Hydrodynamic studies on adsorption of poly(ethylene oxide) in porous media. 2. Molecular weight dependence of hydrodynamic thickness

1984 ◽  
Vol 17 (10) ◽  
pp. 2063-2065 ◽  
Author(s):  
Masami Kawaguchi ◽  
Masaaki Mikura ◽  
Akira Takahashi
Keyword(s):  
Molecular Weight ◽  
Porous Media ◽  
Ethylene Oxide ◽  
Molecular Weight Dependence ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene ◽  
Hydrodynamic Thickness

Molecular Weight Dependence of Surface Tension and Refractive Index for Some Poly(ethylene oxide) Derivatives

1969 ◽  
Vol 2 (6) ◽  
pp. 681-682 ◽  
Author(s):  
G. W. Bender ◽  
D. G. LeGrand ◽  
G. L. Gaines
Keyword(s):  
Molecular Weight ◽  
Surface Tension ◽  
Refractive Index ◽  
Ethylene Oxide ◽  
Molecular Weight Dependence ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene

scholarly journals Molecular weight dependence of crystal pattern transitions of poly(ethylene oxide)

2013 ◽  
Vol 31 (5) ◽  
pp. 798-808 ◽  
Author(s):  
Guo-liang Zhang ◽  
Liu-xin Jin ◽  
Ping Zheng ◽  
Wei Wang ◽  
Xiao-jing Wen
Keyword(s):  
Molecular Weight ◽  
Ethylene Oxide ◽  
Molecular Weight Dependence ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene

Isothermal thickening and thinning processes in low molecular-weight poly(ethylene oxide) fractions crystallized from the melt. 3. Molecular weight dependence

1992 ◽  
Vol 25 (5) ◽  
pp. 1453-1460 ◽  
Author(s):  
Stephen Z. D. Cheng ◽  
Jianhua Chen ◽  
Jeffrey S. Barley ◽  
Anqiu Zhang ◽  
Anton Habenschuss ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Ethylene Oxide ◽  
Low Molecular Weight ◽  
Molecular Weight Dependence ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene

The Structure of Radiation Cross-Linked Poly (ethylene oxide) Gels

1971 ◽  
Vol 29 ◽  
pp. 76-77
Author(s):  
C. E. Cluthe ◽  
G. G. Cocks
Keyword(s):  
Molecular Weight ◽  
Ethylene Oxide ◽  
Parallel Plate ◽  
Average Molecular Weight ◽  
Radical Reaction ◽  
Free Radical Reaction ◽  
Nitrogen Gas ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene ◽  
Initial Viscosity

Aqueous solutions of a 1 weight-per cent poly (ethylene oxide) (PEO) were degassed under vacuum, transferred to a parallel plate viscometer under a nitrogen gas blanket, and exposed to Co60 gamma radiation. The Co60 source was rated at 4000 curies, and the dose ratewas 3.8x105 rads/hr. The poly (ethylene oxide) employed in the irradiations had an initial viscosity average molecular weight of 2.1 x 106.The solutions were gelled by a free radical reaction with dosages ranging from 5x104 rads to 4.8x106 rads.

scholarly journals Isothermal Crystallization Kinetics of Poly(ethylene oxide)/Poly(ethylene glycol)-g-silica Nanocomposites

Polymers ◽  
2021 ◽  
Vol 13 (4) ◽  
pp. 648
Author(s):  
Xiangning Wen ◽  
Yunlan Su ◽  
Shaofan Li ◽  
Weilong Ju ◽  
Dujin Wang
Keyword(s):  
Molecular Weight ◽  
Ethylene Oxide ◽  
Crystallization Kinetics ◽  
Isothermal Crystallization ◽  
Crystallization Rate ◽  
Poly Ethylene Glycol ◽  
Isothermal Crystallization Kinetics ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene ◽  
Kinetics Of

In this work, the crystallization kinetics of poly(ethylene oxide) (PEO) matrix included with poly(ethylene glycol) (PEG) grafted silica (PEG-g-SiO2) nanoparticles and bare SiO2 were systematically investigated by differential scanning calorimetry (DSC) and polarized light optical microscopy (PLOM) method. PEG-g-SiO2 can significantly increase the crystallinity and crystallization temperature of PEO matrix under the non-isothermal crystallization process. Pronounced effects of PEG-g-SiO2 on the crystalline morphology and crystallization rate of PEO were further characterized by employing spherulitic morphological observation and isothermal crystallization kinetics analysis. In contrast to the bare SiO2, PEG-g-SiO2 can be well dispersed in PEO matrix at low P/N (P: Molecular weight of matrix chains, N: Molecular weight of grafted chains), which is a key factor to enhance the primary nucleation rate. In particular, we found that the addition of PEG-g-SiO2 slows the spherulitic growth fronts compared to the neat PEO. It is speculated that the interfacial structure of the grafted PEG plays a key role in the formation of nuclei sites, thus ultimately determines the crystallization behavior of PEO PNCs and enhances the overall crystallization rate of the PEO nanocomposites.

Porous media flow of poly(ethylene oxide)/sodium dodecyl sulfate mixtures

1999 ◽  
Vol 42 (1) ◽  
pp. 109-116 ◽  
Author(s):  
C. M. DaRocha ◽  
L. G. Patruyo ◽  
N. E. Ramírez ◽  
A. J. Müller ◽  
A. E. Sáez
Keyword(s):  
Porous Media ◽  
Sodium Dodecyl Sulfate ◽  
Ethylene Oxide ◽  
Sodium Dodecyl ◽  
Porous Media Flow ◽  
Dodecyl Sulfate ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene

scholarly journals Isothermal Thickening and Thinning Processes in Low-Molecular-Weight Poly(ethylene oxide) Fractions Crystallized from the Melt. 8. Molecular Shape Dependence. Volume 32, Number 15, July 27, 1999, pp 4784−4793.

1999 ◽  
Vol 32 (15) ◽  
pp. 5174-5174
Author(s):  
Er-Qiang Chen ◽  
Song-Wook Lee ◽  
Anqiu Zhang ◽  
Bon-Suk Moon ◽  
Ian Mann ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Ethylene Oxide ◽  
Molecular Shape ◽  
Low Molecular Weight ◽  
Shape Dependence ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene
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