Self-Assembly Study of Polydisperse Ethylene Oxide-Based Nonionic Surfactants

Langmuir ◽  
2007 ◽  
Vol 23 (3) ◽  
pp. 1014-1017 ◽  
Author(s):  
Miklós Nagy ◽  
László Szöllösi ◽  
Sándor Kéki ◽  
Miklós Zsuga
Keyword(s):  
Ethylene Oxide ◽  
Self Assembly ◽  
Nonionic Surfactants

scholarly journals The rheological characteristics for the mixtures of cationic surfactant and anionic–nonionic surfactants: the role of ethylene oxide moieties

RSC Advances ◽  
2017 ◽  
Vol 7 (22) ◽  
pp. 13032-13040 ◽  
Author(s):  
Liming Zhang ◽  
Wanli Kang ◽  
Derong Xu ◽  
Haishun Feng ◽  
Pengyi Zhang ◽  
...  
Keyword(s):  
Ethylene Oxide ◽  
Cationic Surfactant ◽  
Self Assembly ◽  
Cationic Surfactants ◽  
Nonionic Surfactants ◽  
Rheological Characteristics

Ethylene oxide moieties in various numbers regulate the rheological characteristics of anionic–nonionic/cationic surfactants solutions by affecting the molecular self-assembly.

Self-Division of 2-D Sheets in Aromatic Macrocycle Assembly

2021 ◽  
Author(s):  
Yanqiu Wang ◽  
Xiaopeng Feng ◽  
Myongsoo Lee
Keyword(s):  
Ethylene Oxide ◽  
Self Assembly

We report that the aqueous self-assembly of aromatic macrocycle amphiphiles containing oligo(ethylene oxide) dendromers generates switchable 2-D sheet structures. Upon heating, the flat sheets show to split up into uniform...

Symmetric Poly(ethylene oxide-b-styrene-b-isoprene) Triblock Copolymers: Synthesis, Characterization, and Self-Assembly in Bulk and Thin Film

2014 ◽  
Vol 47 (18) ◽  
pp. 6373-6381 ◽  
Author(s):  
Yali Qiao ◽  
Rachel Ferebee ◽  
Bongjoon Lee ◽  
Indranil Mitra ◽  
Nathaniel A. Lynd ◽  
...  
Keyword(s):  
Thin Film ◽  
Ethylene Oxide ◽  
Self Assembly ◽  
Triblock Copolymers ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene

Solvent-tuning of ordered mesoporous silicas prepared through evaporation-induced self-assembly templated by poly(ethylene oxide-b-ε-caprolactone)

RSC Advances ◽  
2014 ◽  
Vol 4 (105) ◽  
pp. 61012-61021 ◽  
Author(s):  
Wei-Cheng Chu ◽  
Chen-Xin Lin ◽  
Shiao-Wei Kuo
Keyword(s):  
Ethylene Oxide ◽  
Self Assembly ◽  
Mesoporous Silicas ◽  
Size Distributions ◽  
Ordered Mesoporous ◽  
Pore Size Distributions ◽  
Evaporation Induced Self Assembly ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene ◽  
Selection Of

Highly ordered mesoporous silicas having narrow pore size distributions and various morphologies merely through selection of an appropriate solvent.

Glyphosate Toxicity to Common Milkweed and Hemp Dogbane as Influenced by Surfactants

Weed Science ◽  
1977 ◽  
Vol 25 (3) ◽  
pp. 275-287 ◽  
Author(s):  
J.B. Wyrill ◽  
O.C. Burnside
Keyword(s):  
Contact Angle ◽  
Ethylene Oxide ◽  
Quaternary Ammonium ◽  
Nonionic Surfactants ◽  
Ionic Surfactants ◽  
Oxide Content ◽  
Asclepias Syriaca ◽  
Molar Basis ◽  
Dimethyl Amine ◽  
Percentage Basis

Surfactants were evaluated in the greenhouse for their ability to enhance glyphosate [N-(phosphonomethyl) glycine] toxicity to common milkweed (Asclepias syriacaL.) and hemp dogbane (Apocynum cannabinumL.). Ethoxylated amines were among the most effective groups of surfactants. Nonionic ether and ester ethoxylates combined with a dimethyl amine or a quaternary ammonium salt were more effective than any of these surfactants alone. Effectiveness of ethoxylated amine surfactants was altered by pH changes. Cat-ionic surfactants tended to be more effective than nonionic surfactants. With exceptions, surfactants were more effective with increased ethoxylation. Amine surfactant effectiveness increased with increasing concentrations up to 0.3% (w/v). Surfactant effectiveness on a molar basis was more closely related to the ethylene oxide content of the surfactant than was effectiveness on a percentage basis. Contact angle was not related to surfactant effectiveness at high or low surfactant concentrations. Ethoxylated stearyl ether and amine surfactants gave optimum effectiveness at hydrophile-lipophile balance (HLB) values of 15 to 16 and 19 to 20, respectively. Surfactants with a low HLB were usually less effective. Effectiveness of surfactant combinations was quite variable and difficult to predict. Therefore, the indiscriminate addition of surfactants to glyphosate spray mixtures which already contain a surfactant should be avoided.

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