antisticking

Antisticking refers to properties, coatings, or designs that reduce the tendency of a surface to bond with another substance. It is used to enable easy release of foods, polymers, or solids from molds, tools, or surfaces, and to minimize fouling in industrial processes. The goal is to lower adhesion forces and sometimes to lubricate the interface.

The mechanisms include reducing real contact area by smooth or microstructured surfaces, lowering surface energy, adding a lubricating layer, or using chemically inert materials. Release agents provide temporary barriers that prevent bonding during processing.

Common approaches include durable coatings such as PTFE and other fluoropolymers, silicone-based coatings, and ceramic or fluorinated ceramic coatings; release polymer additives; surface treatments (plasma, corona) or texturing to minimize contact.

Applications include non-stick cookware, molds for metals, plastics, or chocolate, and release liners in packaging; anti-adhesion coatings on medical devices, textiles, and industrial equipment.

Durability depends on temperature, pressure, abrasion, and chemicals. PTFE offers low surface energy but can degrade at high heat or when scratched. PFAS concerns have driven research into alternatives such as ceramic or silicone coatings.

Performance is assessed by release or demolding tests, abrasion resistance, coating thickness, and friction. Real-world results depend on cleanliness, residence time, and the material released.