Preparation of a superhydrophobic rough surface

• Published in: Journal of polymer science. Part B, Polymer physics Vol. 45; no. 3; pp. 253 - 261
• Main Authors: Lee, Hoon Joo, Michielsen, Stephen
• Format: Journal Article
• Language: English
• Published: Hoboken Wiley Subscription Services, Inc., A Wiley Company 01.02.2007; Wiley
• Subjects: 1H,1H‐perfluorooctylamine; 1H-perfluorooctylamine; Applied sciences; Coating, metallization, dyeing; contact angles; Exact sciences and technology; fibers; high performance polymers; Machinery and processing; nylon-6; nylon‐6,6; Plastics; polyamides; Polymer industry, paints, wood; superhydrophobic; surface tension; surfaces; Technology of polymers; Short fiber; Surface reaction; fibers; Hydrophobization; Synthetic fiber; Hydrophobicity; Amidation; Flocking; polyamides; 1H,1H- perfluorooctylamine; surfaces; nylon-6,6; Surface properties; Amide 66 polymer; superhydrophobic; films; Fluorine containing polymer; Ester polymer; contact angles; Experimental study; surface tension; Acrylamide derivative polymer; Surface treatment; Chemical coupling; Chemical modification; Morphology; Acrylic acid polymer; high performance polymers; Woven material; Primary amine
• ISSN: 0887-6266; 1099-0488
• DOI: 10.1002/polb.21036

The relationship between the contact angles, surface tension, and surface roughness is reviewed. Numerical formulas related to the superhydrophobic rough surfaces of polymers are predicted with two approaches, the Wenzel and Cassie–Baxter models. With these models as a guide, an artificial superhydrophobic surface is created. Rough nylon surfaces mimicking the lotus leaf are created by the coating of a polyester surface with nylon‐6,6 short fibers via the flocking process. Poly(acrylic acid) chains aregrafted onto nylon‐6,6 surfaces, and this is followed by the grafting of 1H,1H‐perfluorooctylamine onto the poly(acrylic acid) chains. Water contact angles as high as 178° are achieved. © 2006 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 45: 253–261, 2007.