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On-line Access: 2021-07-16
Received: 2020-12-07
Revision Accepted: 2021-06-12
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4D printing of PLA/PCL shape memory composites with controllable sequential deformation
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Suqian Ma, Zeyu Jiang, Meng Wang, Lan Zhang, Yunhong Liang, Zhihui Zhang, Lei Ren, Luquan Ren. 4D printing of PLA/PCL shape memory composites with controllable sequential deformation[J]. Journal of Zhejiang University Science D, 2021, 4(4): 867-878.
@article{title="4D printing of PLA/PCL shape memory composites with controllable sequential deformation",
author="Suqian Ma, Zeyu Jiang, Meng Wang, Lan Zhang, Yunhong Liang, Zhihui Zhang, Lei Ren, Luquan Ren",
journal="Journal of Zhejiang University Science D",
volume="4",
number="4",
pages="867-878",
year="2021",
publisher="Zhejiang University Press & Springer",
doi="10.1007/s42242-021-00151-6"
}
%0 Journal Article
%T 4D printing of PLA/PCL shape memory composites with controllable sequential deformation
%A Suqian Ma
%A Zeyu Jiang
%A Meng Wang
%A Lan Zhang
%A Yunhong Liang
%A Zhihui Zhang
%A Lei Ren
%A Luquan Ren
%J Journal of Zhejiang University SCIENCE D
%V 4
%N 4
%P 867-878
%@ 1869-1951
%D 2021
%I Zhejiang University Press & Springer
%DOI 10.1007/s42242-021-00151-6
TY - JOUR
T1 - 4D printing of PLA/PCL shape memory composites with controllable sequential deformation
A1 - Suqian Ma
A1 - Zeyu Jiang
A1 - Meng Wang
A1 - Lan Zhang
A1 - Yunhong Liang
A1 - Zhihui Zhang
A1 - Lei Ren
A1 - Luquan Ren
J0 - Journal of Zhejiang University Science D
VL - 4
IS - 4
SP - 867
EP - 878
%@ 1869-1951
Y1 - 2021
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1007/s42242-021-00151-6
Abstract: shape memory polymers (SMPs) are a promising class of materials for biomedical applications due to their favorable
mechanical properties, fast response, and good biocompatibility. However, it is difcult to achieve controllable sequential
shape change for most SMPs due to their high deformation temperature and the simplex deformation process. Herein, shape
memory composites based on polylactic acid (PLA) matrix and semi-crystalline linear polymer polycaprolactone (PCL)
are fabricated using 4D printing technology. Compared with pure PLA, with the rise of PCL content, the 4D-printed PLA/
PCL composites show decreased glass transition temperature (Tg) from 67.2 to 55.2 °C. Through the precise control of the
deformation condition, controllable sequential deformation with an outstanding shape memory efect can be achieved for the
PLA/PCL shape memory composites. The response time of shape recovery is less than 1.2 s, and the shape fxation/recov-ery rates are above 92%. In order to simulate sequential petal opening and sequential drug releasing efects, a double-layer
bionic fower and a drug release device, respectively, are presented by assembling PLA/PCL samples with diferent PLA/
PCL ratios. The results indicate the potential applications of 4D-printed PLA/PCL composites in the feld of bio-inspired
robotics and biomedical devices.
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