The improvement of polyethylene prostheses through radiation crosslinking

Plessis, T. A. Du; Grobbelaar, C.J.; Marais, F.

doi:10.1016/0146-5724(77)90178-9

Cited by 23 publications

(13 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Oxidation processes have been specifically reviewed by Dole [14] and the reader is also referred to some more recent studies [15,16]. Information on mechanical properties of irradiated PE can be found in the review by Lyons and Weir [17] and in some later papers [18][19][20][21][22]. Thermal behaviour of cross-linked PE has been described in [23][24][25][26][27][28][29][30][31][32] and that of alkanes in [33,34].…”

Section: Introductionmentioning

confidence: 98%

Radiation effects in polyethylene and n-alkanes

Ungar

1981

J Mater Sci

138

View full text Add to dashboard Cite

The effect of high-energy radiation on n-alkanes and polyethylene (PE) are reviewed. The article includes a description of (a) primary radiation events, formation, spatial distribution and decay of free radicals and radical migration mechanisms, (b) formation of cross-lin ks and other sta ble products, (c) the effects of crystal linity, crystalline modifications and morphology on radiation cross-linking, and (d) radiation-induced changes in the crystal lattice and the destruction of crystallinity at high irradiation doses.An attempt is made to bring together conflicting views on various unsolved problems of the radiation physics and chemistry of these important and much studied substances. Long-chain paraffins are given considerable attention since their radiation behaviour often provides a link between that of PE and its short-chain analogues.

show abstract

Section: Introductionmentioning

confidence: 98%

Radiation effects in polyethylene and n-alkanes

Ungar

1981

J Mater Sci

138

View full text Add to dashboard Cite

show abstract

“…Such crosslinks strongly influence the crystallization behaviour and the resulting morphology [2]. In this connection, the distribution and number of crosslink points are of importance.…”

Section: Introductionmentioning

confidence: 99%

Crystalline and supermolecular structures in linear polyethylene irradiated with fast electrons

Gielenz

Jungnickel

1982

Colloid & Polymer Sci

View full text Add to dashboard Cite

A report is given of structural investigations on high molecular weight, highly linear polyethylene crosslinked by irradiation with fast electrons in both the molten and the solid state. For the melt-irradiated samples it could be concluded from X-ray measurements that insertion of lattice distortions of the first kind occurs on crystallization.The density of these distortions shows a distinct maximum for an irradiation dose of 25 Mrad. It is assumed, that for lower doses the material crystallizes according to a folding procedure, for higher doses according to a micellar one. For solid state irradiated samples crystalline structure and morphology are not influenced measurably by the crosslinking. The recrystallization behaviour is independent on the dose for the resulting inhomogeneous network.

show abstract

“…2 Highly cross-linked UHMWPEs have also decreased the incidence of periprosthetic osteolysis in the long-term, 3 which had been long associated with articulating surface wear particles. 4 Cross-linking of UHMWPE can be initiated by free radicals, 5 which can be introduced by various methods such as exposure to ionizing radiation 6 or the incorporation of chemical cross-linking agents such as peroxides 7,8 or silanes. 9,10 Antioxidant stabilization of radiation cross-linked UHMWPEs has been one of recent developments in materials development for total joint arthroplasty bearing surfaces.…”

mentioning

confidence: 99%

Chemically Cross‐Linked UHMWPE With Superior Toughness

Oral

Doshi

Fung

et al. 2019

Journal Orthopaedic Research

View full text Add to dashboard Cite

Radiation cross‐linked ultra‐high‐molecular‐weight polyethylenes (UHMWPEs) are clinically used extensively in total joint arthroplasty due to their high wear resistance. Peroxide cross‐linking of UHMWPE has been proposed to achieve this high level of wear resistance by simultaneously consolidating and cross‐linking in the melt state. High temperature melting of uncross‐linked and cross‐linked UHMWPEs have further shown to improve the toughness. Here, we report on the wear and mechanical properties of a peroxide cross‐linked and high‐temperature melted UHMWPE as a function of vitamin E concentration for oxidative stabilization, peroxide concentration for cross‐linking and high temperature melting temperature for toughness improvement. This method, combining consolidation and cross‐linking in one step, presents an opportunity to manufacture highly wear and oxidation‐resistant joint implant‐bearing surfaces with much improved toughness. © 2019 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 37:2182–2188, 2019

show abstract

The improvement of polyethylene prostheses through radiation crosslinking

Cited by 23 publications

References 2 publications

Radiation effects in polyethylene and n-alkanes

Radiation effects in polyethylene and n-alkanes

Crystalline and supermolecular structures in linear polyethylene irradiated with fast electrons

Chemically Cross‐Linked UHMWPE With Superior Toughness

Contact Info

Product

Resources

About