The influence of shape-holding conditions on shape recovery of polyurethane-shape memory polymer foams
Open accessAbstract
The thermomechanical properties of polyurethane-shape memory polymer (SMP) foams and the influence of shape-holding conditions on shape recovery were investigated experimentally. The results obtained can be summarized as follows. (1) By cooling the foam down to below the glass transition temperature T g after compressive deformation above T g , stress decreases and the deformed shape is fixed. By heating the shape-fixed foam up to above T g under no load, the original shape is recovered. (2) The shape deformed above T g is maintained for six months under no load at T g − 60 K without depending on the maximum strain, and the original shape is recovered by heating thereafter. (3) If the deformed shape is held at high temperature, the original shape is not recovered. (4) The ratio of shape irrecovery increases in proportion to the holding strain, holding temperature and holding time.
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Storage of unloaded, compressed specimens of SMPU foam at a temperature well below the thermal transition (T g -60 °C) revealed that a programmed shape can be kept for six months, independent of the applied maximum strain.
“The storage of unloaded, compressed specimens at a temperature well below the thermal transition (T g -60 °C) revealed, that a programmed shape can even be kept for six months, independent of the applied maximum strain.”
From Review on the Functional Determinants and Durability of Shape Memory Polymers (2010) · cites this paper as [179]
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- Authors
- Tobushi, H., Matsui, R., Hayashi, S., & Shimada, D.
- Affiliations
- Aichi Institute of Technology (JP)
- Mitsubishi Heavy Industries (Japan) (JP)
- Corresponding author
- Shimada, D
- ORCID
- Matsui, R
- Venue
- Smart Materials and Structures
- Publisher
- IOP Publishing
- Published
- 2004-06-17
- Volume
- 13
- Issue
- 4
- Pages
- 881-887
- ISSN
- 0964-1726 (ISSN-L)
- 1361-665X
- OpenAlex
- W2066104559
- Cited by
- 107
- References
- 9
- Citations by year
- 2025: 2 · 2024: 3 · 2023: 3 · 2022: 2 · 2021: 3 · 2020: 1 · 2019: 3 · 2018: 3 · 2017: 8 · 2016: 4 · 2015: 5 · 2014: 5 · 2013: 7 · 2012: 12
- FWCI
- 3.30
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- Smart Materials and Structures (publishedVersion)
- Funders
- Mitsubishi Heavy Industries
- Japan Society for the Promotion of Science
- Topics
- Physical Sciences › Materials Science › Polymers and Plastics › Polymer composites and self-healing
- Physical Sciences › Engineering › Mechanical Engineering › Advanced Materials and Mechanics
- Physical Sciences › Materials Science › Polymers and Plastics › Polymer Foaming and Composites
- Keywords
- shape memory polymers, polyurethane foam, shape recovery, glass transition temperature, thermomechanical properties, holding temperature, holding time, compressive deformation
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