Thickening Process and Kinetics of Lamellar Crystals of a Low Molecular Weight Poly(ethylene oxide)

2007 ◽  
Vol 40 (12) ◽  
pp. 4386-4388 ◽  
Author(s):  
Xiong-Feng Tang ◽  
Xiao-Jin Wen ◽  
Xue-Mei Zhai ◽  
Nan Xia ◽  
Wei Wang ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Ethylene Oxide ◽  
Low Molecular Weight ◽  
Poly Ethylene Oxide ◽  
Lamellar Crystals ◽  
Poly Ethylene ◽  
Kinetics Of

scholarly journals THICKENING PROCESS OF LAMELLAR CRYSTALS OF A LOW MOLECULAR WEIGHT POLY(ETHYLENE OXIDE)

2011 ◽  
Vol 011 (9) ◽  
pp. 1040-1052 ◽  
Author(s):  
Nan XIA ◽  
Xiongfeng TANG ◽  
Xiaojing WEN ◽  
Guoliang ZHANG ◽  
Xuemei ZHAI ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Ethylene Oxide ◽  
Low Molecular Weight ◽  
Poly Ethylene Oxide ◽  
Lamellar Crystals ◽  
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.

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

Melting behaviour of low molecular weight poly (ethylene-oxide) fractions

1976 ◽  
Vol 254 (8) ◽  
pp. 695-715 ◽  
Author(s):  
C. P. Buckley ◽  
A. J. Kovacs
Keyword(s):  
Molecular Weight ◽  
Ethylene Oxide ◽  
Low Molecular Weight ◽  
Melting Behaviour ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene

Isothermal Thickening and Thinning Processes in Low Molecular Weight Poly(ethylene oxide) Fractions Crystallized from the Melt

1999 ◽  
pp. 118-139 ◽  
Author(s):  
Er-Qiang Chen ◽  
Song-Wook Lee ◽  
Anqiu Zhang ◽  
Bon-Suk Moon ◽  
Ian Mann ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Ethylene Oxide ◽  
Low Molecular Weight ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene

Crystallinity and fusion of low molecular weight poly(ethylene oxide): effect of end-group

Polymer ◽  
1977 ◽  
Vol 18 (8) ◽  
pp. 852-854 ◽  
Author(s):  
M.J. Fraser ◽  
D.R. Cooper ◽  
C. Booth
Keyword(s):  
Molecular Weight ◽  
Ethylene Oxide ◽  
Low Molecular Weight ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene ◽  
End Group
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