Surface Structure Analysis of Polyacrylate Thin Films

Abstract

The surface contact angles of poly(fluoroalkyl acrylate)s and poly(fluoroalkyl methacrylate)s vary with the cooling mode used after heat treatments. Grazing angle X-ray reflectivity measurement was applied to characterize the surface roughness of polyacrylate thin films on silicon wafers. Surface and interface roughnesses of polyacrylate thin films with large contact angles were measured as 0.7–1.2 nm, which are smaller than roughnesses (1.2–1.8 nm) with small contact angles. It was found that the ordering of side chains in polyacrylate thin films causes the surface to change the contact angles.

Surface properties of urethane coating containing perfluorinated additives

“…Among chemical treatments, fluoro-resin has been widely used as a surface coating material with its water repellent and oil repellent properties due to the low surface tension and low friction coefficient [2][3][4]. So far, several coating materials such as a series of perfluoroalkyl acrylate polymers [5][6][7][8][9][10][11][12][13][14][15][16][17][18] and fluorine modified polyurethane surface modifier [19] have been developed. Although these polymers have low surface tension as well as water-and oilrepellent properties, they showed poor solubility to the general hydrocarbon solvents.…”