Abstract
High-density polymer brush on silicon wafer was prepared by surface-initiated atom transfer radical polymerization ('grafting-from' method) of 2-methacryloyloxyethyl phosphorylcholine (MPC) using CuBr / 2,2'-bipyridyl complex in methanol at 300 K. Low-density poly(MPC) brush was prepared by 'grafting-to' method using an poly(MPC) end-functionalized with alkoxysilyl group. The surface of both poly(MPC) brush was very hydrophilic; water contact angle was below 5 degree. Dynamic friction tests were carried out by sliding a glass ball (φ = 10 mm) on the surface at a sliding velocity of 90 mm/min under loading of 0.49 N at 298 K. Friction coefficient of high-density poly(MPC) brush was much lower than that of low-density one in aqueous condition. In addition, great wear resistance was observed in a high-density polymer brush. These results indicate that high-density and super-hydrophilic polymer can act as efficient lubricant to reduce the friction coefficient.
| Original language | English |
|---|---|
| Title of host publication | Polymer Preprints, Japan - 55th SPSJ Annual Meeting |
| Pages | 1222 |
| Number of pages | 1 |
| Volume | 55 |
| Edition | 1 |
| Publication status | Published - 2006 |
| Event | 55th SPSJ Annual Meeting - Nagoya, Japan Duration: May 24 2006 → May 26 2006 |
Other
| Other | 55th SPSJ Annual Meeting |
|---|---|
| Country | Japan |
| City | Nagoya |
| Period | 5/24/06 → 5/26/06 |
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All Science Journal Classification (ASJC) codes
- Engineering(all)
Cite this
Effect of grafting density of poly(2-methacryloyloxyethyl phosphorylcholine) brush on the tribological properties. / Kobayashi, Motoyasu; Zhe, Wang; Ishihara, Kazuhiko; Takahara, Atsushi.
Polymer Preprints, Japan - 55th SPSJ Annual Meeting. Vol. 55 1. ed. 2006. p. 1222.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Effect of grafting density of poly(2-methacryloyloxyethyl phosphorylcholine) brush on the tribological properties
AU - Kobayashi, Motoyasu
AU - Zhe, Wang
AU - Ishihara, Kazuhiko
AU - Takahara, Atsushi
PY - 2006
Y1 - 2006
N2 - High-density polymer brush on silicon wafer was prepared by surface-initiated atom transfer radical polymerization ('grafting-from' method) of 2-methacryloyloxyethyl phosphorylcholine (MPC) using CuBr / 2,2'-bipyridyl complex in methanol at 300 K. Low-density poly(MPC) brush was prepared by 'grafting-to' method using an poly(MPC) end-functionalized with alkoxysilyl group. The surface of both poly(MPC) brush was very hydrophilic; water contact angle was below 5 degree. Dynamic friction tests were carried out by sliding a glass ball (φ = 10 mm) on the surface at a sliding velocity of 90 mm/min under loading of 0.49 N at 298 K. Friction coefficient of high-density poly(MPC) brush was much lower than that of low-density one in aqueous condition. In addition, great wear resistance was observed in a high-density polymer brush. These results indicate that high-density and super-hydrophilic polymer can act as efficient lubricant to reduce the friction coefficient.
AB - High-density polymer brush on silicon wafer was prepared by surface-initiated atom transfer radical polymerization ('grafting-from' method) of 2-methacryloyloxyethyl phosphorylcholine (MPC) using CuBr / 2,2'-bipyridyl complex in methanol at 300 K. Low-density poly(MPC) brush was prepared by 'grafting-to' method using an poly(MPC) end-functionalized with alkoxysilyl group. The surface of both poly(MPC) brush was very hydrophilic; water contact angle was below 5 degree. Dynamic friction tests were carried out by sliding a glass ball (φ = 10 mm) on the surface at a sliding velocity of 90 mm/min under loading of 0.49 N at 298 K. Friction coefficient of high-density poly(MPC) brush was much lower than that of low-density one in aqueous condition. In addition, great wear resistance was observed in a high-density polymer brush. These results indicate that high-density and super-hydrophilic polymer can act as efficient lubricant to reduce the friction coefficient.
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UR - http://www.scopus.com/inward/citedby.url?scp=33749669807&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:33749669807
VL - 55
SP - 1222
BT - Polymer Preprints, Japan - 55th SPSJ Annual Meeting
ER -