2P-14 : Development of Polyurethane pressure-sensitive adhesive capable of controlling adhesion through molecular design

Polyurethane Pressure-sensitive Adhesives (PU-PSA) have been successfully synthesized using various polyols (PEG, PPG etc.) and isocyanates (HDI, IPDI etc.) to control adhesion with no transfer left. In this study, to develop a polyurethane adhesive with better adhesive strength, urethane synthesis research was conducted by changing the ratio of polyol. The presence or absence of polyurethane adhesive synthesis through the ratio control of polyol and isocyanate was analyzed by Fourier-Transform Infrared Spectroscopy(FT-IR), and the characteristics of Polyurethane Pressure-sensitive Adhesives (PU-PSA) were analyzed by using One hundred eighty-degree peel tests by universal testing machine (UTM) and UV-vis Spectrometer to compare structure and characteristics.