JOURNAL OF MOLECULAR LIQUIDS
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2018
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IF 4.513
Han Jia,Xu Leng,Daqian Zhang,Peng Lian,Yipu Liang,Hongyan Wu,Pan Huang,Jingping Liu,Hongtao Zhou
Supramolecular chemistry provides a facile and feasible method to construct desired compounds via noncovalent interactions. Based on the host-guest recognition, the surfactant/cyclodextrin (CD) inclusion exhibited the excellent performance in potential application of various fields. The sodium dodecyl sulfate (SDS)/β-CD inclusion was introduced to chemical enhanced oil recovery. The fabrication of SDS/β-CD inclusion seriously affected the SDS ability to reduce the interfacial tension (IFT) between a model oil (toluene and n -decane, v/v = 1:1) and water, which may be the key factor to reduce the adsorption loss of SDS molecules via the addition of β-CD molecules. To reactivate the interfacial activity of SDS molecules, we employed the adamantanamine chloride (AD) to the SDS/β-CD inclusion solutions. Interestingly, the electrostatic attraction between AD/β-CD inclusion and SDS molecule dominated the change tendency of IFT values, which was further verified by the systematical investigations on the salinity and temperature effects on the IFT.
研究领域:
化学
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超分子化学
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石油工程
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高影响因子
FIBERS AND POLYMERS
·
2023
·Vol. 24
·期 5
·1707-1715
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IF 2.5
Li YunJing,Wang Lei,Wang Rui,Hao Longyun
In this research, sodium alginate (SA) was first oxidized by sodium periodate to convert its 1,2-hydroxyl into aldehyde groups. Then, the cinnamamide was grafted with it through a mild Schiff reaction to get the hydrophobically modified SA (HMSA). The structure of HMSA was determined by FT-IR, 1 H-NMR, and XPS analysis. Subsequently, it was utilized to improve the dispersibility of sodium dodecyl sulfate (SDS) to copper phthalocyanine pigment (CuPc) in aqueous medium. It was found that when the addition amount accounted for 30% of SDS, HMSA could make the dispersion obtain the best settlement stability. In addition, the addition of HMSA could significantly improve the dispersion stability to different pH and temperatures. The results of Turbiscan Stability Index ( TSI ) measurement directly indicated that the TSI index of the CuPc dispersion by SDS/HMSA was lower than that by SDS alone. SDS and HMSA could form an SDS/HMSA composite through hydrophobic interactions or hydrogen bond forces to produce both steric and electric repulsive forces for better stability of CuPc dispersion.
研究领域:
材料科学
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化学工程
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高影响因子
Applied Water Science
·
2021
·Vol. 11
·期 3
·1-14
·
IF 3.874
Wen Gongpu,Chen Kun,Zhang Yanhong,Zhou Yue,Pan Jun,Wang Qian,Sun Siyuan,Wang Zhaohui
A novel strategy was proposed to fabricate alkali-resistant PVDF membrane via sodium lauryl sulfate (SDS) attached to the surface of membrane and immobilized by UV-curable polyester acrylate and tri(propylene glycol) diacrylate (TPGDA). The attached anionic surfactant, SDS, on the membrane surface can resist the alkali corrosion by NaOH, and the curing of the resin can immobilize the SDS on the membrane firmly. Due to the unique alkali resistance of SDS and resin formed, the UV-curable resin-modified PVDF membrane showed greatly enhanced alkali-resistant ability. Characterization of SEM and FTIR showed that polyester acrylate and TPGDA were cured successfully under the action of 1-hydroxycyclohexyl phenyl ketone (184) and ultraviolet light. Whiteness, differential scanning calorimeter and X-ray photoelectron spectrometer characterization showed that the modified PVDF membrane had a lower degree of dehydrofluorination than the pristine PVDF membrane after alkali treatment. Results of the detailed alkali-resistant analysis indicated that the F/C ratio of the UV-curable resin-modified PVDF membrane decreased by 2.6% after alkali treatment compared to pristine PVDF membrane decreased by 19.28%. The alkali-resistant performance was mainly attributed to the immobilized SDS. This study provided a facile and scalable method for designing alkali-resistant PVDF membrane, which shows a promising potential in the treatment of alkaline wastewater and alkaline-cleaning PVDF membrane.
