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Scalable Production of Multifunctional Bio‐Based Polyamide 11/Graphene Nanocomposites by Melt Extrusion Processes Via Masterbatch Approach
Summary
Researchers developed a scalable process to make bio-based polyamide 11 plastic reinforced with graphene, improving its electrical conductivity and mechanical strength by up to 56%. This is a materials engineering study on new polymer composites, not directly related to microplastic environmental impacts.
Abstract Bio‐based polyamide 11 ( PA 11)–graphene nanoplatelets ( GNP ) nanocomposites with different filler concentrations were prepared by melt extrusion using a masterbatch dilution process. Graphene platelets are uniformly distributed into the polymer matrix as revealed by scanning electron microscopy. The incorporation of graphene significantly improves the electrical conductivity and dielectric constant of PA 11. GNP s favors the matrix crystallization; crystallization temperature and degree of crystallinity of the nanocomposites tend to increase with increase in graphene loading. Tensile properties (strength and modulus) are slightly improved by the incorporation of GNP into the PA 11 matrix (up to +25% and +56%, respectively, for 5 wt% GNP s) at the expense of ductility (elongation at break divided by 5 for 5 wt% GNP s).
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