کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5189424 | 1381184 | 2006 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
One-step synthesis of dextran-based stable nanoparticles assisted by self-assembly
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
We present a facile method to prepare stabilized nanoparticles with pH-sensitivity and controllable dimension directly from dextran and two kinds of monomers. The synthesis was realized by a self-assembly assisted graft copolymerization of AA from dextran under the presence of crosslinker-N,Nâ²-methylene bisacrylamide. This approach was characterized as organic solvent free, surfactant free and comparatively high solid contents (â¼40Â mg/ml). The polymerization of AA was confirmed by FT-IR, and TGA analysis. The resultant nanoparticles were studied by TEM, AFM, SEM, DLS and zeta-potential measurements. It was found that the size of resultant dextran-based nanoparticles ranges from 40 to 140Â nm, and depends greatly on RGM [(glucose unit)/AA (mol:mol)] during polymerization. Besides, the nanoparticles have obvious pH-sensitivity because of the presence of carboxy groups in the nanoparticles.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer - Volume 47, Issue 2, 13 January 2006, Pages 728-734
Journal: Polymer - Volume 47, Issue 2, 13 January 2006, Pages 728-734
نویسندگان
Minhua Tang, Hongjing Dou, Kang Sun,