نتایج جستجو برای: reversible chain transfer catalyzed polymerization

تعداد نتایج: 687415  

Journal: :Chemical Papers 2023

A series of mesoporous silica (MS) materials, including rod-like and spherical SBA-15, MCM-41, MCM-48, was successfully synthesized modified by silane coupling agent γ-aminopropyltriethoxysilane. The MS utilized as a microreactor for solution reversible addition–fragmentation transfer (RAFT) polymerization methyl methacrylate (MMA) using xanthate chain azodiisobutyronitrile an initiator. Notabl...

Journal: :Advanced Engineering Materials 2023

3D printing via reversible addition‐fragmentation chain transfer (RAFT) polymerization has been recently developed to expand the scope of technologies. A potentially high‐impact but relatively unexplored opportunity that can be provided by RAFT‐mediated is a pathway toward personalized medicine through manufacturing bespoke drug delivery systems (DDSs). Herein, drug‐eluting with precise geometr...

Journal: :Journal of the American Chemical Society 2009
Yan Xia Andrew J Boydston Yefeng Yao Julia A Kornfield Irina A Gorodetskaya Hans W Spiess Robert H Grubbs

Ring-expansion metathesis polymerization (REMP) mediated by recently developed cyclic Ru catalysts has been studied in detail with a focus on the polymer products obtained under varied reaction conditions and catalyst architectures. Depending upon the nature of the catalyst structure, two distinct molecular weight evolutions were observed. Polymerization conducted with catalysts bearing six-car...

2011
Siqing Cheng Per B Zetterlund S. Cheng P. B. Zetterlund

Implementation of controlled/living radical polymerization in miniemulsion (typically with oil droplet diameter of 20-500 nm) for synthesis of well-defined, polymeric nanoparticles is of particular interest as miniemulsions possess the inherent advantage that ideally each monomer droplet is transformed into a polymer particles(Zetterlund et al., 2008). However, the high energy requirement for m...

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