کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
598003 1454078 2007 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Optimized phosphate ester structure for the dispersion of nano-sized barium titanate in proper non-aqueous media
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی شیمی کلوئیدی و سطحی
پیش نمایش صفحه اول مقاله
Optimized phosphate ester structure for the dispersion of nano-sized barium titanate in proper non-aqueous media
چکیده انگلیسی

Suspension stability of nano-sized (50 nm) barium titanate (BaTiO3) with different non-aqueous solvents and phosphate esters has been investigated by means of zeta potential, hydrophilic lipophilic balance (HLB) value, adsorption, sedimentation and viscosity measurements. Without dispersants addition, the proper viscosity of the non-aqueous solvent is an essential dispersion factor for stabilizing the nano-sized BaTiO3 suspensions, such as 1-methoxy-2-propanol. On the other hand, three typical phosphate esters were synthesized and used as dispersants, including mono-alkyl, di-alkyl (Di-), and mono-ethoxy (EO-) type. Due to the soft and appropriate molecular length of ethoxy group, the 2-ethoxy ethyl dihydrogen (1EO-) phosphate esters not only shows the efficient adsorption over the nano-BaTiO3 powders, but also superior dispersion properties in high solid concentration (40 wt.%) status.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Colloids and Surfaces A: Physicochemical and Engineering Aspects - Volume 294, Issues 1–3, 15 February 2007, Pages 212–220
نویسندگان
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