期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 61, 期 11, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202114111
关键词
3D printing; Photopolymerization; RAFT polymerization; Self-healing; Thermosetting materials
资金
- Australian Research Council
- UNSW Australia [DP210100094]
In this study, RAFT agents were incorporated into resin formulations to allow for visible light-mediated 3D printing of materials with self-healing capabilities. The self-healing process is based on the reactivation of RAFT agent embedded in the thermosets under UV light, enabling reformation of the polymeric network. Resins containing RAFT agents enable 3D printing of thermosets with self-healing properties, expanding the potential applications in various fields.
Vat photopolymerization-based 3D printing techniques have been widely used to produce high-resolution 3D thermosetting materials. However, the lack of repairability of these thermosets leads to the production of waste. In this study, reversible addition fragmentation chain transfer (RAFT) agents are incorporated into resin formulations to allow visible light (405 nm) mediated 3D printing of materials with self-healing capabilities. The self-healing process is based on the reactivation of RAFT agent embedded in the thermosets under UV light (365 nm), which enables reformation of the polymeric network. The self-healing process can be performed at room temperature without prior deoxygenation. The impact of the type and concentration of RAFT agents in the polymer network on the healing efficiency is explored. Resins containing RAFT agents enable 3D printing of thermosets with self-healing properties, broadening the scope of future applications for polymeric thermosets in various fields.
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