Aggregation behavior of amphiphic comb-like copolymer containing poly(ethylene oxide) methyl ether grafts

Zhang, Wei; Du, Zongliang; Wang, Wanxu; Li, Guojin

doi:10.1016/j.colsurfa.2011.12.028

Cited by 20 publications

(9 citation statements)

References 30 publications

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“…The variation of SFT with PFSA concentration in the brine solution was similar to that in aqueous solution. For the present polymeric surfactants not containing fluorine, CMC was almost higher than 1.0 g l −1 and the surface tensions were commonly 37–55 mN m −1 at CMC [ 15 , 21 – 25 ]. Therefore, compared with the polymeric surfactants without C–F bonds reported in the literature, the surface activity of PFSA was stronger and its CMC in aqueous and brine solutions was much lower.…”

Section: Resultsmentioning

confidence: 99%

Solution properties and aggregating structures for a fluorine-containing polymeric surfactant with a poly(ethylene oxide) macro-monomer

Zhong

Lian

et al. 2018

R. Soc. open sci.

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A polymeric surfactant (PFSA) was synthesized by the aqueous free-radical copolymerization using acrylamide, sodium 2-acrylamido-2-methylpropane sulfonate, allyl-capped octylphenoxy poly(ethylene oxide) (PEO) with the polymerization degree of 20 (AOP) and 1H,1H,2H,2H-perfluoro-1-decyl p-vinylbenzyl ether (VF). PFSA exhibited both the good surface and interfacial activities and the thickening behaviour. It could be used in enhanced oil recovery to increase both sweep and oil displacement efficiencies. The critical micelle concentration (CMC) of PFSA was 0.1 g l−1 in aqueous solution. The spherical micelles with the diameter of 100 nm were formed at CMC, and numerous compact worm-shaped micelles were observed above CMC. The interfacial tension was 0.027 mN m−1 for the 0.1 g l−1 PFSA solution containing 5 g l−1 NaCl and 0.209 g l−1 SDBS. The PFSA solutions still showed low interfacial tensions at high NaCl concentrations and temperatures, respectively, because of the incorporation of both VF and AOP containing long PEO.

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Section: Resultsmentioning

confidence: 99%

Solution properties and aggregating structures for a fluorine-containing polymeric surfactant with a poly(ethylene oxide) macro-monomer

Zhong

Lian

et al. 2018

R. Soc. open sci.

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“…The weak chemical shift d (2.26 ppm) and f (4.05 ppm), characteristic of CH-and OH-, respectively, are also found. According to the previous studies [52,55], the substitution degree of C n H 2n þ 1 OH along EMA backbones is calculated based on the area ratio of CH 3 group (a ¼0.88) of side chain and CH 2 (e¼ 3.65 ppm) of EMA. Table 1 gives the results of substitution degree.…”

Section: Resultsmentioning

confidence: 99%

Shape-stabilized phase change materials based on poly(ethylene-graft-maleic anhydride)-g-alkyl alcohol comb-like polymers

Liu

Wang

Qi³

et al. 2015

Solar Energy Materials and Solar Cells

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“…Particularly, the surface of hydrophobic main chain is more easily to be covered by the ethoxy group on side chains, resulting to the increase of water solubility of SA‐M 23,24 . Simultaneously, the hydrophilic side chain of SA‐M furthers its hydrophilic property and weakens the ability to enrich and adsorb at surface 25 . A comparison with commercial TERSPERSE® 2700 (copolymer of styrene and Na methacrylate) is carried out to demonstrate the superiority of the developed comb‐like polymeric surfactant 26 .…”

Section: Resultsmentioning

confidence: 99%

“…The Gibbs' law is used to calculate the adsorption and aggregation data of amphiphilic polymeric surfactant 25 . According to Gibbs' law, the saturation surface excess concentrations ( Γ max ) and the minimum area per molecule ( A min ) values are calculated by the Gibbs adsorption isotherm equation (Equations ) and ()) 25 …”

Section: Resultsmentioning

confidence: 99%

Novel comb‐like anion‐nonionic copolymer for improving the stability of pymetrozine suspension concentrate

Zhang

Yang

et al. 2020

J of Applied Polymer Sci

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Coalescence and flocculation are two challenges for the stability and efficacy of pesticide suspension concentrate (SC) during the production and storage. To improve the stability of 25% pymetrozine SC, three comb-like poly(styrene-coacrylic acid-co-polyethylene glycol methyl ether maleate) (SA-M) with different length side chains were synthesized by free radical polymerization and characterized by Fourier transform infrared spectroscopy and H-nuclear magnetic resonance. Surface-active parameters, including critical aggregation concentration (critical micelle concentration), saturation surface excess concentration (Γ max), minimum area per molecule (A min), and standard Gibbs free energy ΔG 0 m values were obtained from surface tension measurement. It shows that the surface-active property of SA-M decreased with the side chain length. Besides, 25% pymetrozine SC prepared using SA-M as dispersant had low zeta potential and low viscosity but high dispersibility and thermal storage stability. It is speculated that the formation of hydrogen bonds between nonionic branches and pymetrozine molecule at the expense of interruption of intermolecular hydrogen bonding between pymetrozine and water molecule, plays a key role in the stability mechanism.

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Aggregation behavior of amphiphic comb-like copolymer containing poly(ethylene oxide) methyl ether grafts

Cited by 20 publications

References 30 publications

Solution properties and aggregating structures for a fluorine-containing polymeric surfactant with a poly(ethylene oxide) macro-monomer

Solution properties and aggregating structures for a fluorine-containing polymeric surfactant with a poly(ethylene oxide) macro-monomer

Shape-stabilized phase change materials based on poly(ethylene-graft-maleic anhydride)-g-alkyl alcohol comb-like polymers

Novel comb‐like anion‐nonionic copolymer for improving the stability of pymetrozine suspension concentrate

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