کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1486670 | 1510562 | 2005 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Structure of bioactive mixed polymer/colloid aerogels
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Structure of bioactive mixed polymer/colloid aerogels Structure of bioactive mixed polymer/colloid aerogels](/preview/png/1486670.png)
چکیده انگلیسی
The structure of polymer/colloid mixed silica sono-aerogels has been studied by SAXS, N2 adsorption-desorption and Hg porosimetry. The system is described as a composite in which the polymeric phase (sonogel) is the matrix. The structure of this phase prepared with ultrasounds is very fine consisting in aggregates of â¼5Â nm radius formed by elementary particles of 1Â nm radius. Including Ca(II) into the silica atomic network causes enlarging the average size of the particle more than three times with respect to its size in its pure silica counterpart. The stiffness increases as well by 50%. The size of the particles and pores is also affected by the ultrasound dose applied; the higher for the larger the particles. On the other hand, a low dose produces a rough particle surface.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Non-Crystalline Solids - Volume 351, Issues 40â42, 15 October 2005, Pages 3347-3355
Journal: Journal of Non-Crystalline Solids - Volume 351, Issues 40â42, 15 October 2005, Pages 3347-3355
نویسندگان
Luis Esquivias, VÃctor Morales-Flórez, Manuel Piñero, Nicolás de la Rosa-Fox,