Guo X, Wang Z, Zhang G, Zhao G, Zhao W
Institute of Chemistry, Henan Academy of Sciences, 450002 Zhengzhou.
Guang Pu Xue Yu Guang Pu Fen Xi. 2001 Jun;21(3):320-3.
The studies segmented polyester polyurethaneurea (PUU) elastomers based on 4,4'-diphenylmethane diisocyanate (MDI), ethylene diamine (ED) and polybutylene adipate(PBA) (M.W.1,975 and M.W.1,228) were studied by means of IR spectrascopy. The major IR bands of PUU were first assigned and the views were proposed for the bands at 1,600, 1,317, 1,520 and 1,230 cm-1 assigned by other authors. The reliable theoretical basis for the assignments of IR bands and the studies of hydrogen bonding in these elastomers has been proposed by use of deuteration and varying temperature. The results indicated that substantial hydrogen bonding mainly occurred in the aggregate region of hard segments, a small amount of hydrogen bonding can be formed at the interface between the soft and hard segments. It can be concluded from this work that the studied PUU materials were phase segregation.
通过红外光谱法对基于4,4'-二苯基甲烷二异氰酸酯（MDI）、乙二胺（ED）和聚己二酸丁二醇酯（PBA）（分子量分别为1,975和1,228）的分段聚酯型聚氨酯脲（PUU）弹性体进行了研究。首先对PUU的主要红外波段进行了归属，并对其他作者所归属的1,600、1,317、1,520和1,230 cm-1处的波段提出了看法。利用氘代和变温技术，为这些弹性体中红外波段的归属和氢键研究提出了可靠的理论依据。结果表明，大量氢键主要发生在硬段的聚集区域，软段和硬段之间的界面处可形成少量氢键。从这项工作可以得出结论，所研究的PUU材料存在相分离。
