Film morphology and orientation of poly(dimethylsiloxane-co-methoxydodecylsiloxane) (DDPS) on different cellulose models

such as natural cotton fiber and the regenerated cellulose substrates

were investigated and studied by atomic force microscope (AFM)

field emission scanning electronic microscope (FESEM)

X-ray photoelectron spectroscope (XPS) and other instruments.Experimental results showed that DDPS formed hydrophobic

macroscopic smooth but actually microscopic inhomogeneous structural films on these cellulose model substrates.The hydrophobic property and characteristic AFM morphology demonstrated that DDPS molecules took such an orientation in forming films on cellulose models so that the Si—CH3 and Si—C12H25 groups pointed outward to the film surface

while the dipolar Si—O bonds pointed to the interface with the cellulose model substrates.