کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5361137 | 1388270 | 2009 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Preparation of chitosan-ethylenediaminetetraacetate-enwrapped magnetic CoFe2O4 nanoparticles via zero-length emulsion crosslinking method
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
A kind of magnetic multiple functional groups nanocomposites, chitosan-ethylenediaminetetraacetate (EDTA)-enwrapped CoFe2O4 nanoparticles, i.e. CoFe2O4@chitosan-EDTA nanocomposites were synthesized by a facile zero-length emulsion crosslinking process. In this method, CoFe2O4 was used as magnetic core, and 1-ethyl-3-(3-dimethylminopropyl) carbodiimide hydrochloride (EDAC) was used as a crosslinker, integrating amino group of chitosan and carboxyl group of EDTA. Determination of amino groups in chitosan modified by EDAC-activated EDTA was carried out through the trinitrobenzenesulfonic acid (TNBS) method. The as-prepared magnetic nanocomposites were characterized by XRD, FT-IR, XPS, SEM, EDS, TEM, SAED and vibrating sample magnetometer (VSM), and the results showed that the as-prepared CoFe2O4@chitosan-EDTA nanocomposites have good dispersibility, spherical shape and enough magnetization. The method proposed can be extended to fabricate other magnetic nanocomposites possessed amino and carboxyl groups.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 256, Issue 1, 15 October 2009, Pages 27-32
Journal: Applied Surface Science - Volume 256, Issue 1, 15 October 2009, Pages 27-32
نویسندگان
Runhua Qin, Fengsheng Li, Mingyue Chen, Wei Jiang,