کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7832143 | 1503289 | 2007 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Dielectric Relaxation of Methyl Methacrylate and Ethyl Methacrylate on Complexation with Phenols
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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 of Methyl Methacrylate and Ethyl Methacrylate on Complexation with Phenols Dielectric Relaxation of Methyl Methacrylate and Ethyl Methacrylate on Complexation with Phenols](/preview/png/7832143.png)
چکیده انگلیسی
Dielectric absorption studies of H-bonded complexes of methyl methacrylate (MMA) and ethyl methacrylate (EMA) with p-cresol, p-chlorophenol, 2,4-dichlorophenol, and p-bromophenol were studied at microwave frequency of 9.37 GHz in dilute solution of carbon tetrachloride at 308 K. Different dielectric parameters like dielectric constant É, dielectric loss É at microwave frequency, static dielectric constant ε0 and dielectric constant εâ at optical frequency were determined. The validity of the single frequency equation of Higasi et al. for multiple relaxation time Ï(1) was found to be a function of the hydrogen bonding strength of phenolic hydrogen, whereas the group rotation relaxation time Ï(2) was a function of the steric interaction of proton donor. The relaxation time was the maximum at 50:50 (molar ratio) of methacrylates with phenols.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Acta Physico-Chimica Sinica - Volume 23, Issue 4, April 2007, Pages 513-516
Journal: Acta Physico-Chimica Sinica - Volume 23, Issue 4, April 2007, Pages 513-516
نویسندگان
Faize Liakathalikhan, Periyasamy Sivagurunathan,