Effects of Salt and Nanoparticles on the Segmental Motion of Poly(ethylene oxide) in Its Crystalline and Amorphous Phases:2H and7Li NMR Studies

2008 ◽  
Vol 112 (36) ◽  
pp. 11217-11226 ◽  
Author(s):  
M. Vogel ◽  
C. Herbers ◽  
B. Koch
Keyword(s):  
Ethylene Oxide ◽  
Segmental Motion ◽  
Nmr Studies ◽  
Amorphous Phases ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene

Poly(lactic acid)−Poly(ethylene oxide) (PLA−PEG) Nanoparticles:  NMR Studies of the Central Solidlike PLA Core and the Liquid PEG Corona

Langmuir ◽  
2002 ◽  
Vol 18 (9) ◽  
pp. 3669-3675 ◽  
Author(s):  
C. R. Heald ◽  
S. Stolnik ◽  
K. S. Kujawinski ◽  
C. De Matteis ◽  
M. C. Garnett ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Ethylene Oxide ◽  
Poly Lactic Acid ◽  
Nmr Studies ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene

Two-dimensional solid-state NMR studies of crystalline poly(ethylene oxide): Conformations and chemical shifts

Polymer ◽  
2005 ◽  
Vol 46 (25) ◽  
pp. 11737-11743 ◽  
Author(s):  
D.J. Harris ◽  
T.J. Bonagamba ◽  
M. Hong ◽  
K. Schmidt-Rohr
Keyword(s):  
Solid State ◽  
Ethylene Oxide ◽  
Solid State Nmr ◽  
Chemical Shifts ◽  
Two Dimensional ◽  
Nmr Studies ◽  
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.

Solid-State1H NMR Studies of Degradable Poly(ethylene oxide) Based Hydrogels

2005 ◽  
Vol 26 (7) ◽  
pp. 537-541 ◽  
Author(s):  
Kaynoush Naraghi ◽  
Bernard Meurer ◽  
Pierre J. Lutz
Keyword(s):  
Ethylene Oxide ◽  
Nmr Studies ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene

Crystalline and Amorphous Phases in the Poly(ethylene oxide)−LiCF3SO3System

1999 ◽  
Vol 32 (3) ◽  
pp. 808-813 ◽  
Author(s):  
Roger Frech ◽  
Sangramithra Chintapalli ◽  
Peter G. Bruce ◽  
Colin A. Vincent
Keyword(s):  
Ethylene Oxide ◽  
Amorphous Phases ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene
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