کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9566739 | 1388371 | 2005 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Structural characteristics of porous polymers treated by freezing with water or acetone
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Structural characteristics of porous polymers treated by freezing with water or acetone Structural characteristics of porous polymers treated by freezing with water or acetone](/preview/png/9566739.png)
چکیده انگلیسی
The pore structure of nine polymers of different origin initial and treated in water and acetone for 24Â h and then frozen by liquid nitrogen for 2Â h was studied using low-temperature nitrogen adsorption. An average increase in pore volume and surface area is approximately 16 and 8%, respectively, after freezing with water and 19 and 8%, respectively, after treatment with acetone. However, for some samples, this effect is negative but for others, structural changes are significantly greater (up to 106%) than the average one. Certain treated polymers are characterized by shifted pore size distribution which is also accompanied by displacement of nitrogen adsorption energy distribution.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 252, Issue 3, 31 October 2005, Pages 612-618
Journal: Applied Surface Science - Volume 252, Issue 3, 31 October 2005, Pages 612-618
نویسندگان
V.M. Gun'ko, R. Leboda, J. Skubiszewska-ZiÄba, B. Gawdzik, B. Charmas,