Reduced platelets and bacteria adhesion on poly(ether ether ketone) by photoinduced and self-initiated graft polymerization of 2-methacryloyloxyethyl phosphorylcholine

2013 ◽  
Vol 102 (5) ◽  
pp. 1342-1349 ◽  
Author(s):  
Takaharu Tateishi ◽  
Masayuki Kyomoto ◽  
Sachiro Kakinoki ◽  
Tetsuji Yamaoka ◽  
Kazuhiko Ishihara
Keyword(s):  
Graft Polymerization ◽  
Ether Ether Ketone ◽  
Poly Ether Ether Ketone ◽  
Ether Ketone ◽  
Bacteria Adhesion

scholarly journals Smart PEEK Modified by Self-Initiated Surface Graft Polymerization for Orthopedic Bearings

2014 ◽  
Vol 4 (3) ◽  
pp. 36-45 ◽  
Author(s):  
Masayuki Kyomoto, PhD ◽  
Toru Moro, MD, PhD ◽  
Shihori Yamane, MSc ◽  
Kenichi Watanabe, BS ◽  
Yoshio Takatori, MD, PhD ◽  
...  
Keyword(s):  
Carbon Fiber ◽  
Graft Polymerization ◽  
Sliding Friction ◽  
Fluid Film ◽  
Ether Ether Ketone ◽  
Poly Ether Ether Ketone ◽  
Ether Ketone ◽  
Surface Graft ◽  
Film Lubrication ◽  
Fluid Film Lubrication

Poly(ether-ether-ketone) (PEEK)s are a group of polymeric biomaterials with excellent mechanical properties, chemical stability, and nonmagnetism. In the present study, we propose a novel self-initiated surface graft polymerization technique, using which we demonstrate the fabrication of a highly hydrophilic and biocompatible nanometer-scale layer on the surfaces of PEEK and carbon fiber-reinforced PEEK (CFR-PEEK) by the photoinduced graft polymerization of 2-methacryloyloxyethyl phosphorylcholine (MPC) without using any photoinitiators. The thus formed hydrophilic and smooth 100-nm-thick PMPC-grafted layer caused a significant reduction in the sliding friction of the bearing interface because the thin water film and hydrated PMPC layer acted as extremely efficient lubricants (so-called fluid-film lubrication or hydration lubrication). Fluid-film lubrication suppressed the direct contact of the counter-bearing surface with the PEEK substrate and thus reduced the frictional force. A PMPC-grafted layer is therefore expected to significantly increase bearing durability. Furthermore, the PMPC-grafted layer shows unique phenomena, e.g., it prevents damage of the metal counter surface regardless of the carbon fiber content of CFR-PEEK. Smart PEEK using the self-initiated surface graft polymerization of MPC should lead to development of novel orthopedic bearings.Keywords: poly(ether-ether-ketone), 2-methacryloyloxyethyl phosphorylcholine, surface modification, photopolymerization, joint replacement, wear mechanism

Crystal morphology-dependent graft polymerization in poly(ether ether ketone) films

Polymer ◽  
2013 ◽  
Vol 54 (12) ◽  
pp. 2895-2900 ◽  
Author(s):  
Shin Hasegawa ◽  
Shuichi Takahashi ◽  
Hiroki Iwase ◽  
Satoshi Koizumi ◽  
Masato Ohnuma ◽  
...  
Keyword(s):  
Graft Polymerization ◽  
Crystal Morphology ◽  
Ether Ether Ketone ◽  
Poly Ether Ether Ketone ◽  
Ether Ketone
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