Mechanical and chemical modifications of polyethylene surface by ion implantation

J. D. Liao, J. Rieu, Y. Corre, L. M. Rabbe, L. Boudoukha, S. Paletto

研究成果: Article同行評審


The hardness and the modulus of elasticity of PEs could be similarly enhanced by energy deposition of nitrogen ion implantation. With the dose of 1.4×1017, the nanohardness significantly increased 15 to 10 times and the modulus of elasticity did 7 to 5 times at the indentation depth starting from 30 to 100 nm. An important transformation from plastic to elastic behaviour was clearly observed. As a PE was ion-implanted with low dose, its outermost surface became polarizable and it was wettable with a polar liquid. The study of the joint movement also supported that the increase of wettability could spread the Ringer's solution and potentially lubricate the ball-on-cup movement; furthermore, the wear rate of the modified PE could be decreased by the formation of an elastic and hardened layer at the surface. The non-crosslinkable effect was studied by the destructive depth profile and ir-active vibration mode. The result showed that the carbonyl created at the dose higher than 1016 became rigid and stronglybonded and it was introduced to less than 10 nm of depth. The superficial N functionalities were little detected, probably they were recoiled after giving the energy to the target material or consumed by gas evolution.

頁(從 - 到)41-48
期刊Biomedical Engineering - Applications, Basis and Communications
出版狀態Published - 1994 一月 1

All Science Journal Classification (ASJC) codes

  • Biophysics
  • Bioengineering
  • Biomedical Engineering

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