LIU Jing-ru, CHAO Ling-ling, YU Qiang, ZHU Meng-bing, GU Chun-miao. Study on Effect of Hyperbranched Polyester on the Mechanical Properties and Morphology of PEG Polyurethane Elastomer by ATR-FTIR[J]. Spectroscopy and Spectral Analysis, 2011, 31(4): 983