Shape memory segmented polyurethanes: dependence of behavior on nanocellulose addition and testing conditions
Abstract
The response of synthesized shape memory segmented polyurethanes (PUs) was affected by the addition of cellulose nanocrystals, as well as by the various conditions selected to carry out thermomechanical cyclic tests. The PUs were synthesized from an α‐hydro‐ω‐hydroxy‐poly(ethylene oxide), tolylene‐2,4‐diisocyanate and 1,4‐butanediol as chain extender. Nanocomposites were prepared by mixing a suspension of cellulose nanocrystals in N,N‐dimethylformamide with the thermoplastic PU dissolved in the same organic solvent. The thermal properties of the neat PU and resulting composites were examined using differential scanning calorimetry. It was found that cellulose addition increases the PU soft segment melting and crystallization temperatures and the degree of crystallinity of this phase. Shape memory behavior was studied using cyclic thermal tensile tests. Both neat PU and composites exhibit shape memory properties, with fixity and recovery values that depend on heating temperature, imposed deformation, deformation rate and nanofiller addition. Copyright © 2011 Society of Chemical Industry
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A small amount of well-dispersed cellulose nanowhiskers remarkably improved the stiffness of shape memory polymer, while no obvious decrease in shape memory properties was observed.
“A small amount of well-dispersed cellulose nanowhiskers remarkably improved the stiffness of SMP, while no obvious decrease in shape memory properties was observed.”
From A review of stimuli-responsive shape memory polymer composites (2013) · cites this paper as [328]
A small amount of well-dispersed cellulose nanowhiskers remarkably improved the stiffness of SMP, while no obvious decrease in shape memory properties was observed.
“A small amount of well-dispersed cellulose nanowhiskers remarkably improved the stiffness of SMP, while no obvious decrease in shape memory properties was observed.”
From A review of stimuli-responsive shape memory polymer composites (2013) · cites this paper as [328]
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A review of stimuli-responsive shape memory polymer composites
Meng, H., & Li, G. (2013) · Polymer · doi:10.1016/j.polymer.2013.02.023 · Cited by 1,190 · see citing works
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- Authors
- Auad, M. L., Richardson, T., Hicks, M., Mosiewicki, M. A., Aranguren, M. I., & Marcovich, N. E.
- Affiliations
- Auburn University (US)
- Consejo Nacional de Investigaciones Científicas y Técnicas (AR)
- Corresponding author
- Marcovich, Norma E
- Venue
- Polymer International
- Publisher
- Wiley
- Published
- 2011-10-17
- Volume
- 61
- Issue
- 2
- Pages
- 321-327
- ISSN
- 0959-8103 (ISSN-L)
- 1097-0126
- OpenAlex
- W2135671823
- Cited by
- 33
- References
- 40
- Citations by year
- 2022: 2 · 2021: 4 · 2020: 1 · 2019: 3 · 2018: 4 · 2017: 3 · 2016: 5 · 2015: 3 · 2014: 4 · 2013: 4
- FWCI
- 2.18
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Polymer International (publishedVersion)
- Funders
- U.S. Department of Commerce
- Consejo Nacional de Investigaciones Científicas y Técnicas
- Universidad Nacional de Mar del Plata
- 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 crystallization and properties
- Keywords
- shape memory polymers, segmented polyurethanes, cellulose nanocrystals, nanocomposites, soft segment crystallization, crystallinity, strain rate, thermomechanical behavior
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