Wu Tao, Efimenko Kirill, Genzer Jan
Department of Chemical Engineering, North Carolina State University, Raleigh 27695-7905, USA.
J Am Chem Soc. 2002 Aug 14;124(32):9394-5. doi: 10.1021/ja027412n.
We present a method for fabricating anchored polymers with a gradual variation of grafting densities on solid substrates. The technique for generating such structures comprises (i) formation of a molecular gradient of polymerization initiator on the solid substrate and (ii) polymerization from the substrate-bound initiator centers ("grafting from"). We measure the mushroom-to-brush transition in grafted polyacrylamides and show that the mushroom and brush behavior can be described using existing scaling theories.
我们提出了一种在固体基质上制备接枝密度逐渐变化的锚定聚合物的方法。生成这种结构的技术包括：（i）在固体基质上形成聚合引发剂的分子梯度；（ii）从与基质结合的引发剂中心进行聚合（“从基质接枝”）。我们测量了接枝聚丙烯酰胺中从蘑菇状到刷状的转变，并表明蘑菇状和刷状行为可以用现有的标度理论来描述。
