Structural Reorganization of CNC in Injection-Molded CNC/PBAT Materials under Thermal Annealing.
Composite materials were prepared by extrusion and injection molding from polybutyrate adipate terephthalate (PBAT) and high aspect ratio cellulose nanocrystals (CNCs) extracted from capim dourado fibers. Three CNC contents were used, corresponding to 0.5, 1, and 2 times the theoretical percolation threshold. Small-amplitude oscillary shear (SAOS) experiments show that as the CNC content increases, a more elastic behavior is observed but no percolating network can form within the polymeric matrix as a result of the high shear rates involved during the injection-molding process. Annealing of the samples at 170 °C was performed, and the possible reorganization of the nanofiller was investigated. This reorganization was further elucidated using 2D-SAOS and creep experiments.
Université Grenoble Alpes, LGP2 , F-38000 Grenoble, France.|CNRS, LGP2, F-38000 Grenoble, France.|Université Grenoble Alpes, LRP , F-38000, Grenoble, France.|CNRS, LRP, F-38000 Grenoble, France.
Marcos
M
Mariano
Université Grenoble Alpes, LRP , F-38000, Grenoble, France.|CNRS, LRP, F-38000 Grenoble, France.
Nadia
N
El Kissi
Université Grenoble Alpes, LGP2 , F-38000 Grenoble, France.|CNRS, LGP2, F-38000 Grenoble, France.
Alain
A
Dufresne