Cong Liang C, Li P, Hai Hu X, Li W. Synthesis and Properties of Sulphonic Acid Type Polyurethane. ajc [Internet]. 2014 Mar. 4 [cited 2024 Jul. 23];26(5):1437-9. Available from: https://asianpubs.org/index.php/ajchem/article/view/26_6_52