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Communication Dans Un Congrès Année : 2016

Plasticized protein for 3D printing by fused deposition modeling

Résumé

The developments of Additive Manufacturing (AM) by Fused Deposition Modeling (FDM) now target new 3D printable materials, leading to novel properties like those given by biopolymers such as proteins: degradability, biocompatibility and edibility. Plasticized materials from zein, a storage protein issued from corn, present interesting thermomechanical and rheological properties, possibly matching with AM-FDM specifications. Thus commercial zein plasticized with 20% glycerol has a glass transition temperature (T-g) at about 42 degrees C, after storage at intermediate relative humidity (RH=59%). Its principal mechanical relaxation at T-a approximate to 50 degrees C leads to a drop of the elastic modulus from about 1.1 GPa, at ambient temperature, to 0.6 MPa at T-alpha+100 degrees C. These values are in the same range as values obtained in the case of standard polymers for AM-FDM processing, as PLA and ABS, although relaxation mechanisms are likely different in these materials. Such results lead to the setting up of zein-based compositions printable by AM-FDM and allow processing bioresorbable printed parts, with designed 3D geometry and structure.
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hal-01602509 , version 1 (03-06-2020)

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Paternité - Partage selon les Conditions Initiales

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Laurent Chaunier, Eric Leroy, Guy Della Valle, Denis Lourdin. Plasticized protein for 3D printing by fused deposition modeling. 19. International ESAFORM Conference on Material Forming (ESAFORM), Apr 2016, Nantes, France. ⟨10.1063/1.4963611⟩. ⟨hal-01602509⟩
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