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Article Dans Une Revue Macromolecular Materials and Engineering Année : 2021

Enhancing the Yield Stress in Liquid Polydimethylsiloxane to Allow Its 3D Printing: Hydrogels as Removable Fillers

Résumé

For manufacturing parts of very soft materials by liquid deposition modeling (e.g., to mimic living soft tissues), formulations of 3D-printable polydimethylsiloxane have been developed, with the aim of increasing the yield stress of the liquid and reducing the final mechanical modulus. In the present work, suspensions of solid-like hydrogel particles, which are easily 3D-printable, are prepared in order to generate yield stress, and the suspended phase is removed after manufacturing by taking advantage of the thermo-reversibility of the hydrogel behavior, resulting in porosity, which reduces the final rigidity. The reported approach is even more efficient than a previous approach based on emulsion formulations.
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hal-03113976 , version 1 (14-12-2022)

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Clément Perrinet, Edwin-Joffrey Courtial, Arthur Colly, Christophe Marquette, René Fulchiron. Enhancing the Yield Stress in Liquid Polydimethylsiloxane to Allow Its 3D Printing: Hydrogels as Removable Fillers. Macromolecular Materials and Engineering, 2021, 306 (2), pp.2000553. ⟨10.1002/mame.202000553⟩. ⟨hal-03113976⟩
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