کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
594872 1453991 2011 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Fabrication of semiconducting polyaniline/nano-silica nanocomposite particles and their enhanced electrorheological and dielectric characteristics
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی شیمی کلوئیدی و سطحی
پیش نمایش صفحه اول مقاله
Fabrication of semiconducting polyaniline/nano-silica nanocomposite particles and their enhanced electrorheological and dielectric characteristics
چکیده انگلیسی

As a new electroresponsive electrorheological (ER) polymer/inorganic nanocomposite material, polyaniline (PANI)/nano-silica nanocomposite was synthesized via an in situ chemical oxidative polymerization method. Morphology and thermal property of the synthesized nanocomposite were examined by scanning electron microscope (SEM), transmission electron microscopy (TEM) and thermogravimetric analysis (TGA). In comparison with pure PANI, the PANI/nano-silica nanocomposite based ER fluid dispersed in silicone oil exhibited improved ER performance with a higher yield stress. The increment of storage modulus with electric field strength was also observed via a vertical oscillation rheometer. These ER characteristics were found to be well correlated with dielectric properties of the ER fluids measured using an LCR meter.

Figure optionsDownload as PowerPoint slideHighlights
► Hydrophilic nano-silica particle was adopted to fabricate its nanocomposite with polyaniline.
► Nanocomposite shows a typical electrorheological behavior under electric field.
► Electrorheological characteristics were well correlated to their dielectric spectra.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Colloids and Surfaces A: Physicochemical and Engineering Aspects - Volume 381, Issues 1–3, 20 May 2011, Pages 17–22
نویسندگان
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