Academic Journal
Control of Dispersity and Grafting Density of Particle Brushes by Variation of ATRP Catalyst Concentration
| العنوان: | Control of Dispersity and Grafting Density of Particle Brushes by Variation of ATRP Catalyst Concentration |
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| المؤلفون: | Wang Z., Yan J., Liu T., Wei Q., Li S., Olszewski M., Wu J., Sobieski J., Fantin M., Bockstaller M. R., Matyjaszewski K. |
| المساهمون: | Wang, Z., Yan, J., Liu, T., Wei, Q., Li, S., Olszewski, M., Wu, J., Sobieski, J., Fantin, M., Bockstaller, M. R., Matyjaszewski, K. |
| بيانات النشر: | American Chemical Society |
| سنة النشر: | 2019 |
| المجموعة: | Padua Research Archive (IRIS - Università degli Studi di Padova) |
| الوصف: | Silica particles with grafted poly(methyl methacrylate) brushes, SiO2-g-PMMA, were prepared via activator regeneration by electron transfer (ARGET) atom transfer radical polymerization (ATRP). The grafting density and dispersity of the polymer brushes was tuned by the initial ATRP catalyst concentration ([CuII/L]0). Sparsely grafted particle brushes, which also displayed an anisotropic string-like structure in TEM images, were obtained at very low catalyst concentrations, [CuII/L]0 < 1 ppm. The effect of the initial catalyst concentration on dispersity and initiation efficiency in the particle brush system was similar to that observed in the synthesis of linear PMMA homopolymers. The kinetic study revealed a transition from controlled radical polymerization to a less controlled process at low monomer conversion, when the [CuII/L]0 decreased below about 10 ppm. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| Relation: | info:eu-repo/semantics/altIdentifier/wos/WOS:000477073700017; volume:8; issue:7; firstpage:859; lastpage:864; numberofpages:6; journal:ACS MACRO LETTERS; http://hdl.handle.net/11577/3439820; info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85069827601 |
| DOI: | 10.1021/acsmacrolett.9b00405 |
| الاتاحة: | http://hdl.handle.net/11577/3439820 https://doi.org/10.1021/acsmacrolett.9b00405 |
| رقم الانضمام: | edsbas.9E0FFDC9 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1021/acsmacrolett.9b00405 |
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