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将明胶作为皮蛋白的模型化合物与阴离子型聚氨酯水分散液（ＡＰＵ）反应，来探讨聚合物型助剂与皮革在分子水平上的相互作用机理．该文采用紫外可见光谱、红外光谱研究了混合体系对ｐＨ值的依赖性，明胶／ＡＰＵ配比、极性化合物对体系相互作用的影响．
Gelatin was used as a model compound of picoprotein to react with an anionic polyurethane aqueous dispersion (APU) to investigate the molecular interaction mechanism between the polymeric additive and the leather. In this paper, the UV-vis spectra and infrared spectra were used to study the dependence of pH value on the mixture system, the gelatin / APU ratio and the interaction of polar compounds on the system.