Smart Reactivity in Gelatine/PNIPAM Mixtures: Control of the Cross-Linking and Microheterogeneities



Chemical cross-linking of gelatine was achieved by using a thermo-sensitive reactive poly(N-isopropylacrylamide) as a cross-linker. The reaction occurs only below the LCST. Controlled micro-heterogeneities were created inside the gel without macroscopic volume transition. Acceleration of the drying process indicates faster water diffusion in the micro-heterogeneous gel.