Wan Fei, Ye Qian, Yu Bo, Pei Xiaowei, Zhou Feng
State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China.
J Mater Chem B. 2013 Aug 7;1(29):3599-3606. doi: 10.1039/c3tb20545b. Epub 2013 Jun 17.
Natural fur with a high density of soft hair fibers was selected as a model hairy surface to study the interaction of microalgae/zoospores with this biomimetic surface covered with "hairs". The synergistic antifouling (AF)/fouling-release (FR) effect of the hair fibers and the surface chemical composition after grafting polymer brushes onto the hair fibers using surface-initiated atom transfer radical polymerization (SI-ATRP) was also explored. A series of laboratory static and dynamic settlement assays with microalgae and zoospores were carried out to systematically investigate the relationship between the modified poly-sulfopropyl methacrylate (PSPMA) brushes, the density/shape/length of the hair fibers and the AF/FR properties. The results indicate that the polymer brush-modified hairy surface can be effective against the settlement of microalgae/zoospores in different bioassays, especially in dynamic settlement assays. In general, hairy surfaces of higher hair fiber density, and with longer fibers, tend to display lower settlement of microalgae/zoospores, and the surface modification of the hair fibers with PSPMA brushes can strongly improve their AF/FR properties.
选择具有高密度柔软毛发纤维的天然毛皮作为模型毛发表面，以研究微藻/游动孢子与这种覆盖有“毛发”的仿生表面之间的相互作用。还探讨了使用表面引发的原子转移自由基聚合（SI-ATRP）在毛发纤维上接枝聚合物刷后，毛发纤维与表面化学成分的协同防污（AF）/污损释放（FR）效果。进行了一系列针对微藻和游动孢子的实验室静态和动态沉降试验，以系统地研究改性聚甲基丙烯酸磺丙酯（PSPMA）刷、毛发纤维的密度/形状/长度与AF/FR性能之间的关系。结果表明，聚合物刷改性的毛发表面在不同的生物试验中对微藻/游动孢子的沉降有效，尤其是在动态沉降试验中。一般来说，毛发纤维密度较高且纤维较长的毛发表面往往显示出较低的微藻/游动孢子沉降率，并且用PSPMA刷对毛发纤维进行表面改性可以显著提高其AF/FR性能。
