Mechanical relaxation of medical grade UHMWPE of different crosslink density as prepared by electron beam irradiation

Göschel, U.; Ulrich, Christian

doi:10.1002/app.29852

Cited by 22 publications

(9 citation statements)

References 26 publications

(40 reference statements)

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“…x 10 -2 J m -2 is the lamellar basal surface free energy, and = 2.8 x 10 8 J m -3 is the heat fusion per unit volume [24]. were also studied for comparison purposes.…”

Section: Characterization and Testingmentioning

confidence: 99%

Thermal, Mechanical and Rheological Behaviors of Nanocomposites Based on UHMWPE/Paraffin Oil/Carbon Nanofiller Obtained by Using Different Dispersion Techniques

Visco

Yousef

Galtieri

et al. 2016

JOM

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“…x 10 -2 J m -2 is the lamellar basal surface free energy, and = 2.8 x 10 8 J m -3 is the heat fusion per unit volume [24]. were also studied for comparison purposes.…”

Section: Characterization and Testingmentioning

confidence: 99%

Thermal, Mechanical and Rheological Behaviors of Nanocomposites Based on UHMWPE/Paraffin Oil/Carbon Nanofiller Obtained by Using Different Dispersion Techniques

Visco

Yousef

Galtieri

et al. 2016

JOM

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“…Equilibrium swelling experiments27,28 were performed in o ‐xylene with 0.1 mass % Irganox 1010 (Ciba Geigy) added as an antioxidant. The samples ( w g) were kept at 130°C for 24 h and then weighed, w 2 .…”

Section: Methodsmentioning

confidence: 95%

A crosslinking method of UHMWPE irradiated by electron beam using TMPTMA as radiosensitizer

Wang

et al. 2012

J of Applied Polymer Sci

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Trimethylolpropane trimethylacrylate/Ultra high molecular weight polyethylene (TMPTMA/UHMWPE) composite and pure UHMWPE plates were made by compression molding and electron beam (EB) irradiation crosslinking methods. Fourier transform infrared spectroscopy (FTIR), Soxhlet extractor, electromechanical tester, and wear tester were used for the characterization of the structure, mechanical properties, and tribological performance of the crosslinked UHMWPE. FTIR analyses show that trans-vinylene (965 cm À1 ) absorption increases with the increasing dose and the trans-vinylene intensity of TMPTMA/UHMWPE is higher than that of UHMWPE at the same dose, and Soxhlet experiments reveal that gel fraction increases with the increasing dose, both proving that crosslinking took place in all the irradiated samples. The results of the tensile tests indicate a significant decrease in elongation at break, but the stress of UHMWPE increases to 47 MPa at 10 kGy and then decreases with the increasing dose. The stress of TMPTMA/UHMWPE composites keeps at about 39 MPa before 50 kGy and then decreases with the increasing dose because of plasticization effect. The stress changes indicate that crosslinking and degradation occurred at the same time. Wear rate of 100 kGy 1% TMPTMA/UHMWPE is 1.76 Â 10 À7 mg/Nm, only 23.5% of wear rate of 0 kGy UHMWPE and 44.2% of wear rate of 100 kGy UHMWPE.

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“…Gibbs–Thomson equation (IV) provides one of the convenient ways to calculate the lamellar thickness ( d c ) of the polymer and its composites, particularly in our case POM and CNT/POM nanocomposites

d_{c} = \frac{2 σ_{e}}{Δ h_{f}} {(1 - \frac{T_{m}}{T_{m}^{o}})}^{prefix- 1}

…”

Section: Methodsmentioning

confidence: 99%

Flexural, impact, rheological and physical characterizations of POM reinforced by carbon nanotubes and paraffin oil

Yousef

Visco

Galtieri

et al. 2016

Polymers for Advanced Techs

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The paraffin oil dispersion technique innovated in the recent years to synthesize bulk polymer nanocomposite materials has a uniform dispersion. This research work aims to study the effect of added carbon nanotubes (CNTs) on flexural, impact and rheology behaviors of polyoxymethylene (POM) reinforced by 0–0.03 wt% of CNT using paraffin oil dispersion technique. The wettability and lamellar thickness were measured and rheological performance investigated using a parallel plate rheometer. The flexural and impact mechanical properties were also evaluated. The fracture surfaces were then examined by microscopy. The results showed that the energy to break, flexural strength and modulus increased proportionally with the addition of the amount of CNT in the matrix. For the rheology behavior, the viscosity decreased at the low percentage of CNT and then increased with increase in the percentage weight ratio of CNT in the POM matrix. It was also noted that the water contact angle rose with the increase the CNT percentages. Copyright © 2016 John Wiley & Sons, Ltd.

show abstract

Mechanical relaxation of medical grade UHMWPE of different crosslink density as prepared by electron beam irradiation

Cited by 22 publications

References 26 publications

Thermal, Mechanical and Rheological Behaviors of Nanocomposites Based on UHMWPE/Paraffin Oil/Carbon Nanofiller Obtained by Using Different Dispersion Techniques

Thermal, Mechanical and Rheological Behaviors of Nanocomposites Based on UHMWPE/Paraffin Oil/Carbon Nanofiller Obtained by Using Different Dispersion Techniques

A crosslinking method of UHMWPE irradiated by electron beam using TMPTMA as radiosensitizer

Flexural, impact, rheological and physical characterizations of POM reinforced by carbon nanotubes and paraffin oil

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