Adsorption Behavior of Fluorocarbon Surfactants on Polytetrafluoroethylene Surface DOI Creative Commons
Fei Yan, Cheng Ma,

Qingtao Gong

et al.

Colloids and Interfaces, Journal Year: 2024, Volume and Issue: 8(6), P. 64 - 64

Published: Nov. 20, 2024

By using the sessile drop method, wetting properties of nonionic fluorocarbon surfactants (FNS-1 and FNS-2) anionic surfactant (FAS) solutions on surface polytetrafluoroethylene (PTFE) were investigated. Meanwhile, effects concentration contact angle, adhesion tension, PTFE–liquid interfacial work with different structures detected. The results demonstrate that adsorption amount three at air–liquid interface is 1.5~2 times higher than their PTFE–solution interface. Before critical micelle (CMC), molecules rely hydrophobic groups to adsorb PTFE surface. smallest molecular size FNS-2 in largest amount, while electrostatic repulsion large steric hindrance result for FAS. Above CMC, form semi-micelles hydrophilic modification ability stronger reported surfactants, angle can be reduced about 20° high concentrations. order > FNS-1 Hydrophilic EO effectively enhance hydrophilicity FNS-2. Due -CH3 group smaller possesses a weaker Investigating behavior help us better utilize surfactants. This could have broad implications colloid science.

Language: Английский

Regulation mechanism of the surfactant hydrophilic headgroup on the wettability of bituminous coal: Experiments and molecular dynamics simulations DOI
Wen Nie, Ke Tong,

Qiu Bao

et al.

Construction and Building Materials, Journal Year: 2024, Volume and Issue: 458, P. 139685 - 139685

Published: Dec. 24, 2024

Language: Английский

Citations

2
Multiscale characterization of surfactant-enhanced coal rock pore-fracture imbibition DOI
Qiming Huang, Yuting Yan, Bo Yu

et al.

Process Safety and Environmental Protection, Journal Year: 2024, Volume and Issue: 190, P. 1494 - 1505

Published: Aug. 6, 2024

Language: Английский

Citations

2
Investigation of the impact of micro-nano pore geometry on CH4 adsorption DOI
Shuming Liu, Xijian Li, Junjie Cai

et al.

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: unknown, P. 157162 - 157162

Published: Oct. 1, 2024

Language: Английский

Citations

1
Wettability of a Polymethylmethacrylate Surface by Fluorocarbon Surfactant Solutions DOI Creative Commons
Fei Yan, Cheng Ma,

Qingtao Gong

et al.

Chemistry, Journal Year: 2024, Volume and Issue: 6(5), P. 1063 - 1077

Published: Sept. 16, 2024

To clarify the adsorption behavior of fluorocarbon surfactants on PMMA surfaces, contact angles two nonionic (FNS-1 and FNS-2) an anionic surfactant (FAS) polymethylmethacrylate (PMMA) surface were determined using sessile drop method. Moreover, effects molecular structures tension, adhesion solid–liquid interfacial work three investigated. The results demonstrate that amounts for at air–water interface are 4~5 times higher than those PMMA–solution interface. adsorb by polar groups before CMC hydrophobic chains after CMC. Before CMC, FNS-2 with smallest size owns highest amount, while FAS large-branched electrostatic repulsion has amount. After form aggregates PMMA-liquid possesses amount Besides, FNS-1 a due to longer chain lower value FNS-1. behaviors different. forms which may be attributed interaction between head surface.

Language: Английский

Citations

0
Optimization of solvent cooling crystallization process for separating phenanthrene from 9-fluorenone by COSMO-RS and solubility calculation approach DOI
Lei Tian,

Mengni Pan,

Cuiping Ye

et al.

Journal of Molecular Liquids, Journal Year: 2024, Volume and Issue: unknown, P. 126176 - 126176

Published: Oct. 1, 2024

Language: Английский

Citations

0
Experimental and molecular dynamics simulation studies on the effect of composite surfactants on the wettability of anthracite coal DOI

Lin‐Shu Du,

Jun Nian, Jinqi Fu

et al.

Colloids and Surfaces C Environmental Aspects, Journal Year: 2024, Volume and Issue: 2, P. 100050 - 100050

Published: Nov. 1, 2024

Language: Английский

Citations

0
Adsorption Behavior of Fluorocarbon Surfactants on Polytetrafluoroethylene Surface DOI Creative Commons
Fei Yan, Cheng Ma,

Qingtao Gong

et al.

Colloids and Interfaces, Journal Year: 2024, Volume and Issue: 8(6), P. 64 - 64

Published: Nov. 20, 2024

By using the sessile drop method, wetting properties of nonionic fluorocarbon surfactants (FNS-1 and FNS-2) anionic surfactant (FAS) solutions on surface polytetrafluoroethylene (PTFE) were investigated. Meanwhile, effects concentration contact angle, adhesion tension, PTFE–liquid interfacial work with different structures detected. The results demonstrate that adsorption amount three at air–liquid interface is 1.5~2 times higher than their PTFE–solution interface. Before critical micelle (CMC), molecules rely hydrophobic groups to adsorb PTFE surface. smallest molecular size FNS-2 in largest amount, while electrostatic repulsion large steric hindrance result for FAS. Above CMC, form semi-micelles hydrophilic modification ability stronger reported surfactants, angle can be reduced about 20° high concentrations. order > FNS-1 Hydrophilic EO effectively enhance hydrophilicity FNS-2. Due -CH3 group smaller possesses a weaker Investigating behavior help us better utilize surfactants. This could have broad implications colloid science.

Language: Английский

Citations

0