Synthesis of Oxime Urethane-Based Covalent Adaptable Networks Via Photo-initiated Polymerization of Methyl Methacrylate
발표자
()
초록
내용
Oxime urethane bond-based covalent adaptable networks (CANs) can be dissociated reversibly in response to heat but be permanently disrupted by UV light. This feature presents a challenge for light-based application of oxime urethane-based CANs, such as UV-curing or vat photopolymerization. To overcome this, we identified a UV light wavelengths that do not damage oxime urethane bonds and synthesize oxime urethane-based CANs via photo-initiated polymerization of methyl methacrylate with a crosslinker containing oxime urethane bonds.The formation of network structure derived from oxime urethane bond was confirmed using FT-IR analysis and swelling behavior in solvent . On the other hand, the prepared oxime urethane-based CAN could be processed to homogeneous films via hot pressing, indicating the reversible dissociation of the oxime urethane bond. DMA analysis was also used to assess the detailed thermoplastic behavior of the CANs.