Tuning the superstructure of ultrahigh-molecular-weight polyethylene/low-molecular-weight polyethylene blend for artificial joint application

ACS Applied Materials & Interfaces
Ling XuZhong-Ming Li

Abstract

An easy approach was reported to achieve high mechanical properties of ultrahigh-molecular-weight polyethylene (UHMWPE)-based polyethylene (PE) blend for artificial joint application without the sacrifice of the original excellent wear and fatigue behavior of UHMWPE. The PE blend with desirable fluidity was obtained by melt mixing UHMWPE and low molecular weight polyethylene (LMWPE), and then was processed by a modified injection molding technology-oscillatory shear injection molding (OSIM). Morphological observation of the OSIM PE blend showed LMWPE contained well-defined interlocking shish-kebab self-reinforced superstructure. Addition of a small amount of long chain polyethylene (2 wt %) to LMWPE greatly induced formation of rich shish-kebabs. The ultimate tensile strength considerably increased from 27.6 MPa for conventional compression molded UHMWPE up to 78.4 MPa for OSIM PE blend along the flow direction and up to 33.5 MPa in its transverse direction. The impact strength of OSIM PE blend was increased by 46% and 7% for OSIM PE blend in the direction parallel and vertical to the shear flow, respectively. Wear and fatigue resistance were comparable to conventional compression molded UHMWPE. The superb performance of the OS...Continue Reading

References

Apr 30, 1999·Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society·H McKellopR Salovey
Dec 11, 2002·Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society·A GomollA Bellare
May 15, 2004·Biomaterials·Ebru OralO K Orhun K Muratoglu
May 21, 2005·Physical Review Letters·Benjamin S HsiaoLei Zhu
Oct 22, 2005·Clinical Orthopaedics and Related Research·Michael D Ries, Lisa Pruitt
Oct 3, 2007·The Journal of Bone and Joint Surgery. American Volume·Stephen S TowerMichael B Mayor
Dec 4, 2008·Nuclear Instruments & Methods in Physics Research. Section B, Beam Interactions with Materials and Atoms·Ebru Oral, Orhun K Muratoglu
Jul 26, 2011·Journal of the Mechanical Behavior of Biomedical Materials·H Fouad, Rabeh Elleithy

❮ Previous
Next ❯

Citations

Nov 17, 2012·ACS Applied Materials & Interfaces·Huan XuZhong-Ming Li
Dec 20, 2013·Nanoscale·Sebastiano CataldoBruno Pignataro
Feb 28, 2014·Journal of Materials Chemistry. B, Materials for Biology and Medicine·Yan-Fei HuangZhong-Ming Li
Oct 14, 2015·Journal of Materials Chemistry. B, Materials for Biology and Medicine·Ze-Pu WangZhong-Ming Li

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.