Enhancement of Pressure‐Sensitive Adhesive by CO ₂ Laser Treatment

Pressure-sensitive adhesives (PSAs) are polymeric films that can be adhered to and detached from surfaces without leaving residue. Researchers looking enhance the bond strength between PSAs different substrates. It achieved by tuning PSA's peeling, shear, tack properties for every specific case. ‘Very High Bond’ (VHB) is a widely used PSA because of its high compliance suitable stretchable soft-matter devices. In this study, simple fast surface treatment approach modify adhesion VHB CO2 laser engraving reported. We characterized method with Multiple settings were tested each material combination determine conditions at which would highest. Tests on mechanical properties, ablation directions, chemical composition, tackiness, viscosity, peeling forces conducted understand viscoelasticity changes. A higher concentration non-crosslinked materials was determined in structure after than before. Thus, we reason changes cleavage polymer network. This work provides route popular using common equipment.