| 초록 |
Polymer brushes are surface-anchored polymer chains, which has been widely utilized for controlling surface properties and functionalities, such as surface energy, wettablilty and surface activity. Since the properties of polymer brushes are mainly governed by grafting density, it is of importance to find a effective route to control it. Here, to control the density of brushes, we demonstrate the use of a crosslinkable random copolymer, compositionally varied poly(styrene-r-glycidyl methacrylate) (P(S-r-GMA)), which can be further functionalized with a molecule having initiator group upon crosslinking process. We found that poly(methyl methacrylate) brushes were successfully grown from functionalizaed surfaces via atom transfer radical polymerization (ATRP). Two parameters largely affected the grafting density: initiator functionalization conditions and the amount of GMA in copolymers. As a result, the grafting density was controlled in range of 0.1-0.6 chains/nm2. |
