TY - GEN
T1 - Self-Assembly of Shape Memory Polymer Printed by Fused Deposition Modeling
AU - Nojiri, Akihiro
AU - Iwase, Eiji
AU - Hashimoto, Michinao
N1 - Funding Information:
This work was supported by Digital Manufacturing and Design (DManD) Centre at Singapore University of Technology and Design (RGDM1620403) and JSPS KAKENHI Grant Number 18H03868.
Publisher Copyright:
© 2019 IEEE.
PY - 2019/1
Y1 - 2019/1
N2 - We demonstrated the method for self-assembly of a polyurethane-based shape memory polymer (SMP) printed by a fused deposition modeling (FDM) 3D printer. SMP transfers between a rubber state and a glass state by the change of temperature, and this characteristic is usually used for memorizing a 3D shape. In this study, we used this characteristic not for shape memory but for self-assembly. When a SMP filament is printed in a rubber state by FDM, some internal stress is introduced to the printed SMP structure. Above the glass transition temperature (T-{g}), the SMP structure transfers to a rubber state and releases internal stress and shrinks. Utilizing bi-layer structure with different shrink rate, we demonstrated that 2D SMP structures can transform into 3D structures. We achieved to control the rate and direction of shrinking by varying printing temperatures and patterns, which then allowed defining bending directions to form 3D structures.
AB - We demonstrated the method for self-assembly of a polyurethane-based shape memory polymer (SMP) printed by a fused deposition modeling (FDM) 3D printer. SMP transfers between a rubber state and a glass state by the change of temperature, and this characteristic is usually used for memorizing a 3D shape. In this study, we used this characteristic not for shape memory but for self-assembly. When a SMP filament is printed in a rubber state by FDM, some internal stress is introduced to the printed SMP structure. Above the glass transition temperature (T-{g}), the SMP structure transfers to a rubber state and releases internal stress and shrinks. Utilizing bi-layer structure with different shrink rate, we demonstrated that 2D SMP structures can transform into 3D structures. We achieved to control the rate and direction of shrinking by varying printing temperatures and patterns, which then allowed defining bending directions to form 3D structures.
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U2 - 10.1109/MEMSYS.2019.8870849
DO - 10.1109/MEMSYS.2019.8870849
M3 - Conference contribution
AN - SCOPUS:85074365940
T3 - Proceedings of the IEEE International Conference on Micro Electro Mechanical Systems (MEMS)
SP - 380
EP - 383
BT - 2019 IEEE 32nd International Conference on Micro Electro Mechanical Systems, MEMS 2019
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 32nd IEEE International Conference on Micro Electro Mechanical Systems, MEMS 2019
Y2 - 27 January 2019 through 31 January 2019
ER -