Polymer Brush Coating and Adhesion Technology at Scale.

Area of Science:

• Materials Science and Engineering
• Polymer Chemistry
• Surface Science

Background:

• High-performance hybrid products require strong joints between dissimilar materials.
• Traditional adhesion methods often necessitate primers and thick bonding layers due to surface incompatibility.
• Polymer brushes offer a novel approach to surface compatibilization and adhesion.

Purpose of the Study:

• To detail research on adhesion promotion using polymer brushes.
• To explore two primary adhesive mechanisms: physical bonding and chemical bonding.
• To showcase industrial applications and scalable synthesis methods for polymer brush technology.

Main Methods:

• Investigated physical bonding via polymer brush entanglement (e.g., PMMA brushes on stainless steel).
• Examined chemical bonding through functionalized polymer brushes (e.g., PHEMA brushes for silicone-titanium adhesion).
• Reviewed synthesis techniques, including ambient and scalable atom transfer radical polymerization (ATRP).

Main Results:

• Demonstrated strong adhesion between polymer brush-coated metals and bulk polymers.
• Achieved improved adhesion between dissimilar materials like silicone and titanium using functionalized brushes.
• Established that polymer brushes can compatibilize fillers and nanoparticles with incompatible matrices.

Conclusions:

• Polymer brushes enable robust, nanometer-thin adhesive layers between diverse materials.
• Strategic design of polymer brushes facilitates both physical and chemical bonding mechanisms.
• Advancements in scalable ATRP support the industrial production of brush-modified materials for hybrid products.