کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
144963 438956 2010 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Electrical-driven disaggregation of the two-dimensional assembly of colloidal polymer particles under pulse DC charging
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Electrical-driven disaggregation of the two-dimensional assembly of colloidal polymer particles under pulse DC charging
چکیده انگلیسی

Two-dimensional structures of polymer (polystyrene) colloidal particles were formed on a substrate by electrophoretic deposition in an aqueous suspension. The prepared suspension is stable for a few days; therefore, it was not necessary to place an additional mixing during the deposition process. The particle aggregation/disaggregation formation was observed on the metal surface in order to study the effect of pulse direct current (DC) charging in comparison with conventional DC charging. At the charging frequency of 80 Hz, it was observed that pulse DC charging with a maximum applied voltage of 3.3 V/cm (50% duty cycle) clearly reduced the degree of aggregation of particles having diameters of 50 and 300 nm comparing to those of DC charging. Pulse charging at high frequency is thus found to be more effective in preventing particle aggregation during electrophoretic deposition than conventional DC charging.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Advanced Powder Technology - Volume 21, Issue 5, September 2010, Pages 534–541
نویسندگان
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