Dynamic Boronate Ester Chemistry Facilitating 3D Printing Interlayer Adhesion and Modular 4D Printing of Polylactic Acid

IF 18.5 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Advanced Functional Materials Pub Date : 2025-04-24 DOI:10.1002/adfm.202503682

Wenjun Peng, Hanxin Xia, Jingjun Wu, Zizheng Fang, Xianming Zhang

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Abstract

3D printing, such as fused deposition modeling (FDM), is an advanced 3D shaping technology, employing a layer-by-layer process to construct 3D objects. However, the weak interlayer bonding restricts the performance and functionality of FDM-fabricated parts. Herein, boronate bond exchange is utilized to enhance interlayer mechanical strength and enable modular 4D printing of polylactic acid (PLA). Blending the dynamic system endows PLA with improved interlayer adhesion and welding capabilities. The blended filaments demonstrate excellent printability, with a 150% enhancement in Z-axis interlayer strength, while nearly unchanged along the X-axis. Moreover, this enhanced interlayer bonding facilitates the modular assembly of intricate structures, eliminating the need for traditional 3D-printed supports. Combined with shape memory effects, diverse modular 4D printing possibilities are demonstrated. This strategy highlights the potential of dynamic covalent bonds in 3D printing, enhancing not only material performance but also intelligent designs.

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动态硼酸酯化学促进3D打印层间粘附和聚乳酸的模块化4D打印

3D打印，如熔融沉积建模（FDM），是一种先进的3D成型技术，采用一层一层的工艺来构建3D物体。然而，层间键合薄弱制约了fdm制件的性能和功能。本文利用硼酸键交换来提高层间机械强度，实现聚乳酸（PLA）的模块化4D打印。混合动力系统使聚乳酸具有更好的层间附着力和焊接性能。混合长丝表现出优异的可打印性，z轴层间强度提高150%，而沿x轴几乎不变。此外，这种增强的层间粘合有助于复杂结构的模块化组装，从而消除了对传统3d打印支架的需求。结合形状记忆效应，展示了多种模块化4D打印可能性。这一策略突出了动态共价键在3D打印中的潜力，不仅提高了材料性能，还提高了智能设计。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Advanced Functional Materials 工程技术-材料科学：综合

CiteScore

29.50

自引率

4.20%

发文量

2086

审稿时长

2.1 months

期刊介绍： Firmly established as a top-tier materials science journal, Advanced Functional Materials reports breakthrough research in all aspects of materials science, including nanotechnology, chemistry, physics, and biology every week. Advanced Functional Materials is known for its rapid and fair peer review, quality content, and high impact, making it the first choice of the international materials science community.