Surface Modification of Polymers by Plasma Treatment for Appropriate Adhesion of Coatings

Abstract

In this study, recent advances in tailoring the surface properties of polymers for the optimization of the adhesion of various coatings by non-equilibrium gaseous plasma are reviewed, and important findings are stressed. Different authors have used various experimental setups and reported results that scatter significantly and are sometimes contradictory. The correlations between the processing parameters and the adhesion are drawn, and discrepancies are explained. Many authors have explained improved adhesion with the adjustment of the surface free energy or wettability of the polymer substrate and the surface tension of liquids used for the deposition of thin films. The adhesion force between the polymer substrate and the coating does not always follow the evolution of the surface wettability, which is explained by several effects, including the aging effects due to the hydrophobic recovery and the formation of an interlayer rich in loosely bonded low molecular weight fragments.

Recent Advances in Corrosion Inhibition of Bonded NdFeB Magnets

“…From this point of view, polyether ether ketone (PEEK) may be a solution in specific niches (printed magnets, for example) since it provides fairly good interface adhesion [ 42 ]. The adhesion between a polymer and a coating depends on the balance between the surface properties of both materials [ 43 ], but no recent literature has mentioned any pre-treatment of the magnetic powder for optimization of the surface free energy of NdFeB materials.…”

“…From this point of view, polyether ether ketone (PEEK) may be a solution in specific niches (printed magnets, for example) since it provides fairly good interface adhesion [42]. The adhesion between a polymer and a coating depends on the balance between the surface properties of both materials [43], but no The magnetic particles in bonded magnets should be wetted perfectly by the molten polymer because non-coated areas on the magnet surface will corrode quickly. The wetting of solid materials is governed by the viscosity of the molten polymer, the surface tension of the liquid polymer, and the surface free energy of the magnetic material.…”

Adhesion Properties and Stability of Polar Polymers Treated by Air Atmospheric Pressure Plasma

“…Polymer surfaces typically exhibit hydrophobicity and intrinsic inertness, which raise challenges in applications requiring convenient adhesion, friction, penetrability, wettability, dyeability, and biocompatibility. Therefore, it is essential to employ appropriate methods and techniques to tailor the surface of polymer materials to meet the requirements of specific applications [ 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 ].…”