[Study on the structures of poly (urea) urethane by FTIR and 1H NMR methods].
Using the FTIR and 1H NMR methods, the structures, relative ratio and inventory ratio of segmented poly (urea) urethanes which are synthesized with different extenders (1,4-butandiol, ethylene diamine and their mixtures)have been studied successfully and the ratationship between the branch ratio and inventory ratio has been determined.
Li
C
C
Department of Chemistry, Nankai University, 300071 Tianjin.
Yang
Y
Y
Zhao
Y
Y
Huang
Q
Q
Huang
J
J
Han
M
M