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제목   [15.12월] [ACS NANO] 황동수 교수 연구실 Mussel-Inspired Anchoring of Polymer Loops That Provide Superior Surface Lubrication and Antifouling Properties   이름  관리자
날짜  2016-02-04 13:10:41 조회  1137 추천  0
첨부   acsnano%2E5b06066.pdf(2862.52KB)
nn5b06066_si_001.pdf(778.46KB)


We describe robustly anchored triblock copolymers that adopt loop conformations on surfaces and endow them with unprecedented lubricating and antifouling properties. The triblocks have two end blocks with catecholanchoring groups and a looping poly(ethylene oxide) (PEO) midblock. The loops mediate strong steric repulsion between two mica surfaces. When sheared at constant speeds of 2.5 μm/s, the surfaces exhibit an extremely low friction coefficient of 0.0020.004 without any signs of damage up to pressures of 23 MPa that are close to most biological bearing systems. Moreover, the polymer loops enhance inhibition of cell adhesion and proliferation compared to polymers in the random coil or brush conformations. These results demonstrate that strongly anchored polymer loops are effective for high lubrication and low cell adhesion and represent a promising candidate for the development of specialized highperformance biomedical coatings.

 

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