Achieving shape memory: Reversible behaviors of cellulose–PU blends in wet–dry cycles
Abstract
Shape memory effect (SME) was achieved for cellulose–polyurethane (PU) blends of different compositions in wet–dry cycles, featuring that the amorphous cellulose and the PU content served as the fixing phase and the recovery phase, respectively. The dependence on the compositions of the fixity ratio and the recovery ratio was quantitatively measured by tensile tests. The morphological and thermal properties of the blends were further investigated by scanning electron microscopy and thermogravimetric analysis. The storage modulus of the blends varied reversibly in the wet–dry cycles, as determined by dynamic mechanical analysis. Furthermore, the microstructure of the blends reversibly changed correspondingly, as determined by wide‐angle X‐ray scattering diffraction and Fourier transform infrared. It was predicted that the reversible transition in different amorphous cellulose structures triggered by water led to the reversible variation in modulus as well as the wet–dry SME of the blends. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012
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Luo et al. prepared cellulose nanowhisker/SMPU nanocomposites with outstanding water-active SME; the cellulose nanowhisker in SMPUs did not affect the intrinsic thermal-active SME of the SMPU but enabled the SMPU water-active SME.
“Basing on this idea, Luo et al. [411] prepared cellulose nanowhisker/SMPU nanocomposites with outstanding water-active SME.The cellulose nanowhisker in SMPUs did not affect the intrinsic thermal-active SME of the SMPU but enabled the SMPU water-active SME.”
From A review of stimuli-responsive shape memory polymer composites (2013) · cites this paper as [411]
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A review of stimuli-responsive shape memory polymer composites
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- Authors
- Luo, H., Hu, J., Zhu, Y., Zhang, S., Fan, Y., & Ye, G.
- Affiliations
- Hong Kong Polytechnic University (HK)
- Sichuan University (CN)
- Corresponding author
- Hu, Jinlian
- Venue
- Journal of Applied Polymer Science
- Publisher
- Wiley
- Published
- 2011-12-26
- Volume
- 125
- Issue
- 1
- Pages
- 657-665
- ISSN
- 0021-8995 (ISSN-L)
- 1097-4628
- OpenAlex
- W2057054922
- Cited by
- 27
- References
- 31
- Citations by year
- 2025: 2 · 2024: 1 · 2022: 2 · 2021: 3 · 2019: 4 · 2017: 2 · 2016: 5 · 2014: 3 · 2013: 4 · 2012: 1
- FWCI
- 2.18
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Journal of Applied Polymer Science (publishedVersion)
- PolyU Institutional Research Archive (Hong Kong Polytechnic University) (submittedVersion)
- 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 › Biomaterials › Advanced Cellulose Research Studies
- Keywords
- shape memory effect, wetting-drying cycles, recovery ratio, amorphous cellulose, storage modulus, microstructure, polymer blends
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