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以分子量分别为 2 0 0和 10 0 0的聚乙二醇 (PEG)与 2 ,4-甲苯二异氰酸酯 (2 ,4-TDI - 10 0 )为主要原料 ,合成了端二异氰酸根聚氨酯预聚体 (OCN -PEU -NCO) ,以不同配比与 β-环糊精 (β -CD)进行交联反应 ,合成了一系列含 β-CD链节的新型聚氨酯交联体 ,并用红外光谱对其网链结构进行了表征。测定了不同 β-CD用量时 ,交联体中的 β-CD含量和在 5 0 %DMF水溶液中的溶胀特性。最后 ,考察了该材料对中性红的包合吸附特性
Poly (ethylene glycol) (PEG) and 2,4-TDI-1O (2, 4-TDI-10 0) with molecular weights of 200 and 1000 as the main raw materials, (OCN-PEU-NCO) were synthesized by cross-linking reaction with β-cyclodextrin (β-CD) in different ratios to synthesize a series of new polyurethane cross-links with β-CD linkages. Its network chain structure was characterized. The β-CD content in the cross-linked product and the swelling behavior in 50% DMF aqueous solution were determined at different amounts of β-CD. Finally, the inclusion and adsorption properties of the material on neutral red were investigated