کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
612938 | 880710 | 2006 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The microwave absorption of emulsions containing aqueous micro- and nanodroplets: A means to optimize microwave heating
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
شیمی کلوئیدی و سطحی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: The microwave absorption of emulsions containing aqueous micro- and nanodroplets: A means to optimize microwave heating The microwave absorption of emulsions containing aqueous micro- and nanodroplets: A means to optimize microwave heating](/preview/png/612938.png)
چکیده انگلیسی
The microwave absorption at frequencies between 10 MHz and 4 GHz is measured for aqueous brine droplets dispersed in a dielectric medium (ε′=2.0ε′=2.0). By varying the size of the droplets, ion type and ion concentration, it is found that the microwave absorption goes through a maximum which depends on the type of ions and their concentration. The absorption process is attributed to the polarization of the microdroplets through surface charges. Means to optimize microwave heating in emulsions is discussed.
The dielectric relaxation of water-in-oil droplets was analyzed in dependence of droplet size and salt content. Strong surface polarization was found for droplets in the micrometer range.Figure optionsDownload as PowerPoint slide
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Colloid and Interface Science - Volume 302, Issue 2, 15 October 2006, Pages 651–657
Journal: Journal of Colloid and Interface Science - Volume 302, Issue 2, 15 October 2006, Pages 651–657
نویسندگان
Christian Holtze, R. Sivaramakrishnan, Markus Antonietti, J. Tsuwi, Friedrich Kremer, Klaus D. Kramer,