Seung-Suk Baek

Preparation and adhesion performance of transparent acrylic pressure-sensitive adhesives containing menthyl acrylate

Using the synthesized menthyl acrylate derived from the menthol as biomass, transparent acrylic pressure-sensitive adhesives (PSAs) composed of semi-interpenetrated structured polymer networks were prepared successfully. The effect of menthyl acrylate concentration in the PSAs was investigated on adhesion performances of the acrylic PSAs. The prepared syrups for acrylic PSAs were characterized and the optical properties for their acrylic PSA films were also examined by UV–Vis spectroscopy, haze meter and prism coupler. The acrylic PSAs exhibited high transparency in the visible wavelength region regardless of reliability test (85/85 test). With increasing menthyl acrylate concentration in the acrylic PSAs, adhesion performances such as the peel strength, cohesion strength, and probe tack were increased.

Preparation and adhesion performance of transparent acrylic pressure sensitive adhesives for touch screen panel

Transparent acrylic pressure sensitive adhesives (PSAs) comprised semi-interpenetrated structured polymer networks were prepared with different co-monomer compositions. Emphasis was placed on the effect of functional groups in the co-monomer including morpholine and tetrahydrofurane moieties in the typical acrylic PSA formulation. The synthesized acrylic PSA syrups were characterized and the optical properties of the acrylic PSA film were also examined by ultraviolet–visible spectroscopy, haze meter, and prism coupler. Acrylic PSAs exhibit high transparency in the visible wavelength region. Adhesion performance was measured by the peel strength, cohesion strength, and probe tack tests. With increasing 4-acryloyl morpholine monomer concentration in the acrylic PSAs, the peel strength, cohesion strength, and probe tack increased.