کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7832285 | 1503292 | 2007 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Dielectric Relaxation Properties of Alcohols and Acrylic Esters
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Dielectric Relaxation Properties of Alcohols and Acrylic Esters Dielectric Relaxation Properties of Alcohols and Acrylic Esters](/preview/png/7832285.png)
چکیده انگلیسی
Dielectric relaxation of alcohols (1-propanol, 1-butanol, sec-butanol, tert-butanol, 1-pentanol, 1-heptanol, 1-octanol, and 1-decanol) with acrylic esters (methyl methacrylate, ethyl methacrylate, and butyl methacrylate) at 9.84 GHz was studied in n-heptane at 298 K. The result showed that 1:1 complex was predominant in these systems. The relaxation time showed a linear dependence with alkyl chain length of both alcohols and acrylic esters, but the dielectric constant showed a reverse trend. A comparative study of the free energy of activation for the dielectric relaxation and viscous flow suggested that a greater interference by neighboring atoms was observed in the process of viscous flow than in the process of dielectric relaxation, as the latter involved the rotational form of motion, whereas the viscous flow involved both rotational and translational forms of motion.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Acta Physico-Chimica Sinica - Volume 23, Issue 1, January 2007, Pages 50-55
Journal: Acta Physico-Chimica Sinica - Volume 23, Issue 1, January 2007, Pages 50-55
نویسندگان
K. Dharmalingam, K. Ramachandran, P. Sivagurunathan, G.M. Kalamse,