研究领域:
材料科学
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环境工程
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2021
·
IF 8.128
Shuo Lu,Qiliang Mei,Jiayi Chen,Zhe Wang,Wenhong Li,Chunyan Feng,Xuefeng Li,Jinfeng Dong
Hypothesis Shear-thickening micelles were mostly made of cationic surfactants , but shear-thickening was rarely reported in the zwitterionic/anionic surfactants. Since wormlike micelles were essential in shear-thickening systems, it should be common for the hybrid wormlike micelles formed by zwitterionic/anionic surfactants, and their fundamental features need to be clarified. Experiments The micellization of zwitterionic surfactant homologies alkyl dimethyl amidopropyl hydroxyl sulfobetaine (AHSB) and sodium dodecyl sulfate (SDS) in brine was studied, and various environmental factors were considered systematically. Light scattering, rheology, zeta potential , 1 H NMR and cryo-TEM techniques were employed to characterize the AHSB/SDS wormlike micelles. Findings AHSB/SDS hybrid wormlike micelles were formed in a wide x SDS region to endow them with apparent viscosities, in which the electrostatic and hydrophobic interactions between AHSB and SDS molecules were critical. AHSB with the longer tail, the higher c AHSB and c NaCl were advantageous to enhance the viscosity because of the longitudinal growth of wormlike micelles. The shear-thickening AHSB/SDS samples were commonly composed of unbranched wormlike micelles with various length, and the shear-induced alignment of wormlike micelles was the major cause as verified by cryo-TEM. Moreover, the quantitative relationships on the critical shear rate ɣ̇ c were established, and the activation energies were obtained from the temperature-dependent ɣ̇ c .
研究领域:
物理化学
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材料科学
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界面化学
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高影响因子
APPLIED SURFACE SCIENCE
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2026
·
IF 6.6
Xinyu Yuan,Jianwen Hu,Junjie Fan,Jingwen Wang,Chunling Li,Shuangqing Sun
Systematic comparison of ligand functionalization effects on surface properties and demulsification using UiO-66. • Hydrophobic (UiO-66-4F) and electrostatic (UiO-66-NH 2 ) mechanisms both achieve ∼80% demulsification efficiency. • The hydrophobic mechanism is more versatile across different surfactants and oil phases than the electrostatic one. • Surface wettability and charge are key factors governing demulsification performance. • The findings provide insights into tailoring MOF surface chemistry for demulsifier development. The role of surface functional groups in metal–organic frameworks (MOFs)-based demulsification remains poorly understood. Herein, four isostructural UiO-66 derivatives (–H, –NH 2 , –NO 2 , –F) were systematically evaluated as discrete demulsifiers for SDS‑stabilized oil‑in‑water emulsions. The study combined batch demulsification tests with measurements of SDS and toluene adsorption, dynamic interfacial tension, surface wettability, and zeta potential. The hydrophobic fluorinated sample (UiO-66-4F) achieved approximately 80% demulsification efficiency, attributed to strong hydrophobic interactions. The hydrophilic yet positively charged amino‑functionalized sample (UiO-66-NH 2 ) also achieved about 80% efficiency, but via electrostatic attraction to the negatively charged oil‑water interface. Unmodified UiO-66 and the nitro derivative (UiO-66-NO 2 ) exhibited lower efficiencies (<65%). Further tests showed that UiO-66-NH 2 was effective only for anionic surfactants, whereas UiO-66-4F was less affected by surfactant charge. Both MOFs showed higher efficiency for aromatic oils than for aliphatic oils. These results identify two distinct design paradigms – hydrophobic capture and electrostatic neutralization – for MOF‑based particle demulsifiers. Tailoring surface hydrophobicity or charge provides effective demulsification depending on the target emulsion chemistry. This work advances the understanding of structure–property relationships in MOF demulsifiers and offers practical guidelines for developing separation materials. Download: Download high-res image (215KB) Download: Download full-size image
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
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2026
·
IF 3.1
Weiyi Kong,Min Li,Dingguang Wu,Kaizhou Zhang,Jinbo Jin
In this study, PVDF/SMA membranes were fabricated via non-solvent induced phase separation(NIPS), followed by grafting of polyethyleneimine (PEI) onto the membrane surface through reaction with the anhydride groups of SMA, yielding PVDF/SMA-PEI membranes. Owing to the considerable free volume of PEI chains, stacking tends to occur during cross-linking with SMA, resulting in a loose selective layer and poor retention of small- to medium-sized dye molecules. To address this, the small-molecule additive sodium dodecyl sulfate (SDS) was introduced into the PEI solution. The electrostatic interaction between the sulfate ions of SDS and PEI promotes a more uniform distribution of PEI on the membrane surface, reducing inter-chain aggregation and forming a denser selective layer. The resulting PEI-SDS membrane maintained a high pure-water flux of 220 L/m 2 ·h while achieving methyl blue, indigo carmine, and acid fuchsin rejection rates of 98.86%, 99.57%, and 86.77%, respectively. In conclusion, this work provides a simple method for preparing highly efficient positively charged membranes for dye removal.
