Magnetic programming of 4D printed shape memory composite structures

被引：164
|
作者：
Zhang, Fenghua [1 ]
Wang, Linlin [1 ]
Zheng, Zhichao [1 ]
Liu, Yanju [2 ]
Leng, Jinsong [1 ]
机构：
[1] Harbin Inst Technol, Natl Key Lab Sci & Technol Adv Composites Special, 2 Yikuang St,POB 3011, Harbin 150080, Heilongjiang, Peoples R China
[2] Harbin Inst Technol, Dept Astronaut Sci & Mech, 92 West Dazhi St,POB 301, Harbin 150001, Heilongjiang, Peoples R China
来源：
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING | 2019年 / 125卷
基金：
中国国家自然科学基金; 中国博士后科学基金;
关键词：
Shape memory polymers; 4D printing; Magnetic field actuation; Complex structures; RECOVERY FORCE; POLYMERS; SCAFFOLDS; BEHAVIOR;
D O I：
10.1016/j.compositesa.2019.105571
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
4D printed shape memory polymers and their composites are currently a highly topical research area. The potential applications for 4D printed smart materials are wide-reaching, with particular promise for personalized medicine. In this work, we 4D printed various structures made of biocompatible and biodegradable polylactic acid (PLA) and PLA/Fe3O4 composite filaments. The shape memory behaviors of the 4D printed structures triggered by magnetic field were investigated. The printed structures can return to their original shapes with a high speed in just a few seconds. Moreover, the structures like bone tissues printed by PLA/Fe3O4 composites filaments with 15% Fe3O4 were actuated by magnetic field at 27.5 kHz. During the shape recovery process, surface temperature of the printed structures is uniform and around 40 degrees C. This physiologically relevant operating temperature range is a highly attractive feature for potential healthcare and biomedical applications.
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页数：7
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