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 |
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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 |
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Country | Japan |
City | Nagoya |
Period | 5/24/06 → 5/26/06 |
All Science Journal Classification (ASJC) codes
- Engineering(all)