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高影响因子
CERAMICS INTERNATIONAL
·
2021
·
IF 4.527
Wenxiao Zhang,Ying Feng,Yifan Niu,Ting Liu,Xiaoyu Zhai,Jiaxiang Liu
SiC is a promising functional ceramic material with many great properties. High concentrated SiC slurry with excellent rheology and stability is required in some processes of ceramic forming. In this work, the dispersion of SiC powders was obviously improved by ternary modifiers: γ-(2,3-epoxypropoxy) propytrimethoxysilane (KH560), sodium humate and sodium dodecyl sulfate (SDS). Modified SiC slurry showed the lowest viscosity of 0.168 Pa s at a solid content of 50 vol%. The maximum absolute value of zeta potential of SiC increased from 47.3 to 61.6 mV by modification. Sedimentation experiments showed that a highly stable suspension of modified SiC was obtained at pH 10. SiC green body with high density of 2.643 g/cm 3 was prepared with modified powders by slip casting. X-ray photoelectron spectra (XPS) and thermogravimetry (TG) measurements indicated the adsorption of modifiers on SiC surface. Therefore, modified SiC powders could stably disperse in aqueous media due to the increase of electrosteric repulsion between particles. The novel strategy used in this study could further improve the dispersion of SiC powders.
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高影响因子
GEOFLUIDS
·
2024
·Vol. 2024
·期 1
·9112308
·
IF 1.2
Hongmei Li,Yun Zhao,Jie Deng,Jing Xie,Weiqi Zhou,Yiting Liu,Luming Li,Futing Xia,Rui Qi
The optimization of coal dust management in fluidized mining environments is of paramount importance, yet it is currently impeded by a gap in understanding chemical dust suppression mechanisms. This study combines indoor experiments with molecular simulation to investigate the mechanisms by which three anionic surfactants with different hydrophilic and hydrophobic groups (SDBS, SDS, and SLS) influence coal wettability. Using hydrophobic bituminous coal as the experimental subject, basic physical and chemical properties are analyzed through proximate analysis, XRD, and FTIR. The effect of different surfactants on coal wettability is characterized based on sedimentation experiments, while the coal–surfactant–water three-phase model examines the equilibrium adsorption configuration, water molecule diffusion coefficient, and interaction energy in different adsorption systems. The surface free energy of coal dust and its components is measured before and after surfactant adsorption, verifying the adsorption-wetting mechanism of surfactants at the coal–water interface. Results show that anionic surfactants enhance wettability through a bidirectional adsorption mechanism at the coal–water interface: the hydrophobic tail adheres to the coal surface via van der Waals forces, while the hydrophilic head faces the water phase, driven by electrostatic and hydrogen bonding interactions. This coordinated adsorption process alters water diffusion and the surface free energy of coal, thereby improving wettability. SDBS, due to its benzene ring, significantly amplifies the bidirectional adsorption effect, achieving the most substantial improvement in coal dust wettability. The findings provide a robust theoretical framework for developing dust control strategies in fluidized mining operations, advancing the field toward more efficient and sustainable mining practices.
