TY - JOUR
T1 - Mechanical properties of glass-ceramic A-W-polyethylene composites
T2 - Effect of filler content and particle size
AU - Juhasz, J. A.
AU - Best, S. M.
AU - Brooks, R.
AU - Kawashita, M.
AU - Miyata, N.
AU - Kokubo, T.
AU - Nakamura, T.
AU - Bonfield, W.
N1 - Funding Information:
The authors thank Nippon Electric Glass Co., Japan, for supplying particulate glass-ceramic A–W. Thanks also to Dr. W McGregor and Prof. K.E. Tanner (both at the IRC in Biomedical Materials, London, England) for production of all composites. Thanks also to Dr. M. Aizawa (Sophia University, Tokyo, Japan) for assistance with FE-SEM work shown in Fig. 2 . Support from the UK EPSRC is gratefully acknowledged as is the scholarship provided by YKK (UK) Ltd. enabling J.A. Juhasz to continue research in Japan.
Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 2004/3
Y1 - 2004/3
N2 - Composites which comprise a bioactive filler and ductile polymer matrix are desirable as implant materials since both their biological and mechanical properties can be tailored for a given application. In the present study three-point bending was used to characterise biomedical materials composed of glass-ceramic apatite-wollastonite (A-W) particulate reinforced polyethylene (PE) (denoted as AWPEX). The effects of filler volume fraction, varied from 10 to 50vol%, and average particle size, 4.4 and 6.7μm, on the bending strength, yield strength, mode of fracture, Young's modulus and strain to failure were investigated. HAPEX™, a commercially used composite of hydroxyapatite and polyethylene, with a 40vol% filler content, was used for comparison. Increasing the filler content caused an increase in Young's modulus, yield strength and bending strength, and a decreased strain to failure. When filler particle size was increased, the Young's modulus, yield and bending strengths were found to be slightly reduced. A transition in fracture behaviour from ductile to brittle behaviour was observed in samples containing between 30 and 40vol% filler.
AB - Composites which comprise a bioactive filler and ductile polymer matrix are desirable as implant materials since both their biological and mechanical properties can be tailored for a given application. In the present study three-point bending was used to characterise biomedical materials composed of glass-ceramic apatite-wollastonite (A-W) particulate reinforced polyethylene (PE) (denoted as AWPEX). The effects of filler volume fraction, varied from 10 to 50vol%, and average particle size, 4.4 and 6.7μm, on the bending strength, yield strength, mode of fracture, Young's modulus and strain to failure were investigated. HAPEX™, a commercially used composite of hydroxyapatite and polyethylene, with a 40vol% filler content, was used for comparison. Increasing the filler content caused an increase in Young's modulus, yield strength and bending strength, and a decreased strain to failure. When filler particle size was increased, the Young's modulus, yield and bending strengths were found to be slightly reduced. A transition in fracture behaviour from ductile to brittle behaviour was observed in samples containing between 30 and 40vol% filler.
KW - Composite
KW - Glass-ceramic
KW - Mechanical properties
KW - Polyethylene
UR - http://www.scopus.com/inward/record.url?scp=0242438605&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0242438605&partnerID=8YFLogxK
U2 - 10.1016/j.biomaterials.2003.07.005
DO - 10.1016/j.biomaterials.2003.07.005
M3 - Article
C2 - 14615158
AN - SCOPUS:0242438605
VL - 25
SP - 949
EP - 955
JO - Biomaterials
JF - Biomaterials
SN - 0142-9612
IS - 6
ER -