Results 91 to 100 of about 319 (137)

Simultaneous EPR and Kinetic Study of Styrene Atom Transfer Radical Polymerization (ATRP)

Macromolecules, 1998
To investigate the mechanism of the controlled/“living” radical polymerization system, electron paramagnetic resonance (EPR) spectroscopy was applied to the atom transfer radical polymerization (ATRP) of styrene. Although only copper(I) species was added to the system initially, EPR signals of a copper(II) species were clearly observed in the ...
Atsushi Kajiwara, Krzysztof Matyjaszewski, Mikiharu Kamachi   +2 more
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Atom Transfer Radical Polymerization (ATRP) of Ethyl Acrylate: Its Mechanistic Studies

Macromolecular Symposia, 2006
AbstractAtom transfer radical polymerization (ATRP) of ethyl acrylate was carried out in bulk using ethyl 2‐bromoisobutyrate as initiator, CuBr as well as CuCl as catalyst in combination with different ligands e.g., 2,2′ bipyridine (bpy)andN,N, N′,N″,N″‐pentamethyldiethylenetriamine (PMDETA).
Haimanti Datta, Anil K. Bhowmick, Nikhil K. Singha   +2 more
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Graft copolymers prepared by atom transfer radical polymerization (ATRP) from cellulose

Polymer, 2009
Abstract A cellulose-based macro-initiator, cellulose 2-bromoisobutyrylate, for atom transfer radical polymerization (ATRP) was successfully synthesized by direct homogeneous acylation of cellulose in a room temperature ionic liquid, 1-allyl-3-methylimidazolium chloride, without using any catalysts and protecting group chemistry.
Tao Meng, Xia Gao, Jun Zhang, Jinying Yuan, Yuzhu Zhang, Jiasong He   +5 more
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Surface Modification of Carbon Fiber via Atom Transfer Radical Polymerization (ATRP)

Advanced Materials Research, 2011
This study demonstrates the surface modification of carbon fiber by grafting polyglycidyl methacrylate (PGMA) using atom transfer radical polymerization (ATRP). Firstly, the surface of carbon fiber was modified by using 3-aminopropyltriethoxysilane and 2-bromoisobutyryl bromide to immobilize ATRP initiators on the surface.
Lei Xiong, Hong Bo Liang, Hai Tao Xu
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Parallel Synthesis of Polymer Libraries Using Atom Transfer Radical Polymerization (ATRP)

Macromolecular Chemistry and Physics, 2009
AbstractParallel atom transfer radical polymerization (ATRP) of styrene and t‐butyl acrylate (t‐BA) was investigated. A series of ATRP polymerizations were carried out in parallel with varying targeted molecular weight ($\overline M _{\rm n}$) and showed excellent reproducibility of $\overline M _{\rm n}$, polydispersity, and conversion.
Mohammed J. Nasrullah, Dean C. Webster
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Atom transfer radical polymerization (ATRP) of styrene and acrylonitrile with monofunctional and bifunctional initiators

Polymer, 2007
Abstract A bifunctional initiator (benzal bromide) was used to initiate the bulk atom transfer radical polymerization of styrene and acrylonitrile at 90 °C with CuBr/2,2-bipyridyl. We compared these results with those of a monofunctional initiator of similar structure (1-bromoethyl benzene) under the same polymerization conditions. The monofunctional
Mamdouh Al-Harthi, Amirpouyan Sardashti, João B.P. Soares, Leonardo C. Simon   +3 more
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Modification of Titanium via Surface-Initiated Atom Transfer Radical Polymerization (ATRP)

Industrial & Engineering Chemistry Research, 2006
Modification of titanium via surface-initiated atom transfer radical polymerization (ATRP) was carried out. The surface of the titanium foil was activated initially by a silane coupling agent containing the ATRP initiator, benzyl chloride. Well-defined polymer brushes of poly(ethylene glycol) methacrylate (PEGMA), (2-dimethylamino)ethyl methacrylate ...
Zhang, F., Xu, F.J., Kang, E.T., Neoh, K.G.   +3 more
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Atom-transfer radical polymerization: New method breathes life into ATRP

Nature Reviews Chemistry, 2018
The practicality of radical polymerizations is limited by their sensitivity to O2. This inhibitor can be enzymatically degraded into H2O2, which is scavenged by pyruvate as part of a new atom transfer radical polymerization (ATRP) methodology.
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Atom Transfer Radical Polymerization (ATRP): Current Status and Future Perspectives

Macromolecules, 2012
Current status and future perspectives in atom transfer radical polymerization (ATRP) are presented. Special emphasis is placed on mechanistic understanding of ATRP, recent synthetic and process development, and new controlled polymer architectures enabled by ATRP.
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Olefin copolymerization using atom transfer radical polymerization (ATRP)

Polymer Preprints, 2003
Olefin copolymers of alpha-olefins with polar monomers with various architectures remain an ultimate goal in polyolefin engineering. The present paper is a more detailed study on the copolymn. of alpha-olefins (1-octene) with acrylates (Me acrylate). Comparison of reaction kinetics between free radical polymn.
Venkatesh, R., Klumperman, B.
openaire   +2 more sources