Raman Longitudinal Acoustic Mode Studies of a Poly(ethylene oxide) Fraction during Isothermal Crystallization from the Melt

1996 ◽  
Vol 29 (22) ◽  
pp. 7186-7192 ◽  
Author(s):  
Insun Kim ◽  
Samuel Krimm
Keyword(s):  
Ethylene Oxide ◽  
Isothermal Crystallization ◽  
Acoustic Mode ◽  
Longitudinal Acoustic ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene ◽  
Crystallization From The Melt

Raman scattering from the longitudinal acoustic mode in crystalline poly(ethylene oxide)

Polymer ◽  
1976 ◽  
Vol 17 (4) ◽  
pp. 354-355 ◽  
Author(s):  
A. Hartley ◽  
Y.K. Leung ◽  
C. Booth ◽  
I.W. Shepherd
Keyword(s):  
Ethylene Oxide ◽  
Raman Scattering ◽  
Acoustic Mode ◽  
Longitudinal Acoustic ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene

The effect of swelling on the longitudinal acoustic mode in crystalline α,ω-methoxy-poly(ethylene oxide)

Polymer ◽  
1979 ◽  
Vol 20 (6) ◽  
pp. 778-779 ◽  
Author(s):  
J. Al Kafaji ◽  
G.A. Pape ◽  
C. Booth ◽  
I.W. Shepherd
Keyword(s):  
Ethylene Oxide ◽  
Acoustic Mode ◽  
Longitudinal Acoustic ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene

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.

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