Aggregation in dilute solutions of high molar mass poly(ethylene) oxide and its effect on polymer turbulent drag reduction

Polymer ◽  
2009 ◽  
Vol 50 (1) ◽  
pp. 261-270 ◽  
Author(s):  
Abhishek M. Shetty ◽  
Michael J. Solomon
Keyword(s):  
Ethylene Oxide ◽  
Drag Reduction ◽  
Molar Mass ◽  
Dilute Solutions ◽  
Turbulent Drag Reduction ◽  
High Molar Mass ◽  
Turbulent Drag ◽  
Poly Ethylene Oxide ◽  
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.

Drag Reduction of Well‐Mixed Solutions of Poly(Ethylene Oxide) and Organic Dyes in Water

1980 ◽  
Vol 24 (5) ◽  
pp. 571-587 ◽  
Author(s):  
Neil S. Berman ◽  
Robert B. Berger ◽  
Jorge R. Leis
Keyword(s):  
Ethylene Oxide ◽  
Drag Reduction ◽  
Organic Dyes ◽  
Mixed Solutions ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene

scholarly journals Interaction between poly (ethylene oxide) and silica nanoparticles in dilute solutions

2013 ◽  
Vol 31 (9) ◽  
pp. 1290-1298 ◽  
Author(s):  
Da-peng Wang ◽  
Mu-quan Yang ◽  
Zhi-xin Dong ◽  
Shu-qin Bo ◽  
Xiang-ling Ji
Keyword(s):  
Ethylene Oxide ◽  
Silica Nanoparticles ◽  
Dilute Solutions ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene
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