Superoleophobic Textiles
Abstract
A superoleophobic surface has been achieved by modeling surface morphology and reducing surface energy. A meta-stable Cassie-Baxter model, which describes the transition from a Cassie-Baxter surface to a Wenzel surface caused by the local minimization of surface free energy due to air pockets inside the rough structure, has been used to account for the superoleophobic effect. Under the guidance of AFRL, Natick Soldier RD&EC, and Defense Science and Technology Laboratory (Dstl), we have explored three different techniques to achieve superhydrophobicity and superoleophobicity using nylon/cotton woven fabric (nyco) and hydroentangled nylon nonwoven fabric: pulsed plasma polymerization of fluorodecyl acrylate (PFAC8), microwave-assisted condensation of perfluorodecyltrimethoxysilane (FS), and FS condensation through wet processing. Fabric materials prepared using these three techniques were superhydrophobic and superoleophobic as shown by their very high contact angles for both water and oils. The measured contact angles agree with the predicted values obtained through designing a Cassie-Baxter surface.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 2011
- Accession Number
- ADB374970
Entities
People
- Colin Willis
- Corinne Stone
- Duyanada Satan
- Euigyoung Jeong
- Hoon Joo Lee
- Jimmei Du
- Rahul Saraf
- Stephen Michielsen
Organizations
- North Carolina State University