کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1384950 982425 2012 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Hydrothermal fabrication, characterization, and biological activity of cellulose/CaCO3 bionanocomposites
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
پیش نمایش صفحه اول مقاله
Hydrothermal fabrication, characterization, and biological activity of cellulose/CaCO3 bionanocomposites
چکیده انگلیسی

Bionanocomposites with the combination of natural polymers and inorganic nanoparticles may induce unique properties and exhibit promising functions for different applications. Herein, we report a hydrothermal route to the preparation of cellulose/CaCO3 bionanocomposites using the cellulose solution, Ca(NO3)2·4H2O and Na2SiO3·9H2O. The cellulose solution was previously prepared by the dissolution of microcrystalline cellulose in NaOH–urea aqueous solution. The urea also acts as the CO32− source for the synthesis of CaCO3. The influences of several reaction parameters, such as the heating time, the heating temperature, and the types of additives on the products were investigated by X-ray powder diffraction, Fourier transform infrared spectrometry, scanning electron microscopy, thermogravimetric analysis, and differential thermal analysis. The experimental results demonstrated that the hydrothermal conditions had an effect on the morphology of the bionanocomposites. Cytotoxicity experiments indicated that the cellulose/CaCO3 bionanocomposites had good biocompatibility, so that the bionanocomposites could be ideal candidate for practical biomedical applications.


► Cellulose/CaCO3 bionanocomposites have been prepared by hydrothermal method.
► The hydrothermal conditions had an effect on the shape of the bionanocomposites.
► The cellulose/CaCO3 bionanocomposites had good biocompatibility.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Carbohydrate Polymers - Volume 88, Issue 1, 17 March 2012, Pages 179–184
نویسندگان
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