کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
598250 | 1454087 | 2006 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Simple preparation of hemispherical polystyrene particles
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
شیمی کلوئیدی و سطحی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
We show the simple preparation of the hemispherical polymer particles. Submicron sized hemispherical polystyrene particles were prepared by adding a poor solvent (water) into a tetrahydrofran (THF) solution of polystyrene and following evaporation of THF. When the concentration of the polymer solution was higher than 0.4 g/L, spherical particles were formed. On the other hand, the hemispherical nano-particles were formed in the case of the dilute solution whose concentration was lower than 0.2 g/L. Turbidity change of the polymer solution due to THF evaporation starts from the surface of the solution. The light scattering experiment suggests that the hemispherical nano-particles were formed by precipitation at the air/solution interface.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Colloids and Surfaces A: Physicochemical and Engineering Aspects - Volumes 284–285, 15 August 2006, Pages 250–253
Journal: Colloids and Surfaces A: Physicochemical and Engineering Aspects - Volumes 284–285, 15 August 2006, Pages 250–253
نویسندگان
Takeshi Higuchi, Hiroshi Yabu, Masatsugu Shimomura,