کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5210559 | 1382901 | 2011 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Synthesis and characterization of magnetic Fe3O4-silica-poly(γ-benzyl-l-glutamate) composite microspheres
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
This article reports a novel type of composite microspheres showing magnetic properties. The composite microspheres consist of Fe3O4, silica, and poly(γ-benzyl-l-glutamate) (PBLG). For preparing such composite microspheres, Fe3O4 nanoparticles were fabricated by the solvothermal method and then coated with a silica shell by tetraethoxysilane. Subsequently, amino groups were introduced on the above Fe3O4-silica spheres by using 3-aminopropyltriethoxysilane. Finally, the obtained spheres were used as initiator for polymerizing γ-benzyl-l-glutamate N-carboxyanhydride (BLG-NCA), providing the anticipated magnetic composite microspheres. Such microspheres were characterized by FT-IR, TEM, large-angle powder XRD, and vibrating sample magnetometer. FT-IR spectra demonstrated that the PBLG chains adopted α-helical conformations. The magnetic composite microspheres showed a high saturation magnetization of 34.1 emu/g and the expected rapid magnetic responsivity.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Reactive and Functional Polymers - Volume 71, Issue 10, October 2011, Pages 1040-1044
Journal: Reactive and Functional Polymers - Volume 71, Issue 10, October 2011, Pages 1040-1044
نویسندگان
Dong Liu, Yi Li, Jianping Deng, Wantai Yang,