Enhancing Epoxy Toughness with a Bis-Hydroxy Urethane Diol Additive Derived from CO2-Based Ethylene Carbonate and Bio-Based Diamine Posted on March 25, 2025 by admin Gyuri Kim, In Wook Song, Jun Ho Jang, Jongwon Hwang, Ki Tae Nam, Min Sang Kwon ACS Appl. Eng. Mater. (2025).