کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
593953 1453961 2012 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Carbon nanotube coated magnetic carbonyl iron microspheres prepared by solvent casting method and their magneto-responsive characteristics
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی شیمی کلوئیدی و سطحی
پیش نمایش صفحه اول مقاله
Carbon nanotube coated magnetic carbonyl iron microspheres prepared by solvent casting method and their magneto-responsive characteristics
چکیده انگلیسی

In order to improve not only the magnetorheological (MR) properties of soft magnetic carbonyl iron (CI) but also its dispersion stability, we fabricated a dense network of multi-walled carbon nanotubes (MWCNTs) on the surface of CI particles by using 4-aminobenzoic acid as a grafting agent through a two-step method: ultrasonication and solvent casting, based on the self-assembly of MWCNTs which have a similar density to the polymer but better magnetic properties due to the iron catalyst located in the MWCNT. The influence of coating layers on magnetic properties along with MR performance such as yield stress behavior and shear viscosity were investigated by a vibrating sample magnetometer and rotational rheometer. The suspension stability was found to be improved from a Turbiscan test.

Figure optionsDownload as PowerPoint slideHighlights
► MWCNT was coated onto magnetic carbonyl iron via self-assembly forming core/shell structure.
► Ultrasonication was adopted to enhance MWCNT coating.
► Magnetorheological performance along with sedimentation was examined showing improved characteristics.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Colloids and Surfaces A: Physicochemical and Engineering Aspects - Volume 412, 20 October 2012, Pages 47–56
نویسندگان
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