Preparation of Well-Defined Poly[(ethylene oxide)-block-(sodium 2-acrylamido-2-methyl-1-propane sulfonate)] Diblock Copolymers by Water-Based Atom Transfer Radical Polymerization

2007 ◽  
Vol 28 (23) ◽  
pp. 2277-2277 ◽  
Author(s):  
Dilyana Paneva ◽  
Laetitia Mespouille ◽  
Nevena Manolova ◽  
Philippe Degée ◽  
Iliya Rashkov ◽  
...  
Keyword(s):  
Ethylene Oxide ◽  
Atom Transfer Radical Polymerization ◽  
Radical Polymerization ◽  
Diblock Copolymers ◽  
Atom Transfer ◽  
Water Based ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene

The study of synthesis of poly(ethylene oxide)-b-poly(N,Ndimethylacrylamide) by atom transfer radical polymerization and self-assembly in selective solvents

e-Polymers ◽  
2007 ◽  
Vol 7 (1) ◽  
Author(s):  
Yang Runmiao ◽  
Shi Ronghua ◽  
Zhou Dan ◽  
Wang Yanmei ◽  
Han Yanchun
Keyword(s):  
Ethylene Oxide ◽  
Atom Transfer Radical Polymerization ◽  
Radical Polymerization ◽  
Self Assembly ◽  
Copolymer Composition ◽  
Atom Transfer ◽  
Nmr Studies ◽  
Selective Solvents ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene

AbstractPoly(ethylene oxide)-b-poly(N, N-dimethylacrylamide) (PEO-b-PDMA) was synthesized by successive atom transfer radical polymerization (ATRP) of N,N-dimethylacrylamide (DMA) monomer using PEO-Br macro initiators as initiator, CuBr and 5,5,7,12,12,14-hexamethyl-1,4,8,11-tetraazamacrocyclotetra decane (Me6[14]aneN4) as catalyst and ligand.PEO-Br macroinitiator was synthesized by esterification of PEO with 2-bromoisobutyryl bromide. GPC and 1H NMR studies show that the plot of ln([DMA]0/[DMA]) against the reaction time is linear, and the molecular weight of the resulting PDMA increased linearly with the conversion. Within 3 h, the polymerization can reach almost 60% of conversion. PEO-b-PDMA copolymer with low polydispersity index (Mw/Mn≈1.1) is obtained. Self-assembly of PEO-b-PDMA in selective solvents is also studied. It could self-assemble into micelles in methanol/acetone (1/10, v/v) solution. TEM analyses of the PEO-b- PDMA micelles with narrow size distribution revealed that their size and shape depend much on the copolymer composition.

scholarly journals Poly (Ethylene Oxide)-Based Block Copolymer Electrolytes Formed via Ligand-Free Iron-Mediated Atom Transfer Radical Polymerization

Polymers ◽  
2020 ◽  
Vol 12 (4) ◽  
pp. 763 ◽  
Author(s):  
Sibo Li ◽  
Mengying Tian ◽  
Jirong Wang ◽  
Feipeng Du ◽  
Liang Li ◽  
...  
Keyword(s):  
Ethylene Oxide ◽  
Atom Transfer Radical Polymerization ◽  
Radical Polymerization ◽  
Atom Transfer ◽  
Poly Ethylene Glycol ◽  
Molecular Weights ◽  
Ligand Free ◽  
Coordination Effect ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene

The Br-terminated poly (ethylene oxide) (PEO-Br) is used as a green and efficient macroinitiator in bulk Fe-catalyzed atom transfer radical polymerization (ATRP) without the addition of any organic ligands. The polymerization rate is able to be mediated by PEO-Br with various molecular weights, and the decrease in redox potential of FeBr2 in cyclic voltammetry (CV) curves indicates that an increased coordination effect is deteriorated with the depressing reaction activity in the longer ethylene oxide (EO) chain in PEO-Br. In combination with the study of different catalysts and catalytic contents, the methyl metharylate (MMA) or poly (ethylene glycol) monomethacrylate (PEGMA) was successfully polymerized with PEO-Br as an initiator. This copolymer obtained from PEGMA polymerization can be further employed as a polymer matrix to form the polymer electrolyte (PE). The higher ionic conductivity of PE was obtained by using a high molecular weight of copolymer.

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