23 Jul Method for preparing PLA (Polylactic Acid) super-hydrophobic film with controlled adhesive force by utilizing solvent-non-solvent assisted micro-phase separation method
Abstract
The invention discloses a method for preparing a PLA (Polylactic Acid) super-hydrophobic film with controlled adhesive force by utilizing a solvent-non-solvent assisted micro-phase separation method. The method comprises the following steps: 1) preparing coating solutions: firstly, adding polylactic acid into a good solvent to obtain polylactic acid solutions, and adding a mixed non-solvent into the polylactic acid solutions to be mixed to prepare the coating solutions; 2) coating the coating solutions obtained in the step 1) to a polylactic acid substrate, drying and stripping to obtain the PLA super-hydrophobic film. According to the method disclosed by the invention, the defects of the modification of the added hardly biodegradable low surface energy materials and cumbersome preparation process are avoided, and large-scale production and manufacturing are easily realized. The preparation process disclosed by the invention has the characteristics of simple operation, low cost and the like; meanwhile, the prepared super-hydrophobic surface with the controlled adhesive force has the advantages of good biological and environmental compatibility, and can be widely applied to the technical fields of micro-fluid, biological tissue engineering, self-cleaning, haze prevention, special printing and textiles and the like.
Year: 2017
Country: CN
Doc No: 107090087