| Autor: |
Thomas, R. R., Anton, D. R., Graham, W. F., Darmon, M. J., Sauer, B. B., Stika, K. M., Swartzfager, D. G. |
| Zdroj: |
Macromolecules; May 19, 1997, Vol. 30 Issue: 10 p2883-2890, 8p |
| Abstrakt: |
A series of novel polymers have been prepared by free radical solution polymerization of a variety of hydrocarbon monomers with the (perfluoroalkyl)ethyl methacrylate monomer H2C&dbd;C(CH3)CO2(CH2)2(CF2)nF, 1 (&nmacr; ≈ 7.7). Polymers prepared using two different methods of feeding 1 into the reaction mass are discussed. Through a judicious choice of reaction conditions, some control of polymer architecture was exhibited. The resultant (perfluoroalkyl)ethyl methacrylate-containing acrylic polymers were shown to be quite surface active in the solid state. The magnitude of surface activity depends on the monomer 1 feed method. The polymers were formulated into thin films and applied to a variety of surfaces. With levels at 1.5 wt % of 1, water and oil repellent surfaces were created. Water contact angles (advancing) of ~80−115° and hexadecane contact angles (advancing) of ~60−70° were observed routinely. In addition, it was observed that the concentration profile of fluorine in the films exhibited a steep gradient normal to the surface when studied by angle-dependent ESCA and secondary ion mass spectroscopic depth profiling. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
|
