Semirigid Biobased Polymer Brush: Poly(α-methylene-γ-butyrolactone) Brushes.

High-density poly(α-methylene-γ-butyrolactone) (PMBL) brushes were produced by surface-initiated atom transfer radical polymerization of α-methylene-γ-butyrolactone (MBL), a biomass derived from tulips, on a silicon substrate. The relative elastic modulus was evaluated through force-curve measurements using a scanning force microscopy. The friction coefficient was measured using a macroscopic friction test.