کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7900178 | 1510364 | 2018 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Dielectric relaxation of fullerene C60-containing nanocomposites based on poly(phenylene oxide)
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Dielectric relaxation of fullerene C60-containing nanocomposites based on poly(phenylene oxide) Dielectric relaxation of fullerene C60-containing nanocomposites based on poly(phenylene oxide)](/preview/png/7900178.png)
چکیده انگلیسی
Molecular mobility of nanocomposites based on poly(phenylene oxide) (PPO) containing 1, 2, 4 and 8â¯wt% of C60 fullerenes was studied by dielectric spectroscopy. In all samples, two relaxation processes were present and caused by polarization of the single polar O group located between phenyl rings. This polarization includes two stages with the first stage (occurring in the glassy state) is caused by rotation of phenyl rings and the adjacent polar O groups by small angles that results in the local β process. The second stage (occurring at temperatures exceeding the glass transition temperature Tg) involves segmental mobility and leads to emergence of the α process. Molecular mobility in the region of the β process varies slightly with C60 concentration. In the case of the α process, molecular mobility changes non-monotonically with increasing fullerene concentration.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Non-Crystalline Solids - Volume 483, 1 March 2018, Pages 99-105
Journal: Journal of Non-Crystalline Solids - Volume 483, 1 March 2018, Pages 99-105
نویسندگان
Natalia A. Nikonorova, Galina A. Polotskaya, Alexey A. Kononov, Brian R. Hinderliter, Kirill L. Levine, Rene A. Castro,