کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5187352 | 1381127 | 2008 | 14 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Well-defined core-shell structures based on silsesquioxane microgels: Grafting of polystyrene via ATRP and product characterization
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
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چکیده انگلیسی
Silsesquioxane microgel nanoparticles characterized by low diameters (below 30Â nm) and reduced polydispersity can be produced in an acid-catalyzed sol-gel process in an aqueous microemulsion. Suitable surface modification of such structures leads to macroinitiators for atom-transfer radical polymerization (ATRP). This polymerization method was applied in order to graft polystyrene chains onto the surface of the microgels. Well-defined structures exhibiting a core-shell architecture were produced with the Mw of grafted polymers ranging from 8.5 to about 30Â kg/mol. The products were extensively characterized with light scattering, X-ray scattering, thermal analysis (TGA/DSC) and microscopy (TEM/SEM) to obtain information on parameters characterizing polystyrene brush. Polymer-grafted nanoparticles will be used for the modification of homopolymer and block copolymer matrices.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer - Volume 49, Issue 4, 18 February 2008, Pages 843-856
Journal: Polymer - Volume 49, Issue 4, 18 February 2008, Pages 843-856
نویسندگان
Leszek Jakuczek, Jochen S. Gutmann, Beate Müller, Christine Rosenauer, Danuta Å»uchowska,