调整3D打印对象的机械性质,通过混合链传递剂,在激进促进的阴离子RAFT聚合过程中调整它们的机械性质
Guangliang Li1, Bowen Zhao1, Yuzhen Zhu1
1State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Suzhou key Laboratory of Macromolecular Design and Precision Synthesis, Department of Polymer Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, China.
Macromolecular rapid communications
|August 9, 2024
概括
研究人员开发了一种新方法来控制3D打印材料的机械性能,使用混合链转移剂在激素促进的阴离子可逆添加碎片化链转移聚合过程中. 这种技术提高了材料的可调性,用于先进的应用.
科学领域:
- 聚合物化学 聚合物化学
- 材料科学 材料科学 材料科学
- 3D打印技术的使用
背景情况:
- 光诱导的电离子可逆添加-碎片化链转移 (RAFT) 聚合是一种通过3D打印创建刺激响应材料的关键技术.
- 目前对这些3D打印材料的机械性能进行精确控制是有限的,这阻碍了它们的广泛使用.
研究的目的:
- 介绍一种简单的方法来调整3D打印对象的机械性能.
- 为了研究混合链转移剂 (CTA) 在激素促进的阴离子RAFT (RPC-RAFT) 聚合过程中对材料特性的影响.
主要方法:
- 用于3D打印的激素促进的阴离子RAFT (RPC-RAFT) 聚合.
- 采用了两种不同的链传递代理 (CTA) 的混合物.
- 进行拉伸试验和动态机械分析 (DMA) 来评估机械性能.
主要成果:
- 较高的CTA度和更活跃的CTA的比率增加导致的模量和玻璃过渡温度降低.
- 增加的CTA含量导致更高的拉伸性故障应变,表明增强的柔性.
- 展示了一种可调整的方法来修改材料的刚性和灵活性.
结论:
- 在RPC-RAFT聚合中混合两个CTA为精确控制3D打印材料的机械性质提供了一个简单的途径.
- 这种方法扩大了在3D打印应用中定制材料性能的能力.
- 这些发现为设计具有特定机械属性的先进刺激响应材料提供了有价值的策略.
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