Electric field manipulation of charged copolymer worm micelles.
Manipulation of diblock copolymer worm micelles by external electric fields is visualized by fluorescence microscopy in dilute, aqueous solution. Hydrodynamic coupling of the poly(acrylic acid)-(1,4)-polybutadiene (PAA-PBD) worm motion to the electric field and the effective stiffening of the worms in an oscillating electric field are demonstrated. A brief discussion on using this technique to estimate the rheological properties of wormlike micelles is presented.
Graduate Group in Physics, Chemical & Biomolecular Engineering, and The Laboratory for Research on the Structure of Matter, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA.
Kandaswamy
K
Vijayan
Yan
Y
Geng
Dennis
D
Discher
D002070:Butadienes / Q000737:chemistry*; D020724:Elastomers / Q000737:chemistry*; D004574:Electromagnetic Fields; D008823:Micelles; D008856:Microscopy, Fluorescence; D011108:Polymers / Q000737:chemistry*; D011109:Polymethacrylic Acids / Q000737:chemistry*; D012212:Rheology; D013499:Surface Properties; D013501:Surface-Active Agents / Q000737:chemistry; D014867:Water / Q000737:chemistry*
D002070:Butadienes; D020724:Elastomers; D008823:Micelles; D011108:Polymers; D011109:Polymethacrylic Acids; D013501:Surface-Active Agents; D014867:Water; C028834:polybutadiene