COLL Ramanathan Nagarajan  Sunday, March 16, 2014 

69 - Omniphobic slippery coatings based on lubricant-infused porous polyelectrolyte multilayers with layer-by-layer assembly

Xiayun Huang1, sherry.huangxiayun@gmail.com, James D Chrisman1, Nicole S Zacharia1,2,3. (1) Department of Mechanical Engineering, Texas A&M University, College Station, Texas 77843, United States, (2) Department of Materials Science and Engineering, Texas A&M University, College Station, Texas 77843, United States, (3) Department of Polymer Engineering, The University of Akron, Akron, Ohio 44325, United States

Omniphobic and slippery coatings from lubricant infused textured surfaces have recently been shown to have superior properties including low contact angle hysteresis and low sliding angles. Here, we present a new approach to the fabrication of these omniphobic slippery surfaces by using polyelectrolyte multilayers assembled by the layer-by-layer technique. Water soluble weak polyelectrolytes, branched poly(ethyleneimine) and poly(acrylic acid), were used as the basis for the polyelectrolyte multilayer structures. Due to the responsive change density variation to the pH of surrounding environment, the honeycomb-like microporous structures can be achieved through staged acid treatment. The omniphobic slippery surface would be prepared by infusing a fluorinated lubricant into a porous polyelectrolyte multilayer. These surfaces repel water and decane with sliding angles as low as 3°. One advantage of polyelectrolyte multilayers is the ease with which they can coat non-planar surfaces, such as glass tube.





Sunday, March 16, 2014 11:30 AM
Hydrophobic Surfaces (08:30 AM - 12:30 PM)
Location: Dallas Convention Center
Room: D170

 

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