新型芳香聚脲准轮烷的合成与表征

Synthesis and Characterization of a Novel Aromatic Polyurea Pseudorotaxane

以4,4′-二氨基二苯醚的-βCD包合物和甲苯-2,4-二异氰酸酯为单体,N,N-二甲基乙酰胺为溶剂,在室温合成了聚脲-βCD准轮烷(3a)。采用红外光谱(FT-IR)、热失重(TG)、核磁共振(1H-NMR)和X射线粉末衍射等手段分别对包合物和准轮烷(3a)进行了表征。结果表明,准轮烷(3a)链上-βCD的含量为42.9%(质量分数),热稳定性良好,是一类新颖的准轮烷。

Inclusion complex compound of 4, 4-oxydianiline was reacted with toluene-2, 4- diisocyanate in N, N-dimethylacetamide at room temperature to form a polyurea pseudorotaxanes （3a）.The Inclusion complex and the polymer （3a） were characterized by FT-IR.TGA.^1H-NMR and XRD.The results indicate that the polymer （3a） is a novel pseudorotaxane with good thermal stability and about 42.9 % of β-CD on its chain.