNT) to investigate crude oil sorption. Scanning electron microscopy (SEM), Fourier-transform infrared spectroscopy (FT-IR), density measurements, and mechanical compression tests were used to characterize the polyurethane-carbon PU–CNT prepared samples. The spongy composites exhibited good mechanical behavior and a contact angle of up to 119°. The oleophilic character resulted in increased hydrophobicity, a homogeneous oil distribution inside the sponge, and a sorption capacity in a water/oil mixture of 41.82 g/g. Stress-strain curves of the prepared samples showed the good mechanical properties of the sponge, which maintained its stability after more than six sorption desorption cycles. The CNT–PU composites may prove very effective in solving oil pollution problems.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Development of a Hydrophobic Carbon Sponge Nanocomposite for Oil Spill Cleanup

et al. 2022

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“…The results showed that the proposed method should be frequently used in un-welded and welded structures because it is easy to operate, is reliable, and is safe. Visco et al [ 15 ] analyzed weld joints using static mechanical tests. The results revealed that the joints had an appreciable resistance to fatigue.…”

Section: Introductionmentioning

confidence: 99%

Fatigue Behavior of Rotary Friction Welding of Acrylonitrile Butadiene Styrene and Polycarbonate Dissimilar Materials

Kuo

Gurumurthy

Hunag³

2023

Polymers

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Understanding the fatigue behaviors of weld joints is significant in engineering practice. Rotary friction welding (RFW) can join the additively manufactured polymer components. Until now, no research has focused on the fatigue behavior of polymer components jointed via RFW. This study investigates the fatigue life of ABS/PC dissimilar components fabricated via RFW and proposes the fatigue mechanism based on the failure structure. This work uses five different cyclic loads and rotational speeds to investigate the fatigue life. The fatigue life of the RFW of ABS/PC dissimilar rods is better compared with the pure ABS and pure PC specimens due to weld and integrity microstructural changes resulting from the combination of ABS and PC materials. The number of cycles until the rupture of RFW of ABS/PC dissimilar components (y) can be determined by the cyclic load (x) according to the prediction equation of y = −838.25x2 − 2035.8x + 67,262. The fatigue life of the RFW of ABS/PC dissimilar components increase with the increased rotational speed. The number of cycles until rupture (y) can be determined by the different rotational speeds (x) according to the prediction equation of y = 315.21x2 + 2710.4x + 32,124.

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“…Furthermore, particular attention was given to the study of the fatigue behavior of the polyurethane-CNF sponges. Fatigue properties of polymers and composites still represent a timely topic, which has not been widely investigated [ 38 ]. However, in many fields of application, the response of these materials to dynamic forces allows one to obtain useful information [ 39 , 40 ].…”

Section: Introductionmentioning

confidence: 99%

Polyurethane Foams Loaded with Carbon Nanofibers for Oil Spill Recovery: Mechanical Properties under Fatigue Conditions and Selective Absorption in Oil/Water Mixtures

et al. 2021

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Marine pollution due to spillage of hydrocarbons represents a well-known current environmental problem. In order to recover the otherwise wasted oils and to prevent pollution damage, polyurethane foams are considered suitable materials for their ability to separate oils from sea-water and for their reusability. In this work we studied polyurethane foams filled with carbon nanofibers, in varying amounts, aimed at enhancing the selectivity of the material towards the oils and at improving the mechanical durability of the foam. Polyurethane-based foams were experimentally characterized by morphological, surface, and mechanical analyses (optical microscopy observation, contact angle measurement, absorption test according to ASTM F726-99 standard and compression fatigue tests according to ISO 24999 standard). Results indicated an increase in hydrophobic behavior and a good oleophilic character of the composite sponges besides an improved selective absorption of the foam toward oils in mixed water/oil media. The optimal filler amount was found to be around 1 wt% for the homogeneous distribution inside the polymeric foam. Finally, the fatigue test results showed an improvement of the mechanical properties of the foam with the growing carbon filler amount.

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Mechanical Characterization of Nanocomposite Joints Based on Biomedical Grade Polyethylene under Cyclical Loads

Cited by 6 publications

References 23 publications

Development of a Hydrophobic Carbon Sponge Nanocomposite for Oil Spill Cleanup

Development of a Hydrophobic Carbon Sponge Nanocomposite for Oil Spill Cleanup

Fatigue Behavior of Rotary Friction Welding of Acrylonitrile Butadiene Styrene and Polycarbonate Dissimilar Materials

Polyurethane Foams Loaded with Carbon Nanofibers for Oil Spill Recovery: Mechanical Properties under Fatigue Conditions and Selective Absorption in Oil/Water Mixtures

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