Strong, Tailored, Biocompatible Shape‐Memory Polymer Networks
Open accessAbstract
Shape‐memory polymers are a class of smart materials that have recently been used in intelligent biomedical devices and industrial applications for their ability to change shape under a predetermined stimulus. In this study, photopolymerized thermoset shape‐memory networks with tailored thermomechanics are evaluated to link polymer structure to recovery behavior. Methyl methacrylate (MMA) and poly(ethylene glycol) dimethacrylate (PEGDMA) are copolymerized to create networks with independently adjusted glass transition temperatures (Tg) and rubbery modulus values ranging from 56 to 92 °C and 9.3 to 23.0 MPa, respectively. Free‐strain recovery under isothermal and transient temperature conditions is highly influenced by the Tg of the networks, while the rubbery moduli of the networks has a negligible effect on this response. The magnitude of stress generation of fixed‐strain recovery correlates with network rubbery moduli, while fixed‐strain recovery under isothermal conditions shows a complex evolution for varying Tg. The results are intended to help aid in future shape‐memory device design and the MMA‐co‐PEGDMA network is presented as a possible high strength shape‐memory biomaterial.
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Shape recovery from a thin stretched rod to a more compact-shaped rod allows fixation of ligaments in bone tunnels, and the rod's radial recovery forces depend on the material composition, such as the cross-linker content.
“In this application, shape recovery from a thin stretched rod to a more compact-shaped rod allows fixation of ligaments in bone tunnels, in which the rod's radial recovery forces depend on the material composition, such as the cross-linker content [27].”
From Shape-memory polymers as a technology platform for biomedical applications (2010) · cites this paper as [27]
The Introduction describes an orthopedic-fixation prototype reduced to a smaller diameter and then heated to recover its shape. The Results and Conclusions link constrained recovery stress to rubbery modulus and crosslink density, which can be adjusted through crosslinking-monomer composition. Our copy does not specify ligament fixation in bone tunnels or measure radial recovery forces in that setting. (LLM, conf=0.86)
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References 39 · Cited by 368
Research works printed but not linked: 1
- [5]Lendlein A Kelch S Clin. Hemorheol. Microcirc 2005 32 2 105 15764819
- Authors
- Yakacki, C. M., Shandas, R., Safranski, D., Ortega, A. M., Sassaman, K., & Gall, K.
- Affiliations
- Georgia Institute of Technology (US)
- University of Colorado Boulder (US)
- Corresponding author
- Yakacki, Christopher M.
- Venue
- Advanced Functional Materials
- Publisher
- Wiley
- Published
- 2008-08-19
- Volume
- 18
- Issue
- 16
- Pages
- 2428-2435
- ISSN
- 1616-301X (ISSN-L)
- 1616-3028
- PMC
- PMC2714647
- OpenAlex
- W2134690872
- Cited by
- 368
- References
- 39
- Citations by year
- 2026: 13 · 2025: 12 · 2024: 14 · 2023: 12 · 2022: 16 · 2021: 20 · 2020: 21 · 2019: 25 · 2018: 21 · 2017: 33 · 2016: 22 · 2015: 27 · 2014: 19 · 2013: 26 · 2012: 26
- FWCI
- 17.58
- Type
- journal article
- Language
- en
- Open access
- green
- www.ncbi.nlm.nih.gov
- Locations
- Advanced Functional Materials (publishedVersion)
- PubMed (publishedVersion)
- Europe PMC (PubMed Central) (acceptedVersion)
- PubMed Central (acceptedVersion)
- Funders
- National Heart, Lung, and Blood Institute (R01HL067393)
- National Institute of Arthritis and Musculoskeletal and Skin Diseases (F31AR053466)
- National Institute of Biomedical Imaging and Bioengineering (R21EB004481)
- Topics
- Physical Sciences › Materials Science › Polymers and Plastics › Polymer composites and self-healing
- Physical Sciences › Engineering › Mechanical Engineering › Advanced Materials and Mechanics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Medicine › Hydrogels: synthesis, properties, applications
- Keywords
- shape memory polymers, photopolymerization, methyl methacrylate, poly(ethylene glycol) dimethacrylate, glass transition temperature, rubbery modulus, stress generation, biomaterials, smart materials
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