Hongbing Wang
China University of Petroleum
ElectrostaticsHydrophobic silicaAmine gas treatingNanomaterialsAdsorptionOil drop experimentPolyelectrolyteNanoparticleCopolymerComposite materialNanotechnologyOrganic chemistryCationic polymerizationAqueous solutionChemistryDopantMaterials scienceInstabilityIonic bondingPentaethylene glycol monododecyl etherCarboxylateEmulsionAmidePolyacrylamideSulfonateSodium dodecyl sulfateFatty alcoholAlkylMechanism (sociology)AlkanePolarMolecular simulationProtonationTemperature and pressureEmulsified oilTertiary amineSio2 nanoparticlesHigh complexityFoam filmStimuli responsiveMoleculeCoordination numberStability (probability)MembraneChemical engineeringChromatographyPhase (matter)Dissipative particle dynamicsHead (vessel)PolymerPulmonary surfactantMolecular dynamicsTernary operationVolume fractionAmphiphileMonolayerOil dropletZeta potentialSurface tensionPickering emulsionHydrolysis
12Publications
6H-index
55Citations
Publications 13
Newest
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#1Yan WangH-Index: 4
#2Hongbing Wang (China University of Petroleum)H-Index: 6
Last. Songqing Hu (China University of Petroleum)H-Index: 15
view all 5 authors...
Abstract Dissipative particle dynamics (DPD) simulations were applied to investigate the effect of SiO2 nanoparticles (SNPs) modified with different tertiary amine chain length and concentration on O/W emulsion properties, the influence mechanism was also revealed from the molecular level. On this basis, the influence of the modified SNPs volume fraction in the emulsion system was studied. The results showed that with the increase number of tertiary amine chain alkyl carbon, the stability of the...
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#1Hongbing WangH-Index: 6
#2Ji LiuH-Index: 1
Last. Songqing HuH-Index: 15
view all 7 authors...
Abstract In the lifting process of drainage gas recovery, external conditions and internal components of the foam are complex. We used molecular dynamics simulation to construct a series of fatty alcohol polyoxyethylene ether sulfate (AES) foam models that could represent various foams in different lifting stages from well to ground. The effect of temperature and pressure on foam stability was investigated. We found that there are two main reasons for foam instability in the first-half stage of ...
3 CitationsSource
#1Yan Wang (China University of Petroleum)H-Index: 4
#2Hongbing Wang (China University of Petroleum)H-Index: 6
Last. Songqing Hu (China University of Petroleum)H-Index: 15
view all 7 authors...
Abstract In the present study, SiO2 nanoparticles were first hydrophobically modified and then added into anionic surfactant sodium dodecyl sulfate (SDS) stabilized water-based foam to improve the foam stability. The foam stability was experimentally evaluated by measuring surface tension, Zeta potential and half-life of the foam. The foam stabilizing mechanism was also studied from a micro perspective by molecular dynamics simulation through analyzing the equilibration configuration and MSD cur...
7 CitationsSource
#1Shuangqing Sun (China University of Petroleum)H-Index: 12
#2Yan Wang (China University of Petroleum)H-Index: 4
Last. Songqing Hu (China University of Petroleum)H-Index: 15
view all 8 authors...
Abstract Experiment and molecular dynamics simulation were carried out to study the tunable stability of oil-containing SDS-stabilized Nitrogen-in-water foam. The experimental results show that the foam stability could be tuned by the concentrations of SDS and modified SiO2 nanoparticles. In the foam systems with a low SDS concentration (0.2 wt.%), the foams show poor stability and the foam stability was almost not affected by the addition of modified SiO2 nanoparticles. The foam stability was g...
11 CitationsSource
#1Zhikun Wang (China University of Petroleum)H-Index: 8
#2Shuangqing Sun (China University of Petroleum)H-Index: 12
Last. Songqing Hu (China University of Petroleum)H-Index: 15
view all 9 authors...
Self-assembly of asymmetric block copolymers (BCPs) around active pore edges has emerged as an important strategy to produce smart membranes with tunable pathways for solute transport. However, thus far, it is still challenging to manipulate pore shape and functionality for directional transformation under external stimuli. Here, a versatile strategy by mesoscale simulations to design stimuli-responsive pores with various edge decorations in hybrid membranes is reported. Dopant BCPs are used as ...
2 CitationsSource
#1Shuangqing Sun (China University of Petroleum)H-Index: 12
#2Xiqiang Zhang (China University of Petroleum)H-Index: 2
Last. Songqing Hu (China University of Petroleum)H-Index: 15
view all 8 authors...
Abstract A novel CO2/N2 switchable aqueous foam was developed using a CO2-responsive surfactant N,N-dimethyl-N-dodecyl amine (C12A) and a conventional surfactant sodium dodecyl sulfate (SDS). The performance and mechanism of this switchable foam were studied by both experiment and molecular simulation methods. Experimental results demonstrate that the foam stabilized by SDS/C12A surfactants has better stability and water carrying capacity than single C12A foam. The foam could be rapidly switched...
7 CitationsSource
#1Shuangqing Sun (China University of Petroleum)H-Index: 12
#2Xiqiang Zhang (China University of Petroleum)H-Index: 2
Last. Songqing Hu (China University of Petroleum)H-Index: 15
view all 8 authors...
Abstract Oil phase has strong hydrophobicity and weak interface tension in the foam system, which will destroy the internal structure of foam and reduce the intrinsic stability of the foam film. Coarse-grained molecular simulation techniques were employed to investigate the effect of oil phases on the structural instabilities of two typical foam systems, i.e., ionic sodium dodecyl sulfate (SDS) and nonionic pentaethylene glycol monododecyl ether (C 12 E 5 ). In both systems, the pseudo-emulsion ...
2 CitationsSource
#1Hongbing Wang (China University of Petroleum)H-Index: 6
#2Zhikun Wang (China University of Petroleum)H-Index: 8
Last. Songqing Hu (China University of Petroleum)H-Index: 15
view all 7 authors...
Hydrophobic oil additives have been shown to be a unique class of chemicals in solution, which affect the stability of foam films. While the oil-induced destruction of a foam film has been largely understood, the entry process of the oil droplet to the foam film remains vague in experiments. Here, we perform mesoscale simulations to explore the mechanism of the oil droplet entering the gas/water interface of a foam film composed of sodium dodecyl sulfate (SDS). The microscopic entry process of t...
9 CitationsSource
#1Songqing Hu (China University of Petroleum)H-Index: 15
#2Qianqian Zhu (China University of Petroleum)H-Index: 2
Last. Shuangqing Sun (China University of Petroleum)H-Index: 12
view all 6 authors...
Abstract Self-assembly of polymer and surfactant mixtures has attracted great interests because of its potential applications, ranging from tertiary oil recovery to drug delivery. However, the mechanism by which the hydrolysis degree of polymers promotes morphology transition is still experimentally challenging. In this study, self-assembly of the cationic surfactant dodecyltrimethylammonium bromide (DTAB) and anionic polyelectrolyte partially hydrolyzed polyacrylamide (HPAM) mixture was investi...
5 CitationsSource