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Preferential partition of nanowires in thin films of immiscible polymer blends
Journal article   Peer reviewed

Preferential partition of nanowires in thin films of immiscible polymer blends

Kuen-Hua Wu and Shih-Yuan Lu
Macromolecular Rapid Communications, Vol.27(6), pp.424-429
24/03/2006

Abstract

Morphology Polymer blend Polystyrene PVP Selectivity Silver nanowire Surface modification
The preferential partition of silver nanowires in thin films of polystyrene/poly(vinyl pyrrolidone) (PS/PVP, with a 30/70 weight ratio) Mends, that induces drastic blend morphology variation, is reported. The silver nanowires are fabricated with die anodic aluminum oxide templating method, and have a diameter of 300 ran and length of 10 μm. At a higher nanowire loading of 10 wt.-%, the silver nanowires are entangled and selectively concentrate within the continuous PVP domain. If surface modified by thiols carrying hydrophobic tails, me silver nanowires become hydrophobic and prefer to stay within the discrete hydrophobic PS domains. At a lower nanowire loading of 5 wt.-%, the nanowires are non-entangled and concentrate at regions near the interfaces of the PS and PVP phases, which induces the formation of interconnected PS domains. © 2006 WILEY-VCH Verlag GmbH & Co. KGoA.

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