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http://dx.doi.org/10.17702/jai.2021.23.1.8

Synthesis and Self-healing Properties of Waterborne Polyurethane Based on Polycarbonate and Polyether Polyol  

Kwon, Seon-Young (Department of Polymer Science and Engineering, Pusan National University)
Park, Soo-Yong (Department of Polymer Science and Engineering, Pusan National University)
Paik, In Kyu (Korea Institute of Footwear & Leather Technology)
Chung, Ildoo (Department of Polymer Science and Engineering, Pusan National University)
Publication Information
Journal of Adhesion and Interface / v.23, no.1, 2022 , pp. 8-16 More about this Journal
Abstract
In this study, self-healable waterborne polyurethane (SH-WPU) as shoes and coating materials with self-healable disulfide functionalities was synthesized by mixing polyether polyol to impart excellent durability and heat resistance and polycarbonate polyol to impart excellent mechanical properties. The synthesized SH-WPU was characterized by fourier transform-infrared spectroscopy (FT-IR), and physical and self-healing properties were confirmed through universal testing machine (UTM) and scanning electron microscope (SEM) measurements. Tensile strength and hardness were increased and elongation was decreased by using polycarbonate polyol. In addition, as a result of comparison of thermal properties, thermal stability has been increased as the content of polycarbonate polyol increased. The healing efficiency showed the highest efficiency when poly(tetramethylene ether)glycol : polycarbonate polyol = 0.75 : 0.25, and it was confirmed that the damaged part was healed through surface observation using a microscope and SEM.
Keywords
Self-healing; Waterborne; Polyurethane; Polycarbonate; Polyether;
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