Effect of filler surface morphology on the impact behaviour of hydroxyapatite reinforced high density polyethylene composites

被引：0
|
作者：
Y. Zhang
K. E. Tanner
机构：
[1] Queen Mary University of London,Department of Materials
来源：
Journal of Materials Science: Materials in Medicine | 2008年 / 19卷
关键词：
Coupling Agent; HDPE; Impact Resistance; Impact Behaviour; Strong Interfacial Bonding;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Instrumented falling weight impact tests have been carried out to characterize the impact behaviour of hydroxyapatite reinforced high-density polyethylene composite (HA-HDPE) in order to use this biomaterial in skull implants. The effects of HA filler surface morphology and volume fraction on the fracture toughness were studied, and fracture mechanism investigated. Impact resistance was found to be markedly improved by using a sintered grade HA filler with smooth particle surface instead of spray dried grade HA with rough surface. SEM examination of impacted fracture surfaces revealed that the improvement of impact resistance was due to the stronger interfacial bonding between smooth HA particles and HDPE polymer matrix compared with that between rough HA and HDPE, which results in more energy absorption during impact and hence better fracture resistance.
引用
收藏
页码：761 / 766
页数：5
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