کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1465058 | 989679 | 2008 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of triblock copolymer non-ionic surfactants on the rheology of 3Â mol% yttria stabilised zirconia nanosuspensions
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Effect of triblock copolymer non-ionic surfactants on the rheology of 3Â mol% yttria stabilised zirconia nanosuspensions Effect of triblock copolymer non-ionic surfactants on the rheology of 3Â mol% yttria stabilised zirconia nanosuspensions](/preview/png/1465058.png)
چکیده انگلیسی
The effect of three different molecular weights of a triblock copolymer non-ionic surfactant composed of poly(ethylene oxide) and poly(propylene oxide) have been investigated on the zeta potential, stability and rheology of a commercial nanosuspension of 3Â mol% yttria stabilised zirconia (3YSZ). Whilst the surfactants showed some evidence of being adsorbed onto the nanoparticle surfaces, it was in insufficient quantities to achieve complete coverage and measurement of the total organic carbon content suggested that the bulk of the surfactants remained in the liquid medium. As a result, there was only a small effect on the zeta potential. Nevertheless, the stability of the suspension was not affected up to solids contents as high as 54Â wt%. Whilst the viscosity of the nanosuspension increased slightly with increasing surfactant concentration due to the presence of the polymer molecules, for the lowest molecular weight surfactant the effect was relatively small. Finally, it was observed that if the ionic strength of the suspension was reduced via the removal of free electrolytes in the suspension by dialysis, the viscosity decreased significantly. The reverse behaviour was also observed when extra NH4Cl electrolyte was added to the nanosuspension.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 34, Issue 2, March 2008, Pages 293-297
Journal: Ceramics International - Volume 34, Issue 2, March 2008, Pages 293-297
نویسندگان
Yuncheng Liang, Jon Binner,