کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10378536 | 880757 | 2005 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Soap-free synthesis for producing highly monodisperse, micrometer-sized polystyrene particles up to 6 μm
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
شیمی کلوئیدی و سطحی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Soap-free synthesis for producing highly monodisperse, micrometer-sized polystyrene particles up to 6 μm Soap-free synthesis for producing highly monodisperse, micrometer-sized polystyrene particles up to 6 μm](/preview/png/10378536.png)
چکیده انگلیسی
A soap-free emulsion polymerization method with the use of an amphoteric initiator, currently proposed by the authors for producing highly monodisperse, micrometer-sized polymer particles, was examined in the polymerization of styrene with a 2,2â²-azobis [N-(2-carboxyethyl)-2-2-methylpropionamidine] hydrate initiator and an NH4OH/NH4Cl pH buffer. The pH buffer was used to control the electric surface potential of particles to maintain a stable dispersion of particles and to prevent generation of new particles during the polymerization. Addition of monomer to the reaction system during polymerization could enlarge the average size of polymer particles to 5.7 μm with a coefficient of variation of 1.5%, which is much less than the standard criteria of monodispersity, 10%.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Colloid and Interface Science - Volume 281, Issue 1, 1 January 2005, Pages 249-252
Journal: Journal of Colloid and Interface Science - Volume 281, Issue 1, 1 January 2005, Pages 249-252
نویسندگان
Yasuyuki Yamada, Tatsuro Sakamoto, Shunchao Gu, Mikio Konno,