Results 181 to 190 of about 15,988 (210)

UHMWPE Modified Sodium Alginate

Materials Science Forum, 2015
Aim of our experiments was to modify prosthetic material UHMWPE powder using sodium alginate. The sodium alginate has an important property that the appropriate chemical reagent could exchange its Na+ions to Ca2+ions. The Ca has important role in the healing process, so modifying this substance the UHMWPE material helps patients healing.
Mariann Kollár, Gabriella Zsoldos, Tamás Szabó   +2 more
openaire   +1 more source

Nanotribological Properties of UHMWPE/Quartz Composites

Materials Science Forum, 2005
Wear of ultra-high molecular weight polyethylene (UHMWPE) and its composites is one of the main obstacles that limit the longevity of total joint replacements. Compression molded UHMWPE/quartz composites with organosiloxane as a cross-linking agent for UHMWPE matrix, were tested in nanoindentation and nanowear.
Tang, C. Y., Uskoković, Petar, Tsui, C. P., Chan, KC, Lo, SCL, Xie, XL   +5 more
openaire   +2 more sources

Processing of UHMWPE and HA/UHMWPE nanocomposite for biomedical applications

2014
Ultrahigh molecular weight polyethylene (UHMWPE) is an implant material for orthopedic implants because of its excellent mechanical properties. However, its applications were limited by the poor processability, particularly its use as matrix materials for bone-analogue.
openaire   +2 more sources

Statistical wear analysis of PA-6/UHMWPE alloy, UHMWPE and PA-6

Wear, 2001
This paper, based on an orthogonal experimental design and analysis method, reports the wear of a blend of polyamide-6/ultrahigh molecular weight polyethylene (PA-6/UHMWPE), using a pin-on-disc test, and rubbing against a stainless steel counterface. The wear behavior of PA-6 and UHMWPE was also investigated for the purpose of comparison.
Liu, C. Z., Ren, L. Q., Tong, J., Joyce, T. J., Green, S. M., Arnell, R. D.   +5 more
openaire   +2 more sources

Accelerated aging studies of UHMWPE. II. Virgin UHMWPE is not immune to oxidative degradation

Journal of Biomedical Materials Research, 2002
AbstractIn Part I of this series, we showed that aging at elevated oxygen pressure is more successful at increasing the depth to which degradation occurs although it, too, generally causes greater degradation at the surface than at the subsurface.
A A, Edidin, M L, Villarraga, M P, Herr, J, Muth, S S, Yau, S M, Kurtz   +5 more
openaire   +2 more sources

Interfacial strength between molded UHMWPE and PMMA-MMA monomer treated UHMWPE.

Journal of long-term effects of medical implants, 2000
To solve aseptic loosening of cemented acetabular cup and tibial plateaus of hips and knee joint prostheses in total joint replacement, adhesion between the polymeric prostheses made of ultra-high molecular weight polyethylene (UHMWPE) and bone cement made of polymethyl-methacrylate (PMMA) has been investigated. Previous studies using xylene, PMMA, and
K D, Park, Y H, Kang, J B, Park
openaire   +1 more source

Dispersion of Pristine Cnt in Uhmwpe Solution to Prepare Cnt/Uhmwpe Composite Fiber

Polymers and Polymer Composites, 2014
CNT dispersion in polymer matrices uniformly remains a challenge. Uniform dispersion of carbon nanotube (CNT) within ultra-high molecular polyethylene (UHMWPE) solution is the first step to achieve CNT/UHMWPE fibers with excellent properties. Several approaches have been tried.
Xiangyang Hao, An-Ting Chien, Xiaoying Hua, Jian Lu, Yaodong Liu   +4 more
openaire   +1 more source

Oxidation in Prosthetic UHMWPE

2019
In this chapter, we will consider the oxidation process involved in high-energy radiation sterilization of UHMWPE, as generally used in the field of orthopedics. The macroradicals produced during irradiation, their stability in various morphological phases, and their reactivity with chain imperfections, as well as the effect of oxygen and additives in ...
openaire   +1 more source

Repsol closes in on UHMWPE plant for making UHMWPE

Chemical & Engineering News, 2022
openaire   +1 more source

Stabilisation Of Uhmwpe With Vitamin E

2006
Ultra-high molecular weight polyethylene (UHMWPE) has been the material of choice for load-bearing articular components used in total joint arthroplasty in the past 30 years. However, the durability of the whole implant has often been compromised by oxidation of UHMWPE components.
BRACCO, Pierangiola, BRUNELLA, VALENTINA GIOVANNA, ZANETTI, Marco, LUDA DI CORTEMIGLIA, Maria Paola, COSTA, Luigi   +4 more
openaire   +2 more sources