PMID- 17397040
OWN - NLM
STAT- MEDLINE
DCOM- 20071102
LR  - 20131121
IS  - 1549-3296 (Print)
IS  - 1549-3296 (Linking)
VI  - 83
IP  - 1
DP  - 2007 Oct
TI  - Tribological investigation of novel HDPE-HAp-Al2O3 hybrid biocomposites against 
      steel under dry and simulated body fluid condition.
PG  - 191-208
AB  - Among various biocompatible polymers, polyethylene based materials have received 
      wider attention because of its excellent stability in body fluid, inertness, and 
      easy formability. Attempts have been made to improve their physical properties 
      (modulus/strength) to enable them to be used as load bearing hard tissue 
      replacement applications. Among such attempts, high density polyethylene 
      (HDPE)-hydroxyapatite (HAp) composite (HAPEX), has already been developed for 
      total hip replacement (THR) acetabular cup and low load bearing bone tissue 
      replacement. In the present work, alumina has been added as a partial replacement 
      of HAp phase to improve the mechanical and tribological properties of the HAPEX 
      composite. In an attempt to assess the suitability of the developed composite in 
      THR application, the tribological properties against steel counterbody under both 
      in air and simulated body fluid (SBF), have been investigated and efforts have 
      been made to understand the wear mechanisms. The fretting wear study indicates 
      the possibility of achieving extremely low COF (Coefficient of Friction 
      approximately 0.09) as well as higher wear resistance (order of 10(-6) mm(3)/N m) 
      with the newly developed composites in SBF. A low wear depth of approximately 
      4.6-5.3 microm is recorded, irrespective of fretting environment. The implication 
      of the work is that optimal and combined addition of bioactive and bioinert 
      ceramic filler to HDPE can provide a good opportunity to obtain hybrid 
      biocomposites with better combination of physical properties (modulus, hardness) 
      as well as low friction and high wear resistance.
FAU - Nath, Shekhar
AU  - Nath S
AD  - Department of Materials and Metallurgical Engineering, Indian Institute of 
      Technology, IIT-Kanpur, Kanpur 208016, India.
FAU - Bodhak, Subhadip
AU  - Bodhak S
FAU - Basu, Bikramjit
AU  - Basu B
LA  - eng
PT  - Journal Article
PL  - United States
TA  - J Biomed Mater Res A
JT  - Journal of biomedical materials research. Part A
JID - 101234237
RN  - 0 (Biocompatible Materials)
RN  - 12597-69-2 (Steel)
RN  - 9002-88-4 (Polyethylene)
RN  - 91D9GV0Z28 (Durapatite)
RN  - LMI26O6933 (Aluminum Oxide)
SB  - IM
MH  - Aluminum Oxide/*chemistry
MH  - Biocompatible Materials/*chemistry
MH  - *Body Fluids
MH  - *Desiccation
MH  - Durapatite/*chemistry
MH  - Friction
MH  - Microscopy, Electron, Scanning
MH  - Polyethylene/*chemistry
MH  - Pressure
MH  - *Steel
MH  - Surface Properties
EDAT- 2007/04/03 09:00
MHDA- 2007/11/06 09:00
CRDT- 2007/04/03 09:00
PHST- 2007/04/03 09:00 [pubmed]
PHST- 2007/11/06 09:00 [medline]
PHST- 2007/04/03 09:00 [entrez]
AID - 10.1002/jbm.a.31203 [doi]
PST - ppublish
SO  - J Biomed Mater Res A. 2007 Oct;83(1):191-208. doi: 10.1002/jbm.a.31203.