کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5186365 | 1381102 | 2006 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Study of the kinetics of mushroom-to-brush transition of charged polymer chains
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The grafting of thiol-terminated poly[(2-dimethylamino)ethyl methacrylate] (HS-PDMEM) chains to a gold surface from a solution was investigated with quartz crystal microbalance with dissipation (QCM-D) in real time. The frequency and energy dissipation responses revealed a three-regime-kinetics of the grafting. The chains are quickly grafted in regime I forming a random mushroom. In regime II, the grafted chains have a rearrangement and form an ordered mushroom structure. The grafting is accelerated in regime III. As the grafting density increases, the chains form brushes. From regime II to III, the mushroom-to-brush transition occurs. The results were further supported by atomic force microscopy (AFM) imagines.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer - Volume 47, Issue 9, 19 April 2006, Pages 3157-3163
Journal: Polymer - Volume 47, Issue 9, 19 April 2006, Pages 3157-3163
نویسندگان
Guangming Liu, Lifeng Yan, Xi Chen, Guangzhao Zhang,