Injector cartridge with improved lubricity

摘要

An inorganic-organic hybrid coating applied to a polymer and method for forming same to provide improved hydrophilicity and lubricity to the surface of the polymer. The hydrophilic coating is on the order of one micron thick, as is formed by activating the surface of the polymer, reacting the activated surface of the polymer with a Lewis acid metallic composition, and then quenching the coating in salt solution having a pH>7.2 at a temperature above the glass transition temperature (Tg) of the polymer.

主权项

1. A method for forming a wettable inorganic-organic hybrid coating on the surface of a polycarbonate construct to improve the lubricity of the surface of the polycarbonate construct, comprising:
activating the surface of a polycarbonate construct by placing the construct in an activation solution and heating the solution at a selected activation temperature for a selected activation time; drying the activated construct; coating the activated construct by immersing the construct in a coating solution and heating the solution at a selected coating temperature for a selected coating time to form an inorganic hybrid coating on the surface of the construct; drying the coated construct; and quenching the coated construct by immersing the coated construct in a quenching solution contained within an autoclavable vessel and autoclaving the coated construct for a selected autoclaving time at a selected autoclaving temperature, the surface of the quenched coated construct having increased wettability and a decreased coefficient of friction compared to the wettability and coefficient of friction of an uncoated surface of a polycarbonate construct.