聚酯型可降解水性聚氨酯的合成及表征

以聚己二酸乙二醇-1，4-丁二醇酯二醇（PBA ）为软段，以二羟基丙酸（DM PA ）为亲水扩链剂，合成水性聚氨酯（WPU ）预聚体，通过三元共聚硅油（S ）接枝改性制备了系列WPU 乳液。采用红外光谱（FT-IR）、水接触角、水降解性、耐水实验等对WPU 结构和性能进行表征。结果表明，聚氨酯胶膜的耐水性和水接触角随着S含量的增大而提高；胶膜水降解速率随着DM PA 含量的增加而提高。应用到羊绒织物上，使得羊绒织物的抗起毛起球性能得到改善。

Synthesis and characterization of the biodegradable polyester polyurethane waterborne

Polyethylene-1 ,4-buthylene adipateglycol（PBA） was used as soft segment and the dihydroxy acid （DMPA） was used as hydrophilic chain extender to prepare the waterborne polyurethane （WPU） prepolymer body ,which was modified by the silicone terpolymer （S） to make a series of WPU emulsion . Through Fourier transform infrared spectroscopy （FT-IR） ,water contact angle and water degradation , water testing ,the structure and properties of the WPU were characterized .The results show that the water resistance of the polyurethane film and the water contact angle increased with the increasment of the content of S ,the degradation rate of the film increased with the increasment of the content of di-hydroxy acid DMPA .Applying the waterborne polyurethane （WPU） to the fabric cashmere ,the pilling performance of cashmere fabric improves .