کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1668299 1008865 2011 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Surfactant-controlled shape change of organic droplets using polypyrrole
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
Surfactant-controlled shape change of organic droplets using polypyrrole
چکیده انگلیسی

Control of the shape and position of organic droplets has been investigated using polypyrrole doped with the surfactant dodecylbenzenesulfonate (PPy.DBS). Ex-situ contact angle measurements of electrochemically-reduced PPy.DBS revealed a dramatic increase in wettability compared to the oxidised polymer, attributable to dopant reorientation and cation incorporation during the reduction process. In-situ studies showed that droplets of dichloromethane resting upon PPy.DBS electrodes and immersed in an aqueous electrolyte changed shape dramatically upon electrochemical reduction of the polymer. A mechanism for the unusual and unexpected changes in drop shape is presented. Controlled release of the surfactant dopant into the electrolyte upon reduction of PPy.DBS and subsequent doping of the polymer upon oxidation were found to affect the droplet shape.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Thin Solid Films - Volume 519, Issue 19, 29 July 2011, Pages 6486–6491
نویسندگان
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