Journal
POLYMER
Volume 47, Issue 20, Pages 7095-7102Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.polymer.2006.08.019
Keywords
polystyrene; electrospinning; wettability
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Polystyrene (PS) surfaces with various morphologies have been produced by electrospinning or electrospraying, such as beads with different sizes and shapes, bead-on-string structures with different aspect ratios of the beads and fibers with different diameters and shapes. Both the solution properties and the electrospinning conditions affected the PS surface morphology obtained. The results of water contact angle (CA) measurement indicated that the surface morphology could affect the wettability distinctively. It was found that CA values of PS surfaces comprised merely fibers were in the range of 140 degrees-150 degrees. The CA values of PS surfaces comprised bead-on-string structures were usually about 150 degrees. However, the CA values of PS surfaces consisted of particles could reach up to 160 degrees, which shows a superhydrophobic property. A bilayer fibers-on-beads surface was verified to be stable and superhydrophobic. (c) 2006 Elsevier Ltd. All rights reserved.
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