Role of Molecular Architecture in Polymer Diffusion: A PGSE-NMR Study of Linear and Cyclic Poly(ethylene oxide)

1995 ◽  
Vol 99 (45) ◽  
pp. 16752-16756 ◽  
Author(s):  
P. C. Griffiths ◽  
P. Stilbs ◽  
G. E. Yu ◽  
C. Booth
Keyword(s):  
Ethylene Oxide ◽  
Molecular Architecture ◽  
Polymer Diffusion ◽  
Nmr Study ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene ◽  
Pgse Nmr

scholarly journals Effect of Molecular Architecture on Associating Behavior of Star-Like Amphiphilic Polymers Consisting of Plural Poly(ethylene oxide) and One Alkyl Chain

Polymers ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 460
Author(s):  
Daisuke Kugimoto ◽  
Aoi Taniguchi ◽  
Masaki Kinoshita ◽  
Isamu Akiba
Keyword(s):  
Ethylene Oxide ◽  
Average Molecular Weight ◽  
Amphiphilic Polymers ◽  
Hydrophobic Core ◽  
Molecular Architecture ◽  
Polymer Micelles ◽  
The Core ◽  
X Ray Scattering ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene

Associating behavior of star-like amphiphilic polymers consisting of two or three poly(ethylene oxide) (PEO) chains and one stearyl chain (C18) was investigated. Although the aggregation number (Nagg) of linear analogue of amphiphilic polymers monotonically decreased with increasing number-average molecular weight of PEO (Mn,PEO), the Nagg of micelles of star-like amphiphilic polymers with Mn,PEO = 550 g/mol was smaller than that with Mn,PEO = 750 g/mol, whereas that with Mn,PEO ≥ 750 g/mol showed general Mn,PEO dependence. Small-angle X-ray scattering analyses revealed that the occupied area of one PEO chain on the interface between hydrophobic core and corona layer in the micelles of star-like polymers was much narrower than that in the linear amphiphilic polymers. This result indica ted the PEO chains of star-like polymers partially took unfavorable conformation near the core–corona interface in polymer micelles. The effect of local conformation of PEO chains near the interface on the associating behavior became significant as Mn,PEO decreased. Therefore, in polymer micelles of star-like amphiphilic polymers containing PEO with Mn,PEO = 550 g/mol, the enlargement of occupied area of PEO on the core–corona interface should be caused to avoid the formation of unfavorable conformations of partial PEO chains, resulting in a decrease in Naggs.

Conformational adaption of poly(ethylene oxide): A carbon-13 NMR study

1991 ◽  
Vol 95 (17) ◽  
pp. 6706-6709 ◽  
Author(s):  
Mikael Bjoerling ◽  
Gunnar Karlstroem ◽  
Per Linse
Keyword(s):  
Ethylene Oxide ◽  
Nmr Study ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene

Lithium-7 NMR study of polymer electrolytes based on composites of poly[bis((methoxyethoxy)ethoxy)phosphazene] and poly(ethylene oxide)

1991 ◽  
Vol 3 (3) ◽  
pp. 534-538 ◽  
Author(s):  
K. J. Adamic ◽  
S. G. Greenbaum ◽  
K. M. Abraham ◽  
M. Alamgir ◽  
M. C. Wintersgill ◽  
...  
Keyword(s):  
Ethylene Oxide ◽  
Polymer Electrolytes ◽  
Nmr Study ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene

Miscibility of poly(vinyl chloride)/poly(ethylene oxide) blends—I. Thermal properties and solid state 13C-NMR study

1993 ◽  
Vol 29 (11) ◽  
pp. 1477-1481 ◽  
Author(s):  
C. Marco ◽  
M.A. Gömez ◽  
J.G. Fatou ◽  
A. Etxeberria ◽  
M.M. Elorza ◽  
...  
Keyword(s):  
Thermal Properties ◽  
Solid State ◽  
Ethylene Oxide ◽  
Vinyl Chloride ◽  
13C Nmr ◽  
Poly Vinyl Chloride ◽  
Nmr Study ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene ◽  
Solid State 13C Nmr

Role of functional nano-sized inorganic fillers in poly(ethylene) oxide-based polymer electrolytes

2003 ◽  
Vol 117 (1-2) ◽  
pp. 124-130 ◽  
Author(s):  
Kwang-Sun Ji ◽  
Hee-Soo Moon ◽  
Jong-Wook Kim ◽  
Jong-Wan Park
Keyword(s):  
Ethylene Oxide ◽  
Polymer Electrolytes ◽  
Poly Ethylene Oxide ◽  
Inorganic Fillers ◽  
Poly Ethylene

NMR study of molecular motion in poly(ethylene oxide)

1981 ◽  
Vol 5 (5) ◽  
pp. 271-275 ◽  
Author(s):  
S. Głowinkowski ◽  
K. Jurga ◽  
Z. Pajak
Keyword(s):  
Ethylene Oxide ◽  
Molecular Motion ◽  
Nmr Study ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene
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