Application of Shape Memory and Self-Healable Polymers/Composites in the Biomedical Field: A Review

Tadge, Tejaswini; Garje, Sonali; Saxena, Varun; Raichur, Ashok M.

doi:10.1021/acsomega.3c04569

Cited by 7 publications

(2 citation statements)

References 122 publications

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“…4 Within the domain of SMMs, shape memory polymers (SMPs) [5][6][7][8] offer notable advantages in terms of lightweight and cost-efficient, enabling a wide range of prospective applications in functional textiles, 9 aerospace, 10,11 and biomedical medicine. 12 In particular, SMPs exhibit extraordinary potential for the advancement of space deployable structures 13,14 and bone tissue scaffolds. 15,16 Most SMPs are temperature-sensitive 17 and can return to a permanent shape from a temporary shape when exposed to a thermal stimulus.…”

Section: Introductionmentioning

confidence: 99%

A simple phenomenological model for recovery behaviors of amorphous thermoset‐based shape memory polymers via a time‐varying viscosity

Tian,

Yin,

Chen

et al. 2024

Polymer Engineering & Sci

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Shape memory polymers are a typical class of smart materials with wide potential applications. Mathematically modeling their thermomechanical behaviors with both simplicity and accuracy is challenging. In this work, a time‐varying viscosity model was introduced to investigate amorphous thermoset‐based shape memory polymers, with a special focus on recovery behaviors. This model employs only a varying viscosity to describe both the mechanism of strain storage and release during the shape memory cycle and the modulus‐temperature trend, along with a phenomenological description for the structural transition. Furthermore, the model effectively captures the effect of temperature rates and load conditions on recovery behaviors by tracking the evolution of parameter τ. This parameter shares the same dimension as time and serves as a phenomenological indicator of the chain mobility. Moreover, the parameter τ exhibits similar values among diverse materials at a specific characteristic temperature, providing a simple way to estimate the extent of recovery.Highlights Introduced a simple phenomenological model to reproduce recovery behaviors and depict the modulus‐temperature trend. Both simulation and prediction results exhibit good agreement with tests. Effects of heating rates and load conditions can be traced by the model. The key model parameter τ possesses engineering and physical significance.

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Section: Introductionmentioning

confidence: 99%

A simple phenomenological model for recovery behaviors of amorphous thermoset‐based shape memory polymers via a time‐varying viscosity

Tian,

Yin,

Chen

et al. 2024

Polymer Engineering & Sci

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show abstract

“…On the other hand, intrinsic self-healing involves the use of dynamic reversible structures. Different types of dynamic bonds, such as hydrogen bonds, 15,16 metal-ligand interactions, 17,18 host-guest interactions, 19 disulfide bonds, [20][21][22] D-A cross-links, 23,24 π-π stacking, 25,26 and boron ester bonds, 27,28 can facilitate the self-healing process. 29 In order to repair damaged materials, artificial splicing or filling of the damaged areas is required, followed by subjecting the material to appropriate conditions.…”

mentioning

confidence: 99%

Synthesis of Diels–Alder bond and hydrogen bond synergistic shape memory self‐healing polyurethane elastomers

Zhang,

Wang,

Cao

et al. 2023

J of Applied Polymer Sci

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Self‐healing materials exhibit the ability to repair damage and restore their function. Shape memory assisted self‐healing (SMASH) materials are smart materials that automatically close localized microscopic cracks and repair these cracks by bonding damaged surfaces. A novel temperature‐responsive SMASH polymer composite was established by introducing Diels–Alder bonds (D–A) in polyurethane. In this article, dynamic D–A produced by the polymerization of furfurylamine and 4,4’‐bismaleimidodiphenylmethane was introduced into the molecular chain to enable the polyurethane elastomers containing D–A bonds to acquire self‐repairing capability. The self‐healing properties of the synthesized material were examined using polarized light microscopy, which revealed excellent fracture healing. The mechanical properties before and after healing were tested, in which the initial maximum tensile strength of the material could reach 7.9 MPa, and the maximum tensile strength after self‐healing was 7.3 MPa, with a repair rate of 91.8%; the maximum elongation was 585.9%, and the maximum elongation after self‐healing was 469.5%, with a repair rate of 80.1%. In addition, this material has excellent repair performance for microcracks of different scales, and the micromolten part of the surface after heating can fill the micrometer cracks, play the role of antiaging, and extend the service life of the material.

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Self‐healing mineralized hydrogel scaffolds for stretch‐triggered dye release

Palit,

Suryavanshi,

Banerjee

2024

Polymers for Advanced Techs

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Hydrogels, with self‐healing properties that can self‐repair spontaneously when subjected to mechanical stress, are gaining popularity in the biomedical field. Numerous attempts have been made to create distinctive hydrogels with self‐healing properties, along with stimuli‐responsiveness and biocompatibility. Several techniques exist for fabricating hydrogels, including physical and chemical crosslinking via the creation of covalent bonds, and so on. Here, we prepared self‐healing, stimuli‐responsive, mineralized hydrogel by simply dissolving Kollidon 90‐F, sodium chloride (NaCl), and potassium carbonate (K2CO3) in an aqueous solution. The dissociated CO32− replaces the water molecules from the Kollidon 90‐F polymer backbone and facilitates the cross‐linking of the polymer chain, resulting in hydrogel formation. In addition, the in‐situ produced sodium carbonate (Na2CO3) strengthens the hydrogel network. We optimized the mineralized hydrogels by taking various metal salts and different concentrations of K2CO3. The optimized hydrogel showed good stability over a period of time, was able to maintain viscoelastic properties, possessed good self‐healing ability, and showed a shape retention ability. The shear‐thinning property demonstrated by the optimized hydrogel could open a ray of hope in the bioprinting or 3D printing industry. Further, the stretch‐responsive release of dye from the Self‐healing mineralized hydrogel (SHMH) matrix confirms the mechanoresponsive behavior of the hydrogel. Overall, the findings could be utilized in the future to fabricate a stable drug delivery system that can autonomously release the drug molecules when stretched by daily processes such as joint movements.

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Application of Shape Memory and Self-Healable Polymers/Composites in the Biomedical Field: A Review

Cited by 7 publications

References 122 publications

A simple phenomenological model for recovery behaviors of amorphous thermoset‐based shape memory polymers via a time‐varying viscosity

A simple phenomenological model for recovery behaviors of amorphous thermoset‐based shape memory polymers via a time‐varying viscosity

Synthesis of Diels–Alder bond and hydrogen bond synergistic shape memory self‐healing polyurethane elastomers

Self‐healing mineralized hydrogel scaffolds for stretch‐triggered dye release

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