| 초록 |
Carbon nanotube (CNT) is widely used as a nanofiller or reinforcing material because of its excellent mechanical and electrical properties. However, since aggregation occurs due to the strong van der Waals force between CNTs, the dispersion and processing conditions must be carefully controlled. To improve the aqueous dispersion of CNTs, the surface of CNT was modified with polystyrene sulfonate (PSS), a hydrophilic polymer. In addition, aqueous P(St-BA) latex was prepared by copolymerizing butyl acrylate (BA) to endow ductility to brittle polystyrene (PS). The prepared PSS-CNTs were dispersed in P(St-BA) suspension and freeze-dried to prepare a nanocomposite material using latex technology. After preparing a nanocomposite film using hot press, the electromagnetic interference shielding effectiveness (EMI SE) was compared depending on the PSS-CNT content. |
