The Effect of Temperature on the Structure and Properties of Polyurethane-urea by FTIR

被引：0
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作者：
Li, Zaifeng
Yang, Guanghua
Li, Dehe
Xin, Haobo
机构：
[1] Rubber New Techniques Res. Institute, Qingdao Inst. of Chemical Technology, 266042 Qindao, China
[2] State Key Lab. of Heavy Oil Proc., University of Petroleum, 102200 Beijing, China
来源：
Guang Pu Xue Yu Guang Pu Fen Xi/Spectroscopy and Spectral Analysis | 2000年 / 20卷 / 03期
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摘要：
The effect of temperature on the structure and properties of polyurethene-urea was investigated by in situ FTIR. Data from FTIR spectra showed that with increasing temperature the νNHHbonded areas decrease and the νNHfree band areas increase. The band site of νNHHbonded shifted to higher wavenumbers and the band site of νNHfree keeps constant. The band site of Cfree urethane shift from 1 731 cm-1 to 1 736 cm-1. All kinds of carbonly bands sites shifted to high wavenumbers. But the band sites of amide II and the C= C in aromatic ring shifted to low wavenumbers. The properties of PUU polymers was determinted by the structure of soft domains.
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页码：320 / 321
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