Versatile cobalt complexes for initiating immortal ring‐opening polymerization (ROP) of lactide (LA), mediating living radical polymerization of t ‐butyl acrylate ( t BA) and catalyzing copolymerization of LA and t BA by combination of ROP and organometallic‐mediated radical polymerization

2017 ◽  
Vol 32 (2) ◽  
Author(s):  
Jianing Zhang ◽  
Baolong Wang ◽  
Liying Wang ◽  
Junmin Sun ◽  
Yongfeng Zhang ◽  
...  
Keyword(s):  
Radical Polymerization ◽  
Butyl Acrylate ◽  
Ring Opening ◽  
Cobalt Complexes ◽  
Ring Opening Polymerization ◽  
Living Radical Polymerization

Investigations on the Combination of Cationic Ring Opening Polymerization and Single Electron Transfer Living Radical Polymerization to Synthesize 2-Ethyl-2-Oxazoline Block Copolymers

2012 ◽  
Vol 65 (8) ◽  
pp. 1132 ◽  
Author(s):  
Robert A. Young ◽  
Edward L. Malins ◽  
C. Remzi Becer
Keyword(s):  
Electron Transfer ◽  
Radical Polymerization ◽  
Ring Opening ◽  
Catalyst Concentration ◽  
Ring Opening Polymerization ◽  
Living Radical Polymerization ◽  
Single Electron ◽  
Single Electron Transfer ◽  
Cationic Ring Opening Polymerization ◽  
Glycol Methyl Ether

Cationic ring opening polymerization of 2-ethyl-2-oxazoline (EtOx) has been performed using α–bromoisobutyryl bromide (tertiary) and 2-bromopropionyl bromide (secondary) as initiators in acetonitrile. The reaction kinetics have been followed and selected P(EtOx) polymers have been used as macroinitiators for the single electron transfer living radical polymerization (SET-LRP) of methyl acrylate (MA), ethylene glycol methyl ether acrylate and 2-(dimethylamino)ethyl methacrylate. Moreover, the effect of solvent and catalyst concentration have been investigated on the SET-LRP of P(EtOx) initiated MA.

Synthesis of binary-patterned brushes by combining atom transfer radical polymerization and ring-opening polymerization

e-Polymers ◽  
2013 ◽  
Vol 13 (1) ◽  
Author(s):  
Aurore Olivier ◽  
Franck Meyer ◽  
Jean-Marie Raquez ◽  
Philippe Dubois
Keyword(s):  
Atom Transfer Radical Polymerization ◽  
Radical Polymerization ◽  
Ring Opening ◽  
Microcontact Printing ◽  
Gold Surface ◽  
Ring Opening Polymerization ◽  
Careful Study ◽  
Atom Transfer ◽  
Final Thickness ◽  
End Group

Abstract This paper report the synthesis of binary-patterned brushes, combining two distinctive surface initiated-polymerizations (SIP) on the basis of different propagating species: the SI Ring Opening Polymerization (ROP) of L-Lactide (LLA) and SI atom transfer radical polymerization (ATRP) of N,N’-dimethylaminoethyl methacrylate (DMAEMA) on gold surface. First of all, a careful study of surfaceinitiated ROP of L-Lactide from hydroxyl end-group of thiol monolayer on gold surface as catalyzed by metal-free catalyst was carried out. The PLLA brushes synthesis was evaluated using two types of thiol monolayer and revealed the influence of ROP initiator chain length on the final thickness of the PLLA film. Combining the soft lithographic technique, microcontact printing, and the liquid phase deposition, the deposition onto specific micro-domains of both initiators was performed. The growth of PDMAEMA brushes and PLLA brushes was conducted by successive ATRP and ROP.

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