EUROPEAN CONGRESS AND EXHIBITION ON ADVANCED MATERIALS AND PROCESSES - EUROMAT 2021

Recently, bottle-brush polymers are widely used for the studies of hydration lubrication due to their unique mechanical and rheological properties, which can be controlled by varying the backbone, the length of the side chain, and the number of branches per molecule or the grafting density. Furthermore, the lubricating layer is applied for anti-icing surfaces which can ice moving more smoothly. By mimicking lubricin, we synthesized bottle-brush polymers using two polymerization methods: ring opening metathesis polymerization (ROMP) and reversible addition fragmentation chain transfer (RAFT) polymerization. To do so, norbornene and chain transfer agent (CTA) containing monomers (cationic, anionic, or zwitterionic) were used for ROMP and RAFT, respectively. The reactions were carried out by tuning Grubb’s catalyst generation, the concentration of Grubb’s catalyst, the amount of initiator, and solvents. The molecular weight of the synthesized polymer was measured by a gel permeation chromatography (GPC) and calculated percent conversion using NMR. The lubricating properties of the synthesized brush polymers affected by bottle-brush architecture and hydrate state were examined by a ball on disk. We can complex bottle-brush polymer with electrospinning nanofiber on the surfaces and measuring the anti-icing properties by ice adhesion force.