Simple preparation of new hydrophobic composite materials

More recently, researchers have created a hydrophobic composite of polystyrene-acrylic/SiO2 containing fluorosilicon through a combination of physical mixing and sol-gel processes.
new hydrophobic composite (FS-PSA / SiO 2) is prepared by directly physically mixing fluorosilcone-containing poly (styrene-acrylic) latex (FS-PSA) with collide silica. A sol-gel process is performed between silicon dioxide particles and silane alcohol-based groups on the surface of poly (styrene-acrylic) latex to improve the roughness and hydrophobicity of the

. TEM photos show FS-PSA latex with a clear nuclear shell structure. The hydrogen bond between molecules ensures the uniform dispersion of silica particles. The average diameter data show that the co-ion and sol-gel processes have increased the average diameter of composite latex.
the composite film of the sol-gel is rougher
. FTIR and XPS spectroscopy confirm the presence of two Si-O bonds in the composite film, one related to the Si-O base of the gelding silica and the other to the Si-O-Si base obtained from the sol. - Gel process. SEM and AFM images show that the sol-gel process increases the roughness of the composite film. The study found that the water contact angle (WCA) of the compound membrane increased with the increase of co-ionization and sol-gel process. The thermal weight analysis (TGA) curve shows that the FS-PSA/SiO 2 composite film exhibits better thermal stability than the PSA and FS-PSA membranes.
the study was published in the Journal of Coating Technology and Research, September 2019, volume 16, issue 5, pp. 1243-1252.
.