An original architectured NiTi silicone rubber structure for biomedical applications

Rey, Thierry; Cam, Jean‐Benoît Le; Chagnon, Grégory; Favier, Denis; Rebouah, Marie; Razan, Florence; Robin, Éric; Didier, Pierre; Heller, Luděk; Faure, Sylvain; Janouchová, Kateřina

doi:10.1016/j.msec.2014.08.062

Cited by 23 publications

(7 citation statements)

References 27 publications

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“…Due to excellent biocompatibility and better elasticity, silicone rubber has been generally applied in the field of biomedical materials [26,27]. However, the bacterial infection of medical silicone rubber in the human body is one of the main problems in the field of biomedicine.…”

Section: Introductionmentioning

confidence: 99%

Preparation and properties of room-temperature-vulcanized silicone rubber using modified dopamine as a crosslinking agent

Wang¹,

Zhou²,

Ma³

et al. 2022

Mater. Res. Express

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This paper investigates the modification of dopamine (IDA) and uses it as a crosslinking agent to enhance the mechanical strength and hydrophobicity of room-temperature-vulcanized (RTV) silicone rubber. IDA was successfully synthesized with dopamine and 3-isocyanatopropyltriethoxysilane. The structure of IDA was verified by Fourier transform infrared spectroscopy and 1H nuclear magnetic resonance spectroscopy. IDA was introduced into the hydroxyl-terminated polydimethylsiloxane (PDMS) system to prepare RTV silicone rubber, and dibutyltin dilaurate (DBTDL) was used as the catalyst. A combination of the scanning electron microscope, thermal gravimetric analysis, universal testing machine, and contact angle was used to analyze the morphology and properties of RTV silicone rubber. The results demonstrated that the addition of IDA significantly enhanced the thermal stability and mechanical strength of RTV silicone rubber. The mechanical strength of the novel RTV silicone rubber increased by 221%. Moreover, the IDA modified RTV silicone rubber had better hydrophobicity as compared to the PDMS polymer prepared with the traditional crosslinking agent.

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Section: Introductionmentioning

confidence: 99%

Preparation and properties of room-temperature-vulcanized silicone rubber using modified dopamine as a crosslinking agent

Wang¹,

Zhou²,

Ma³

et al. 2022

Mater. Res. Express

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“…The rubber cylinder also provides the backup force for restoring the initial stretch in the wire upon cooling. This concept was inspired by the centripetal action exerted by an outer jacket of SMA wires in a variety of applications including adaptive rubber mounts, 16 tubular peristaltic pumps, [17][18][19][20][21][22][23] pneumatic muscles, 24 soft robots, 25,26 counterpressure space suits, 27 smart fabrics, 28 adaptive bandages, 29 biomedical compliant structures 30,31 and active confinement of concrete columns. [32][33][34] The original paper by Dragoni and Scir e 15 developed an analytical model for the actuator, compared the theory with finite element analyses and described the construction of a proof-of-concept physical prototype.…”

Section: Introductionmentioning

confidence: 99%

Validation and optimization of a compact push-pull rubber actuator energized by an outer coil of shape memory wire

Dragoni

Mammano

2020

Proceedings of the Institution of Mechanical Engineers, Part L:

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The authors have formerly published the analytical model and finite element validation of a push-pull actuator made by winding a thin shape memory wire on a solid rubber cylinder. The cylinder provides elastic backup for the wire upon cooling down and transforms its circumferential contraction into a magnified axial elongation upon heating up. Building on that study, this paper accomplishes three tasks: (1) build prototype actuators and perform simple tests to validate the theory; (2) develop simple procedures for the optimal design of the actuator starting from high-level engineering specifications; (3) envision how the present concept could be improved by replacing the rubber block with a compliant lattice-like or shell-like scaffold with designed properties to further enhance the axial stroke.

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“…Usually, this strategy operates at scales between 1 nm and 10 µm. Architectured silicone materials can also be composed with an association of materials (also called hybrid material) for example fiberreinforced [3] or NiTi-reinforced membranes [4]. Even if such composites are very good candidates for biomimetic membranes, this solution involves the integration of different synthetic materials often associated with local mismatches of mechanical properties and adhesion difficulties.…”

Section: Introductionmentioning

confidence: 99%

Mechanical behavior of architectured photosensitive silicone membranes: Experimental data and numerical analysis

Machado

Stricher

Chagnon

et al. 2016

Mechanics of Advanced Materials and Structures

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International audienceThe aim of this article is to provide an experimental and modeling study of an architectured photosensitive silicone membrane. Mechanical properties are dependent of UV doses used to alter the local cross-link density, resulting in a direct effect on the macroscopic mechanical behavior. A series of mechanical tests were carried out to characterize the mechanical behavior of each phase. Results are presented for various types of loading, including uniaxial, planar, and equibiaxial loading cases, for the UV irradiated and the nonirradiated material. Using the bulge test with an architectured sample, the global stretchability with minimum boundary condition perturbations was investigated. To further explore the unusual properties offered by silicone graded membranes, finite element analysis of graded architecture was performed to try to predict the stress-strain response in the bulge test. Soft-to-hard transition is tested and the macroscopic influence of interface was observed

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An original architectured NiTi silicone rubber structure for biomedical applications

Cited by 23 publications

References 27 publications

Preparation and properties of room-temperature-vulcanized silicone rubber using modified dopamine as a crosslinking agent

Preparation and properties of room-temperature-vulcanized silicone rubber using modified dopamine as a crosslinking agent

Validation and optimization of a compact push-pull rubber actuator energized by an outer coil of shape memory wire

Mechanical behavior of architectured photosensitive silicone membranes: Experimental data and numerical analysis

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