Poly(ethylene oxide)/Laponite nanocomposites via melt-compounding: effect of clay modification and matrix molar mass

Polymer ◽  
2005 ◽  
Vol 46 (3) ◽  
pp. 915-928 ◽  
Author(s):  
Wendy Loyens ◽  
Patric Jannasch ◽  
Frans H.J. Maurer
Keyword(s):  
Ethylene Oxide ◽  
Molar Mass ◽  
Clay Modification ◽  
Melt Compounding ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene

scholarly journals Phase diagrams, densities and refractive indexes of poly(ethylene oxide)+organic salts+water aqueous two-phase systems: Effect of temperature, anion and molar mass

2015 ◽  
Vol 406 ◽  
pp. 70-76 ◽  
Author(s):  
Andrés Felipe Chamorro Rengifo ◽  
Gabriel Max Dias Ferreira ◽  
Guilherme Max Dias Ferreira ◽  
Maria C. Hespanhol da Silva ◽  
Luis Henrique Mendes da Silva
Keyword(s):  
Ethylene Oxide ◽  
Phase Diagrams ◽  
Molar Mass ◽  
Effect Of Temperature ◽  
Organic Salts ◽  
Two Phase ◽  
Aqueous Two Phase Systems ◽  
Poly Ethylene Oxide ◽  
Phase Systems ◽  
Poly Ethylene

scholarly journals Using Triethylborane to Manipulate Reactivity Ratios in Epoxide-Anhydride Copolymerization: Application to the Synthesis of Polyethers with Degradable Ester Functions

Molecules ◽  
2022 ◽  
Vol 27 (2) ◽  
pp. 466
Author(s):  
Vamshi K. Chidara ◽  
Yves Gnanou ◽  
Xiaoshuang Feng
Keyword(s):  
Ethylene Oxide ◽  
Ring Opening ◽  
Molar Mass ◽  
Reactivity Ratio ◽  
Reactivity Ratios ◽  
High Molar Mass ◽  
Alternating Copolymers ◽  
Poly Ethylene Oxide ◽  
Anionic Ring ◽  
Poly Ethylene

The anionic ring-opening copolymerization (ROCOP) of epoxides, namely of ethylene oxide (EO), with anhydrides (AH) generally produces strictly alternating copolymers. With triethylborane (TEB)-assisted ROCOP of EO with AH, statistical copolymers of high molar mass including ether and ester units could be obtained. In the presence of TEB, the reactivity ratio of EO (rEO), which is normally equal to 0 in its absence, could be progressively raised to values lower than 1 or higher than 1. Conditions were even found to obtain rEO equal or close to 1. Samples of P(EO-co-ester) with minimal compositional drift could be synthesized; upon basic degradation of their ester linkages, these samples afforded poly(ethylene oxide) (PEO) diol samples of narrow molar mass distribution. In other cases where rEO were lower or higher than 1, the PEO diol samples eventually isolated after degradation exhibited a broader distribution of molar masses because of the compositional drift of initial P(EO-co-ester) samples.

The interaction between poly(vinyl alcohol) and low-molar-mass poly(ethylene oxide)

2012 ◽  
Vol 126 (1) ◽  
pp. 162-168 ◽  
Author(s):  
Yangbo Li ◽  
Wenqian Wu ◽  
Feng Lin ◽  
Aiming Xiang
Keyword(s):  
Ethylene Oxide ◽  
Vinyl Alcohol ◽  
Molar Mass ◽  
Poly Vinyl Alcohol ◽  
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.

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