کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9834477 | 1524910 | 2005 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Magnetic polymer nanospheres with high and uniform magnetite content
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Magnetic polymer nanospheres with high and uniform magnetite content were synthesized using a new process based on miniemulsion polymerization, where a stable water-based dispersion of sodium dodecyl sulfate (SDS)/oleic acid bilayer coated magnetite aggregates was first synthesized and mixed with monomer styrene miniemulsion. Then another miniemulsification was performed for the full encapsulation of magnetite into monomer droplets. Subsequent polymerization generated magnetic polymer nanospheres. Extensive characterization of magnetic polymer particles by transmission electron microscopy (TEM), dynamic light scattering (DLS), thermogravimetric analysis (TGA) and Vibrating Sample Magnetometer (VSM) showed that up to 40Â wt% of 8Â nm superparamagnetic magnetite particles could be uniformly encapsulated into polystyrene nanospheres with an average diameter of 80Â nm.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volume 288, March 2005, Pages 403-410
Journal: Journal of Magnetism and Magnetic Materials - Volume 288, March 2005, Pages 403-410
نویسندگان
Weiming Zheng, Feng Gao, Hongchen Gu,