کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1652459 | 1517340 | 2007 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Conductive composites of polypyrrole and sulfonic-functionalized silica spheres
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Colloidal silica spheres were sulfonic-functionalized by the pretreatment of a mercapto-containing silane coupling agent and further oxidation. Starting off with these functionalized silica spheres, we successfully fabricated a silica–polypyrrole (PPy) core–shell nanostructure. FT-IR and TGA were used to characterize the resulting composite. Because of the complete coating of polypyrrole, the electric conductivity of the composite was as high as 12 S/cm, three orders of magnitude higher than that of conventional silica–polypyrrole composites. The colloidal stability can be improved greatly by introducing a common steric agent poly(N-vinylpyrrolidone) (PVP) into the system.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Letters - Volume 61, Issues 14–15, June 2007, Pages 3142–3145
Journal: Materials Letters - Volume 61, Issues 14–15, June 2007, Pages 3142–3145
نویسندگان
Tingyang Dai, Xiaoming Yang, Yun Lu,