Lubrication behaviors of PVA‐casted LSPEEK hydrogels in artificial cartilage repair

Zhou, Huangjie; Xiong, Dangsheng; Wei, Tong; Shi, Zhibing; Xiong, Xiaoya

doi:10.1002/app.47944

Cited by 20 publications

(16 citation statements)

References 43 publications

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“…[ 34,35 ] Cast drying is another physical crosslinking technique that is occasionally applied combined with the freeze‐thaw method. [ 54,61,62 ] The sample is held at a certain temperature and humidity (natural air drying, hot air drying, or freeze‐drying [ 63 ] ) for a couple of days to one week until the evaporation is completed. Besides, theta gelation is also a physical crosslinking process that is not so often used.…”

Section: Physicochemical Properties Of Pva and Hydrogel Preparationmentioning

confidence: 99%

“…Zhou et al. [ 61 ] cast PVA hydrogel onto a polyether ether ketone (PEEK) base prepared by laser processing and surface sulfonation to obtain a “soft‐hard” structure (PVA‐LSPEEK); Zhao et al. [ 97 ] also used a similar “PVA‐on‐toughened‐base” structure, where PVA hydrogel is combined with a 3D‐printed titanium scaffold; Jiang et al.…”

Section: Functional Modifications Of Pva Hydrogelsmentioning

confidence: 99%

“…[ 99 ] question the prevailing fluid load support theory and put up a new hypothesis named the non‐replenished mechanism. As for lubrication modifications to PVA hydrogels, the addition of zwitterionic PMEDSAH [ 28 ] and PEEK [ 61 ] are reported to enhance the boundary lubrication property. Cast‐drying can also be combined with freeze‐thawing to prepare PVA hydrogels with a lower friction coefficient attribute to the change of drying speed.…”

Section: Functional Modifications Of Pva Hydrogelsmentioning

confidence: 99%

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PVA‐Based Hydrogels: Promising Candidates for Articular Cartilage Repair

Chen

Song

Wang

et al. 2021

Macromolecular Bioscience

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The complex, gradient physiological structure of articular cartilage is a severe hindrance of its self‐repair, leaving the clinical treatment of cartilage defects a demanding issue to be addressed. Currently applied tissue engineering treatments and traditional non‐tissue engineering treatments have different limitations, for example, cell dedifferentiation, immune rejection, and prosthesis‐related complications. Thus, studies have been focusing on seeking promising candidates for novel cartilage repair methods. Polyvinyl alcohol (PVA) hydrogels with excellent biocompatibility and tunable material properties have become the alternatives. For pure PVA hydrogels, the mechanical strength and lubricity are not capable of replacing articular cartilage until proper modifications are done. This paper summarizes the research progress in PVA hydrogels, including the preparation, modification, and cartilage‐repair‐aimed biomimetic improvements. Design guidance of PVA hydrogels is put forward as assistance to functional hydrogel preparation. Finally, the prospects and main obstacles of PVA hydrogels are discussed.

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Section: Physicochemical Properties Of Pva and Hydrogel Preparationmentioning

confidence: 99%

Section: Functional Modifications Of Pva Hydrogelsmentioning

confidence: 99%

Section: Functional Modifications Of Pva Hydrogelsmentioning

confidence: 99%

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PVA‐Based Hydrogels: Promising Candidates for Articular Cartilage Repair

Chen

Song

Wang

et al. 2021

Macromolecular Bioscience

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“…32 By combining PVA and PEEK through laser processing and surface-sulfonation methods, Zhou prepared a bilayer hydrogel that not only exhibits excellent mechanical adhesion to PEEK substrates but also has good water lubrication properties under high loads. 33 Polyethylene glycol (PEG) as a common polymer water-soluble lubricating material; in solution, the PEG molecular chain is easily stretched to form a hydrogenbond-rich network. Animal experiments have demonstrated that PEG has low toxicity and good biocompatibility, so that it is suitable for use in biomedical applications.…”

Section: Introductionmentioning

confidence: 99%

Double‐network polyvinyl alcohol composite hydrogel with self‐healing and low friction

Zhang

et al. 2021

J of Applied Polymer Sci

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Polyvinyl alcohol (PVA) hydrogel is considered the most promising candidate for artificial cartilage because of its good lubricity and low permeability. However, the efficacy of single-network PVA hydrogels under variable loads has not yet been determined. In this study, a one-step physical-cross-linking method was used to compose PVA/PEG double-network composite hydrogels. We changed the polyethylene glycol (PEG) content of the composite gel and tested the frictional-wear performance under different loads and speeds. With the mass fraction of PEG at 30 wt.%, the hardness of the PVA/PEG composite gel increased to 167.7% that of pure PVA. Under dry-friction conditions, the average coefficient of friction was approximately 0.14 and the wear rate on the surface of the hydrogel was insignificant. The cross-linking between PVA and PEG greatly enhanced the stability of the composite hydrogel polymer network. The structure of the composite gel was analyzed by a variety of standard methods. The hydrogel has excellent biocompatibility and self-healing ability and is a self-lubricating, self-healing candidate material for articular-cartilage repair.

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“…The great vibrations absorb properties combined with highly wear resistance make the polymeric materials gradually replace the traditional water‐lubricated bearing materials 6–8 . Polyetheretherketone (PEEK) is a kind of liner chain plastics with great mechanical properties, great heat stability, and high chemical resistance 9–11 . PEEK only contains of ether linkage and ketone, neither of which can react with water or metals under the working conditions of water‐lubricated bearings.…”

Section: Introductionmentioning

confidence: 99%

Insight into water lubrication performance of polyetheretherketone

Guo

Yuan

2020

J of Applied Polymer Sci

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Polyetheretherketone (PEEK) is a kind of polymer with excellent mechanical properties combined with good wear resistance and has been widely used in the engineering field. In order to explore the possibility for PEEK using as a water-lubricated bearing material, an in-depth study on the water lubrication performance of PEEK was conducted by using a series of experiments. The water lubrication performances combined with the lubricating mechanism were evaluated both by the friction coefficient and by the wear behavior of PEEK. The results indicated that PEEK was suitable for water-lubricated bearing productions. The water film could form effectively between the friction pairs under high sliding velocity, while the transfer film could form under low sliding velocity. Both the water film and the transfer film could improve the water lubrication performance for the friction pairs. Moreover, sliding velocities and contact pressures highly influence the water lubrication performance of PEEK. The increase in contact pressure or the decrease in sliding velocity would exacerbate the wear of material. The stick-slip phenomena also occurred on the specimens under low sliding velocity. The main purpose of this study is to provide an experimental basis for PEEK using as a waterlubricated bearing material.

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Lubrication behaviors of PVA‐casted LSPEEK hydrogels in artificial cartilage repair

Cited by 20 publications

References 43 publications

PVA‐Based Hydrogels: Promising Candidates for Articular Cartilage Repair

PVA‐Based Hydrogels: Promising Candidates for Articular Cartilage Repair

Double‐network polyvinyl alcohol composite hydrogel with self‐healing and low friction

Insight into water lubrication performance of polyetheretherketone

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