Wear of Biopolymers under Reciprocating Sliding Conditions against Different Counterfaces

Harsha, A. P.; Wäsche, Rolf; Joyce, TJ

doi:10.1002/pen.25239

Cited by 6 publications

(5 citation statements)

References 47 publications

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“…The wear and friction studies were performed with a reciprocating sliding motion tribometer, which is described in detail elsewhere. 16,17 Figure 1(a) and (b) shows the details of the tribometer and a typical test configuration used in this study. The Ti6Al4V disc was reciprocated against a polyethylene pin in non-conformal contact under dry reciprocating sliding conditions.…”

Section: Methodsmentioning

confidence: 99%

“…The friction energy ( F E ) dissipated during one oscillating cycle with a stroke 2Δ x corresponded to the area within the friction loop hysteresis, as described in detail elsewhere. 16,17 The mean coefficient of friction (COF) ( f av ) represents the average value calculated from the data of the second half of the experiment. The test durations and tribological conditions are reported in Table 2.…”

Section: Methodsmentioning

confidence: 99%

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Friction and wear of two polyethylenes under different tribological contact conditions

Harsha

Wäsche

Joyce

2020

Polymers and Polymer Composites

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Tribological properties of ultrahigh-molecular weight polyethylene (UHMWPE) and cross-linked polyethylene (XLPE) were studied in two different wear modes. Firstly, reciprocating sliding wear studies under non-conformal contact investigated the effects of counterface surface roughness (polished, lapped and ground) of Ti6Al4V on the friction and wear of the polyethylenes. Secondly, two-body abrasive wear studies in conformal contact against different abrasive grit size papers were also carried out to ascertain the wear sensitivity of the polyethylenes under these adverse conditions. Wear mechanisms were studied using optical and scanning electron micrographs. The results of the reciprocating sliding wear studies showed that surface roughness of the counterface influenced friction and wear characteristics although no correlation was found between the coefficient of friction and specific wear rate. XLPE demonstrated wear sensitivity, particularly under severe abrasive wear condition. The results indicated that the performance of the polyethylenes greatly depends upon the tribological system under which it is operating.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Friction and wear of two polyethylenes under different tribological contact conditions

Harsha

Wäsche

Joyce

2020

Polymers and Polymer Composites

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“…According to previous studies, highly cross-linked polyethylene (HXLPE) obtained by irradiation crosslinking of UHMWPE can significantly improve its wear resistance. 6,7 The increase in cross-linking can reduce the large strain plastic deformation and orientation capacity of UHMWPE, which enhances its wear rate. Ionizing irradiation, including γ ray and electron beam (E-beam) irradiation, leads to the generation of free radicals through the cleavage of C-C and C-H bonds within amorphous and crystalline phases in UHMWPE materials.…”

Section: Introductionmentioning

confidence: 99%

“…According to previous studies, highly cross‐linked polyethylene (HXLPE) obtained by irradiation cross‐linking of UHMWPE can significantly improve its wear resistance 6,7 . The increase in cross‐linking can reduce the large strain plastic deformation and orientation capacity of UHMWPE, which enhances its wear rate.…”

Section: Introductionmentioning

confidence: 99%

Research progress on the oxidation behavior mechanism and the design of antioxidant methods of artificial polymer acetabular cup

Wang

Lin

Dong

et al. 2023

Polymer Engineering & Sci

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Ultra‐high molecular weight polyethylene (UHMWPE) was once the most widely used clinical hip prosthesis‐bearing component due to its exceptional mechanical qualities and biocompatibility. However, the poor wear resistance of UHMWPE limits its service life in vivo. Radiation cross‐linking is a common means to improve the wear resistance of UHMWPE, and highly cross‐linked polyethylene (HXLPE) acetabular cup is gradually becoming the first choice in clinical practice. The residual free radicals generated by the cross‐linking process can accelerate the oxidation process of the polymer acetabular cup, which is not conducive to the long‐term in vivo service process. Heat treatments such as annealing or melting and the addition of antioxidants are potential methods to improve the antioxidant performance of HXLPE in vivo. Research into the oxidation characteristics of polymer acetabular cup is crucial for enhancing their durability in vivo and ensuring their long‐term performance reliability. In this paper, the research progress focuses on the oxidation mechanism, the influencing factors of the oxidation process of polymer acetabular cups, and the methods to improve their oxidation resistance. It discusses the reliability of improving the service life of UHMWPE acetabular cup in vivo and other alternative methods.Highlights Characteristics of polymer acetabular cups were systematically introduced. Mechanism of oxidative behavior of acetabular cup in vivo/in vitro was analyzed. Influencing factors of acetabular cup oxidation behavior were summarized. Methods for improving antioxidant properties of acetabular cups were summarized. New method was proposed to improve the antioxidant properties of acetabular cup.

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“…[ 4 ] Some studies have shown that polyether ether ketone (PEEK) has much higher wear resistance than UHMWPE. [ 5‐7 ] Thus, PEEK as an alternative material has become a new focus. PEEK is a biopolymer material with excellent biocompatibility, mechanical properties, and wear resistance, which has been successfully applied in spine repair surgery, and also shows a great potential in TJA treatment.…”

Section: Introductionmentioning

confidence: 99%

Fatigue crack propagation behavior of polyether ether ketone under biaxial loading

Meng

Liu

et al. 2021

Polymer Engineering & Sci

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Polyether ether ketone (PEEK) has become a promising material in total joint replacement. However, it still faces the risk of fatigue fracture during service. In this paper, the effects of biaxial stress ratio λ, cyclic stress ratio R, and load phase difference θ on fatigue crack propagation (FCG) behavior of PEEK are investigated. In the case of vertical cracks, results show that the FCG rate of PEEK increases with the R value, while decreases with the increase of λ value. Furthermore, the effective stress intensity factor range ΔKeff can uniformly describe the biaxial FCG behavior at different cyclic stress ratios. In the case of 45° slant cracks, compared with mode‐I intensity factor range ΔKI, the energy release rate range ΔG is more accurate for describing the FCG behavior under various load phase differences. In addition, the investigation on the 45° crack propagation path shows that a bifurcated Y‐shaped crack appears under 180° load phase difference, while no bifurcated crack appears under 90° load phase difference and uniaxial loading. Three different methods are used to predict the crack propagation path. The comparison results show that the maximum circumferential stress (MTS) criterion can well predict the crack propagation path under out‐of‐phase biaxial loading and uniaxial loading.

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Wear of Biopolymers under Reciprocating Sliding Conditions against Different Counterfaces

Cited by 6 publications

References 47 publications

Friction and wear of two polyethylenes under different tribological contact conditions

Friction and wear of two polyethylenes under different tribological contact conditions

Research progress on the oxidation behavior mechanism and the design of antioxidant methods of artificial polymer acetabular cup

Fatigue crack propagation behavior of polyether ether ketone under biaxial loading

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