Bio‐based hyperbranched polyurethane/Fe3O4 nanocomposites as shape memory materials
Abstract
The bio‐based shape memory polymers have generated immense interest as advanced smart materials. Mesua ferrea L. seed oil‐based hyperbranched polyurethane (HBPU)/Fe3O4 nanocomposites were prepared by the in‐situ polymerization technique. The transmission electron microscopy confirmed the homogeneous distribution of the Fe3O4 nanoparticles in polymer matrix, whereas Fourier transform infrared spectroscopic study revealed the presence of strong interfacial interactions between them. The incorporation of Fe3O4 (0 to 10 wt%) into the HBPU resulted in an increase in tensile strength (5.5–15 MPa) and scratch resistance (3–6 kg). The thermo‐gravimetric analysis indicated the improvement of thermal stability (240–270°C) of the nanocomposites. The nanocomposites exhibited full shape fixity, as well as almost full shape recovery under the microwave stimulus. The shape recovery speed increased with the increase of Fe3O4 nanoparticles content in the nanocomposites. Thus, the studied nanocomposites might be used as advanced shape memory materials in different potential fields. Copyright © 2013 John Wiley & Sons, Ltd.
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HPUs are suitable candidates for production of magnetic NPs (up to 10 wt%) loaded SMPs.
“Other suitable candidates for the production of magnetic NPs (up to 10 wt%) loaded SMPs are the HPUs [161,162].”
From Shape-memory polymers for multiple applications in the materials world (2016) · cites this paper as [162]
HPUs present the advantage of possessing low viscosity, high solubility and reactivity, and good compatibilizing capacity.
“They present the advantage of possessing low viscosity, high solubility and reactivity, and good compatibilizing capacity.”
From Shape-memory polymers for multiple applications in the materials world (2016) · cites this paper as [162]
The obtained HPU materials were non-contact activated under microwave stimulus and were characterized by improved mechanical and thermal properties.
“The obtained materials were non-contact activated under microwave stimulus and were characterized by improved mechanical and thermal properties.”
From Shape-memory polymers for multiple applications in the materials world (2016) · cites this paper as [162]
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Shape-memory polymers for multiple applications in the materials world
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- Authors
- Kalita, H., & Karak, N.
- Affiliations
- Tezpur University (IN)
- Corresponding author
- Karak, Niranjan
- Venue
- Polymers for Advanced Technologies
- Publisher
- Wiley
- Published
- 2013-05-24
- Volume
- 24
- Issue
- 9
- Pages
- 819-823
- ISSN
- 1042-7147 (ISSN-L)
- 1099-1581
- OpenAlex
- W1898807293
- Cited by
- 30
- References
- 32
- Citations by year
- 2023: 2 · 2022: 2 · 2021: 5 · 2020: 3 · 2019: 3 · 2017: 3 · 2016: 2 · 2015: 2 · 2014: 6 · 2013: 2
- FWCI
- 2.89
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Polymers for Advanced Technologies (publishedVersion)
- Topics
- Physical Sciences › Materials Science › Polymers and Plastics › Polymer composites and self-healing
- Physical Sciences › Engineering › Mechanical Engineering › Advanced Materials and Mechanics
- Physical Sciences › Engineering › Mechanical Engineering › Epoxy Resin Curing Processes
- Keywords
- hyperbranched polyurethane, Fe3O4 nanoparticles, shape memory polymers, bio-based polymers, magnetic nanocomposites, shape fixity, tensile strength, thermal stability, scratch resistance
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