surface treatments

Effect of carbon nanostructures and fatty acid treatment on the mechanical and thermal performances of flax/polypropylene composites

Four different strategies for mitigating the highly hydrophilic nature of flax fibers were investigated with a view to increase their compatibility with apolar polypropylene. The effects of two carbon nanostructures (graphene nanoplatelets (GNPs) and carbon nanotubes (CNTs)), of a chemical modification with a fatty acid (stearic acid), and of maleated polypropylene on interfacial adhesion, mechanical properties (tensile and flexural), and thermal stability (TGA) were compared.

Surface modification and characterization of basalt fibers as potential reinforcement of concretes

Basalt fibers were surface treated with silane coupling agents as a method to enhance the adhesion
and durability of fiber-matrix interfaces in concrete based composite materials. In particular, this work
has been focused on the study of basalt fibers chemical coatings with aminosilanes and their subsequent
characterization. Surface treatments were carried out after removing the original sizing applied
by manufacturer and pretreating them with an activation process of surface silanol regeneration.

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