کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5189947 | 1381194 | 2007 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Polymethylene-block-poly(dimethyl siloxane)-block-polymethylene nanoaggregates in toluene at room temperature
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Aggregates of a polymethylene-block-poly(dimethyl siloxane)-block-polymethylene (PM-PDMS-PM) sample were prepared in toluene by cooling down a toluene solution of the sample slowly from 105 °C to room temperature. Atomic force microscopic (AFM) and electron microscopic (EM) studies revealed that the aggregates included triblock crystal plates with sizes of upto tens of micrometers and PM-PDMS-PM nanodiscs. Surprisingly and interestingly, we discovered that the topographic images of the nanodiscs obtained by tapping-mode AFM changed from nanodiscs at light tapping to strikingly beautiful nanodonuts at moderate tapping and then filled nanodonuts at heavy tapping. Justification for such observations is provided.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer - Volume 48, Issue 14, 29 June 2007, Pages 4123-4129
Journal: Polymer - Volume 48, Issue 14, 29 June 2007, Pages 4123-4129
نویسندگان
Jiandong Wang, J. Hugh Horton, Guojun Liu, Sun-Yeol Lee, Kenneth J. Shea,