Influence of Poly(ethylene oxide) Grafts on Kinetics of LCST Behavior in Aqueous Poly(N-vinylcaprolactam) Solutions and Networks Studied by Modulated Temperature DSC

2004 ◽  
Vol 37 (3) ◽  
pp. 1054-1061 ◽  
Author(s):  
Kurt Van Durme ◽  
Sam Verbrugghe ◽  
Filip E. Du Prez ◽  
Bruno Van Mele
Keyword(s):  
Ethylene Oxide ◽  
Modulated Temperature ◽  
Modulated Temperature Dsc ◽  
Lcst Behavior ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene ◽  
Kinetics Of

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.

Physical Gels Based on Polyrotaxanes: Kinetics of the Gelation, and Relative Contributions of α-Cyclodextrin and Poly(ethylene oxide) to the Gel Cohesion

2010 ◽  
Vol 291-292 (1) ◽  
pp. 202-211 ◽  
Author(s):  
Christophe Travelet ◽  
Guy Schlatter ◽  
Pascal Hébraud ◽  
Cyril Brochon ◽  
Denis V. Anokhin ◽  
...  
Keyword(s):  
Ethylene Oxide ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene ◽  
Kinetics Of

Study of block copolymer micelles. 6. Exit and reentry kinetics of bromoacetonaphthone in aqueous polystyrene-poly(ethylene oxide) block copolymer micelles

1993 ◽  
Vol 26 (8) ◽  
pp. 1825-1828 ◽  
Author(s):  
Zdenek Hruska ◽  
Mark Piton ◽  
Ahmad Yekta ◽  
Jean Duhamel ◽  
Mitchell A. Winnik ◽  
...  
Keyword(s):  
Block Copolymer ◽  
Ethylene Oxide ◽  
Poly Ethylene Oxide ◽  
Block Copolymer Micelles ◽  
Copolymer Micelles ◽  
Poly Ethylene ◽  
Kinetics Of
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