Mechanical and tribological properties of poly(hydroxyethyl methacrylate) hydrogels as articular cartilage substitutes

Bostan, Luciana; Trunfio-Sfarghiu, Ana-Maria; Vereştiuc, Liliana; Popa, Marcel; Munteanu, Fl; Rieu, Jean-Paul; Berthier, Yves

doi:10.1016/j.triboint.2011.06.035

Cited by 39 publications

(31 citation statements)

References 15 publications

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“…Hydrogels are porous materials with a three-dimensional network structure. Hydrogels have similar properties as articular cartilage including compliance, hydrophilicity, and swelling capacity [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

The Effects of Surface Mechanical Deformation and Bovine Serum Albumin on the Tribological Properties of Polyvinyl Alcohol Hydrogel as an Artificial Cartilage

Feng

Zhang

Wang

et al. 2017

Advances in Materials Science and Engineering

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e mechanical and tribological properties of polyvinyl alcohol hydrogel as an arti cial cartilage were studied under water and bovine serum albumin-lubricated sliding conditions. e frictional properties of the polyvinyl alcohol hydrogel were investigated via reciprocating frictional tests. e e ect of surface mechanical deformation on the tribological properties of the polyvinyl alcohol hydrogel as an arti cial cartilage was studied by concurrently recording the z-axis displacement and friction coe cient time. ree di erent factors were chosen including load, speed, and lubrication. e results showed that the albumin solution could reverse the trend in the coe cient of friction in tests at di erent loading levels. ere was no improvement in the friction condition in albumin at low speeds. However, when the speed was increased to 2 Hz, the coe cient of friction was signi cantly reduced. Wear testing was also conducted, and wear tracks were found on the sample surface. e results also showed that even though the surface deformation could recover as the water phase of the porous structure recovered, the coe cient of friction continued to increase simultaneously. is relationship between mechanical and frictional tests indicated that biphasic lubrication e ects may not be the only dominant factor underlying the excellent friction properties of polyvinyl alcohol hydrogel.

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Section: Introductionmentioning

confidence: 99%

The Effects of Surface Mechanical Deformation and Bovine Serum Albumin on the Tribological Properties of Polyvinyl Alcohol Hydrogel as an Artificial Cartilage

Feng

Zhang

Wang

et al. 2017

Advances in Materials Science and Engineering

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“…The water content was determined by a qualitative and quantitative point of view by swelling measurements and Differential Scanning Calorimetry. Water uptake: a known amount of hydrogel (5 mg) was positioned on a cell-culture strainer and immersed, in a thermostatic bath at 37 C, in different medium: a: NaCl 0.9%; b: PBS (pH 7.4) and c: poly(ethylene glycol) (PEG) solution. The weight of the sample was monitored until it reached the swelling equilibrium and the water uptake (WU) determined using the formula (1):…”

Section: Physical Characterisationmentioning

confidence: 99%

“…[37] The mechanical properties of PVA11p were studied by analysing the storage (G') and the loss (G") moduli as a function of frequency.…”

Section: Rheological Analysismentioning

confidence: 99%

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States of water, surface and rheological characterisation of a new biohydrogel as articular cartilage substitute

Leone

Bidini²,

Lamponi

et al. 2013

Polymers for Advanced Techs

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PVA based hydrogel was synthesised using, as crosslinking agent, trisodium trimetaphosphate (STMP) and its morphology was modified inducing a microporous structure to obtain potential substitutes for cartilage tissue. The hydrogel was characterised by Infrared Spectroscopy combined with Time of flight mass spectrometry (ToF-SIMS) that confirmed the successful occurrence of crosslinking reaction, the hyphotised crosslinking arm and its homogeneous distribution. The mechanical spectra of the fully hydrated samples confirmed covalently crosslinked systems with a rheological behaviour similar to that of tibial cartilage. Further analysis in terms of water content measurements, thermal stability and cytotoxicity confirmed the applicability of such a hydrogel as cartilage substitute

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“…16,17 This allows the thermodynamic and physical property state to be controlled in situ through the imposition of external conditions. The MG have found use in medical applications as potential cartilage replacement 18 and as friction and antiwear modifiers. 19,20 Dispersions of MG exhibit the characteristics of colloids in general, such as an increase of viscosity with volume fraction, progressing eventually at sufficiently high densities to a jammed or glassy nonequilibrium state with non-zero shear modulus and a yield stress required to initiate flow.…”

Section: Introductionmentioning

confidence: 99%

Spatially dependent diffusion coefficient as a model for pH sensitive microgel particles in microchannels

2016

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Solute transport and intermixing in microfluidic devices is strongly dependent on diffusional processes. Brownian Dynamics simulations of pressure-driven flow of model microgel particles in microchannels have been carried out to explore these processes and the factors that influence them. The effects of a pH-field that induces a spatial dependence of particle size and consequently the self-diffusion coefficient and system thermodynamic state were focused on. Simulations were carried out in 1D to represent some of the cross flow dependencies, and in 2D and 3D to include the effects of flow and particle concentration, with typical stripe-like diffusion coefficient spatial variations. In 1D, the mean square displacement and particle displacement probability distribution function agreed well with an analytically solvable model consisting of infinitely repulsive walls and a discontinuous pHprofile in the middle of the channel. Skew category Brownian motion and nonGaussian dynamics were observed, which follows from correlations of step lengths in the system, and can be considered to be an example of so-called "diffusing diffusivity." In Poiseuille flow simulations, the particles accumulated in regions of larger diffusivity and the largest particle concentration throughput was found when this region was in the middle of the channel. The trends in the calculated cross-channel diffusional behavior were found to be very similar in 2D and 3D. Published by AIP Publishing. [http://dx

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Mechanical and tribological properties of poly(hydroxyethyl methacrylate) hydrogels as articular cartilage substitutes

Cited by 39 publications

References 15 publications

The Effects of Surface Mechanical Deformation and Bovine Serum Albumin on the Tribological Properties of Polyvinyl Alcohol Hydrogel as an Artificial Cartilage

The Effects of Surface Mechanical Deformation and Bovine Serum Albumin on the Tribological Properties of Polyvinyl Alcohol Hydrogel as an Artificial Cartilage

States of water, surface and rheological characterisation of a new biohydrogel as articular cartilage substitute

Spatially dependent diffusion coefficient as a model for pH sensitive microgel particles in microchannels

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