高等学校化学学报

高等学校化学学报 ›› 1995, Vol. 16 ›› Issue (6): 986.

• 研究简报 • 上一篇    下一篇

多嵌段聚氨酯脲硬段模型化合物的合成和结构研究

罗宁, 王得宁, 应圣康   

  1. 华东理工大学材料科学研究所, 上海, 200237
  • 收稿日期:1994-06-20 修回日期:1994-09-25 出版日期:1995-06-24 发布日期:1995-06-24
  • 通讯作者: 应圣康
  • 作者简介:罗宁,男,33岁,博士,副教授.
  • 基金资助:

    国家自然科学基金

Synthesis and Structure Study of Hard-Segment Model Compounds in Poly(urethane urea)Block Copolymers

LUO Ning, WANG De-Ning, YING Sheng-Kang   

  1. Institute of Material Science and Engineering, Shanghai, 200237
  • Received:1994-06-20 Revised:1994-09-25 Online:1995-06-24 Published:1995-06-24

PDF (PC)

被引次数

7

关键词: 3, 5-二乙基甲苯二胺, 4, 4&prime, -二苯基甲烷二异氰酸酯, 氢键, 微晶, 热分析

Abstract: A series of hard-segment model compounds based on 3,5-diethyltoluene diamine,4,4'-diphenylmethane diisocyanate and phenyl isocyanate has been synthesized in this paper.The model compounds are microcrystals.Combined with WAXD analysis,the assignment of the bands at 1643 cm-1and 3290 cm-1in the FTIR spectra of the model compounds is given.Both bands are the hydrogen-bonded urea carbonyl and urea NH groups with the form of planarly bifurcated hydrogen bonds in the microcrystals,respectively.Melting points of the model compounds are almost the same as the change of average degree of polymerization by DSC experiments.

Key words: DiethyItoluene diamine, 4,4'-Diphenylmethane diisocyanate, Hydrogen bond, Microcrystal, Thermal analysis

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