화학공학소재연구정보센터
Chemistry Letters, Vol.39, No.12, 1275-1276, 2010
AFM Interaction Study of Poly(ammomum acrylate) Adsorbed on a Si Surface in Aqueous KCl Solution
Interaction force between solid surfaces in aqueous solvent was investigated using scanning probe microscopy Only short-range repulsive forces were observed in a poly(ammonium acrylate) (PAA) solution Their range increased concomitantly with Increase of the molecular weight of the PAA In a PAA solution with 0 1-1 mM KCl, the PAA adsorbed onto the Si substrate Furthermore, the interaction force was described by DLVO theory, and repulsive force is thought to originate from the steric hindrance of the PAA