共 80 条
4D-printed hybrids with localized shape memory behaviour: Implementation in a functionally graded structure
被引:37
作者:
Sun, Yu-Chen
[1
,2
,3
]
Wan, Yimei
[1
,2
,3
]
Nam, Ryan
[1
,2
,3
]
Chu, Marco
[1
,2
,3
]
Naguib, Hani E.
[1
,2
,3
]
机构:
[1] Univ Toronto, Dept Mech & Ind Engn, Toronto, ON, Canada
[2] Univ Toronto, Dept Mat Sci & Engn, Toronto, ON, Canada
[3] Univ Toronto, Inst Biomat & Biomed Engn, Toronto, ON, Canada
基金:
加拿大自然科学与工程研究理事会;
关键词:
MECHANICAL-PROPERTIES;
POLYMER;
TECHNOLOGY;
PEG;
PLA;
COMPOSITES;
SCAFFOLDS;
BLENDS;
STEREOLITHOGRAPHY;
NANOCOMPOSITES;
D O I:
10.1038/s41598-019-55298-1
中图分类号:
O [数理科学和化学];
P [天文学、地球科学];
Q [生物科学];
N [自然科学总论];
学科分类号:
07 ;
0710 ;
09 ;
摘要:
4D-printed materials are an emerging field of research because the physical structure of these novel materials respond to environmental changes. 3D printing techniques have been employed to print a base material with shape memory properties. Geometrical deformations can be observed once an external stimulus triggers the shape memory effect (SME) integrated into the material. The plasticizing effect is a well-known phenomenon where the microscopic polymer chain movements have been altered and reflected in different shape memory behaviour. It has been suggested that a 4D material with localized actuation behaviour can be fabricated by utilizing functionally graded layers made from different degrees of plasticizing. This study demonstrated that a novel 4D material can be fabricated from material extraction continuous printing technique with different loadings of poly(ethylene glycol) (PEG) plasticize, achieving localized thermal recovery. The results indicate that a plasticized functional layer is an effective technique for creating next generation 4D materials.
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页数:13
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