羧基改性聚硅氧烷的合成及其在纤维表面的成膜性研究

In this paper, a carboxyl alkyl modified polysiloxane（CAS-2）was prepared by modification of γ-aminopropyl polysiloxane(ASO-2) with cis-butenedioic anhydride. Chemical structure of the synthesized polysiloxane was characterized by infrared spectrum. Then, the morphology and surface properties of CAS-2 film immobilized on fiber substrates were investigated and characterized by field emission scanning electron microscope (FESEM), attenuated total reflection Fourier transform infrared spectroscopy (ATR/FT-IR), X-ray photoelectron spectroscopy (XPS) and other instruments. As the amplification was more than 20000 times, CAS was found to form a relatively smooth film on the treated fabric,which showed some hydrophilicity according to the application experiments . ATR and XPS spectra indicated that there were Si, N, O, C four elements clearly on the treated fiber surface. In addition, the cotton fabric treated by CAS-2 exhibits an improved wettability and a good whiteness.