کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
232312 | 1427472 | 2007 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Preparation of open cellular PMMA microspheres by supercritical carbon dioxide foaming
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
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چکیده انگلیسی
Poly(methyl methacrylate) (PMMA) microspheres with a nonporous skin and open cellular core structure were obtained by supercritical carbon dioxide foaming via a pressure quench method. The microspheres were characterized by particle size analyzer, scanning electron microscopy (SEM), and transmission electron microscopy (TEM). Effects of foaming conditions such as CO2 pressure, temperature, and cell growth time on the particle size, size distribution, and morphology of the PMMA microspheres were investigated in detail. It was found that higher foaming temperature and higher pressure resulted in an increase of particle size. However, a longer cell growth time caused a decrease in size of the foamed PMMA microspheres.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: The Journal of Supercritical Fluids - Volume 40, Issue 2, March 2007, Pages 323–329
Journal: The Journal of Supercritical Fluids - Volume 40, Issue 2, March 2007, Pages 323–329
نویسندگان
Shirong Huang, Guozhong Wu, Shimou Chen,