کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
596118 | 1454035 | 2009 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
pH-responsive behavior of hydrogel microspheres altered by layer-by-layer assembly of polyelectrolytes
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
شیمی کلوئیدی و سطحی
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چکیده انگلیسی
We used the layer-by-layer method and an anionic microgel as a substrate to study the influence of consecutive polyelectrolyte adsorption treatment on the pH-responsive changes in the size of the microgel. Treatments with poly(allylamine hydrochloride) and branched poly(ethyleneimine), which penetrated the microgel, led to the formation of a “complex shell” and the behavior analogous to that of an amphoteric microgel, respectively. In contrast, high molecular weight chitosan adsorbed almost at the edge of the microgel surface; and the resultant microgel maintained nearly the same pH-response as the original microgel. This study shows that the pH-response of the microgel can be controlled by the type of polyelectrolytes adsorbed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Colloids and Surfaces A: Physicochemical and Engineering Aspects - Volume 337, Issues 1–3, 1 April 2009, Pages 159–163
Journal: Colloids and Surfaces A: Physicochemical and Engineering Aspects - Volume 337, Issues 1–3, 1 April 2009, Pages 159–163
نویسندگان
Akihiro Fujii, Tatsuo Maruyama, Tomohiro Sotani, Yoshikage Ohmukai, Hideto Matsuyama,