pH-responsive poly(6-(acrylamido)hexanoic acid)-grafted silica particles (PAaH-SiO2) were prepared via reversible addition-fragmentation chain transfer (RAFT)-controlled radical polymerization using the chain transfer agent immobilized silica particles. Millimeter-sized ‘liquid marbles’ can be prepared using the pH-responsive PAaH-SiO2 particles. The ‘liquid marble’ can be transferred intact onto the surface of neutral or acidic water pool, which exhibited long-term stability. When pH of the water pool was changed to alkaline, ‘liquid marble’ burst immediately on the surface of the water pool.
- Masamichi Inoue
- Syuji Fujii
- Shin-ichi Yusa