POORNAGANTI SATYANARAYANA

For polymeric materials, FDM provides limitations in accuracy and surface finish. Polymeric 3D printed parts have a rough surface because of the filament deposition, texture of the slices laid and staircase effect. Application of surface coatings to these parts may improve mechanical properties, including surface texture and dimensions accuracy. Recent studies indicate development of surface-coated 3D printed polymeric parts primarily for use in automobiles, aviation, ships, food packaging, electrical, and textile applications. Researchers have studied the impact of surface coatings on surface finish and dimensional accuracy. Various processes, such as icing-delay, anti-frosting, and self-cleaning, benefit from super hydrophobic surface. Super hydrophobic surfaces are characterized by important characteristics, like durability and storage, corrosion resistance. Self-healing polymers are emerging as a novel smart material as they possess the ability to heal upon damage without any external mediation. These can appear in a variety of forms, intrinsic or extrinsic, and can be made to take different forms. This paper presents insights into the state of research being carried out in the field of surface characterization especially on 3D printed polymeric parts.