Sticking Effect of a Tackifier on the Fibrillation of Acrylic Pressure-Sensitive Adhesives

In this study, the effect of a tackifier on viscoelastic and adhesion properties acrylic pressure-sensitive adhesives (PSAs) was investigated. The intermediate products in process PSA synthesis, including an acrylate-based copolymer solution, cross-linked copolymer, final product with tackifier, were prepared characterized using dynamic mechanical analysis (DMA). A significant increase storage loss moduli at high angular velocities observed for tackifier. forces solution measured by atomic force microscopy (AFM) found to be almost independent release velocity, whereas that significantly increased higher because effects. Their fibrillations during also visualized charge-coupled device (CCD) camera installed cantilever holder. Although contact area probe surface decreased until detachment, remained constant, necking just below surface. considered resist shrinkage outline subject shearing deformation, which led localized strain rates. Overall, crucial role maintaining sufficient elongation fibrillation established.