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Title: Four-dimensional printing of a novel acrylate-based shape memory polymer using digital light processing
Authors: Wu, Hongzhi
Chen, Peng
Yan, Chunze
Cai, Chao
Shi, Yusheng
Keywords: Engineering::Mechanical engineering
4D Printing
Shape Memory Polymer
Issue Date: 2019
Source: Wu, H., Chen, P., Yan, C., Cai, C., & Shi, Y. (2019). Four-dimensional printing of a novel acrylate-based shape memory polymer using digital light processing. Materials and Design, 171, 107704-. doi:10.1016/j.matdes.2019.107704
Series/Report no.: Materials and Design
Abstract: Shape memory polymers (SMPs), a type of promising smart materials, are gradually applied into digital light processing (DLP) technology to realize four-dimensional (4D) printing. However, there is still a great lack of shape memory photosensitive resins suitable for DLP. In this work, novel acrylate-based photosensitive resins designed for DLP are prepared to fabricate SMP parts with tert-Butyl acrylate/1, 6-hexanediol diacrylate (tBA/HDDA) networks. The influence of crosslinker concentration on the shape memory and mechanical properties is systematically investigated. The results show that the developed SMP with 10 wt% crosslinker can withstand 16 consecutive cycles and retain extremely high shape recovery ratio of 100% even after 14 cycles, the one with 20 wt% crosslinker possesses the best shape fixity ratio of over 96%, and the storage modulus can reach up to 1.48 × 103 MPa with 50 wt% crosslinker. Furthermore, these 4D printed SMPs only spends 7–13 s in the 180° shape recovery, indicating a good shape recovery rate. This work confirms that the designed SMPs have potential applications in many areas due to their excellent shape memory performance, and provides valuable guidance for the shape memory properties optimization of other SMPs.
ISSN: 0261-3069
DOI: 10.1016/j.matdes.2019.107704
Rights: © 2019 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:MAE Journal Articles

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