木筏
链式转移
双功能
黄药
可逆加成-断裂链转移聚合
聚合
材料科学
聚合物
醋酸乙烯酯
化学工程
高分子化学
纳米技术
化学
自由基聚合
复合材料
有机化学
共聚物
催化作用
工程类
作者
Xiaofeng Pan,Jiajia Li,Zhuang Li,Qing Li,Xiangqiang Pan,Zhengbiao Zhang,Jian Zhu
标识
DOI:10.1002/anie.202318564
摘要
Abstract Photoinduced 3D printing based on the reversible addition‐fragmentation chain transfer (RAFT) process has emerged as a robust method for creating diverse functional materials. However, achieving precise control over the mechanical properties of these printed objects remains a critical challenge for practical application. Here, we demonstrated a RAFT step‐growth polymerization of a bifunctional xanthate and bifunctional vinyl acetate. Additionally, we demonstrated photoinduced 3D printing through RAFT step‐growth polymerization with a tetrafunctional xanthate and a bifunctional vinyl acetate. By adjusting the molar ratio of the components in the printing resins, we finely tuned the polymerization mechanism from step‐growth to chain‐growth. This adjustment resulted in a remarkable range of tunable Young's moduli, ranging from 7.6 MPa to 997.1 MPa. Moreover, post‐functionalization and polymer welding of the printed objects with varying mechanical properties opens up a promising way to produce tailor‐made materials with specific and tunable properties.
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