23 Jul Polydopamine/titanium dioxide double-layer composite film and preparation method thereof
Abstract
The invention discloses a preparation method of a polydopamine/titanium dioxide double-layer composite film. The method includes the steps of: 1) adding dopamine hydrochloride into deionized water to obtain a solution A; 2) mixing TiO2 hydrosol with part of the solution A to obtain a solution B; 3) adding a clean substrate into the remaining solution A to perform soaking so as to obtain a polydopamine film on the substrate; and 4) conducting spin-coating of the solution B on the polydopamine film, and performing drying. The preparation method provided by the invention has the characteristics of low cost, simple process, and easy realization, the prepared polydopamine/titanium dioxide double-layer composite film has good biocompatibility, and the TiO2 nanoparticles in the film are dispersed evenly. The polydopamine/titanium dioxide double-layer composite film has strong binding force with the substrate and has certain photo-responsiveness, and can be applied to the fields of biological tissue engineering, photocatalyts and other fields.
Year: 2016
Country: CN
Doc No: 105833916