Water-soluble hyperbranched poly(ester urethane)s based on d,l-alanine: isocyanate-free synthesis, post-functionalization and application
作者:You-Mei Bao、Guo-Rong Shen、Jing He、Yue-Sheng Li
DOI:10.1039/c2gc35261c
日期:——
The green synthesis of a novel hyperbranched poly(ester urethane) (HBPEU) has been reported via an isocyanate-free method based on D,L-alanine and a lower-toxic cyclic carbonate monomer, glycerol carbonate. Benefiting from the efficient reaction between the amine and five-membered cyclic carbonate, an AB2-type monomer bearing urethane linkages has been quantitatively formed without using a toxic isocyanate