Sustainable starch-based biocomposites: Effect of inorganic fillers on the structure and properties

Sustainable starch-based biocomposites: Effect of inorganic fillers on the structure and properties

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Thermoplastic starch composites incorporating isotropic calcium carbonate and anisotropic basalt fiber as inorganic fillers were Ball - Sticks produced through injection molding, covering a broad range of compositions.We focused on the structure of the composites, the interfacial interactions between components, mechanical properties, and dimensional stability.Interfacial adhesion and reinforcement were assessed through model calculations, while local deformation processes were monitored using acoustic emission measurement.The addition of fillers led to a notable reinforcing effect, with a remarkable increase of 1076 % and 234 % in tensile modulus and strength, respectively.

Adding 25 V/V % of basalt fiber reduces shrinkage from 12.5 % to 2 % and minimizes deterioration of stiffness and strength in humid conditions.The improvement was particularly significant when basalt fiber was used Suitcases as fiber reinforcement.