研究领域:
矿业工程
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化学工程
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计算科学
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高影响因子
EUROPEAN PHYSICAL JOURNAL E
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2014
·Vol. 37
·期 9
·1-7
·
IF 2.183
Zhang Yongjian,Qian Yimeng,Liu Zhengtang,Li Zhiguang,Zang Duyang
Abstract. The cracking behavior accompanied with the drying of colloidal droplets containing polytetrafluoroethylene (PTFE) nanoparticles was studied. During evaporation, due to the stretching effect of the liquid zone, the receding wet front leads to the formation of radialized surface wrinkling in the gel zone. This indicates the building of a macroscopic stress field with a similar distribution. As a result, the cracks in the deposited films are in a radial arrangement. The propagation velocity of the cracks depends on the thickness of the film, ∼ H
3/5 . In addition, sodium dodecylsulfate (SDS) additives can be used to tune crack behavior by causing a reduction of the capillary force between particles. The results highlight the significance of the receding wet front in building the drying deposition stress field and may be helpful in other fields related to drying and cracking processes. Graphical abstract
研究领域:
胶体科学
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软物质物理
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材料表面工程
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干燥动力学
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薄膜沉积
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DOI
高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2026
·
IF 5.1
Kang Zhou,Shuda Liu,Shoutian Qiu,Lei Wang,Xiang Ying,Ruofan Jiang,Yifei Rui,Daiwen Li,Yong Wang
The separation of ethanol from dilute aqueous solutions, such as fermentation broths, is critically important for biofuel production. Membrane distillation (MD) with porous membranes usually suffers from insufficient selectivity, while pervaporation (PV) with dense films is inadequate in permeability. To overcome this trade-off, we developed a novel hydrophobic membrane via the selective swelling of a polystyrene- b -polydimethylsiloxane- b -polystyrene triblock copolymer (SDS). By precisely controlling the swelling agent and duration, we engineered the optimal membrane with a tailored pore structure featuring interconnected nanopores and partially blind pores, along with a PDMS-enriched pore surface. This unique architecture enables a multipath permeation mechanism combing solution-diffusion and the transport pathway for molecules under vapor–liquid equilibrium within pore channels. The optimized membrane demonstrated an exceptional combination of high permeation flux and separation factor for a 5 wt% ethanol/water mixture at 50 °C, yielding a remarkable pervaporation separation index (PSI) of 38.2 kg·m −2 ·h −1 . This performance surpasses many PDMS-based PV and conventional MD membranes. This work presents a simple and efficient strategy for fabricating high-performance membranes that simultaneously achieve high flux and selectivity, offering significant potential for advancing energy-efficient bioethanol recovery processes.
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高影响因子
APPLIED CLAY SCIENCE
·
2021
·
IF 5.467
Yuchuan Liu,Zongxue Yu,Qiuxiang Wang,Ximei Zhu,Runxuan Long,Xuyang Li
Layered double hydroxides (LDHs) is a typical type of anionic clay minerals. In this study, an SDS-LDH with sodium dodecyl sulfate (SDS) intercalation was prepared by the ion exchange method, and the modified SDS-LDH was successfully combined with graphene oxide (GO). In the presence of dopamine, partial reduction of GO to reduced graphene oxide (RGO). RGO/PDA/SDS-LDH (RPS) composite material was prepared successfully and used in the field of membrane separation . The RPS-2 composite membrane combines the advantages of GO and SDS-LDH, which can increase GO flux while maintaining a high rejection rate. The flux was increased from 10.21 L·m −2 h −1 bar −1 of GO to 79.24 L·m −2 h −1 bar −1 of RPS-2, and the rejection rate of various dyes was above 97%. The rejection rate of methylene blue (MB) 97.34% was maintained after 10 cycles, and its flux loss rate is only 45.32%. The composite membrane had good stability under different pH conditions , which provides a basis for the practical application of the membrane.
研究领域:
材料科学
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环境工程
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高影响因子
JOURNAL OF MOLECULAR LIQUIDS
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2023
·
IF 6
Xiaolin Wu,Zhaowei Hou,Haifeng Wang,Yong Yang,Xiaomin Liu,Zhao Chen,Zhenggang Cui
In foam flooding, foams stabilized by conventional anionic surfactants are usually raptured in contacting with crude oil, which behaves as a strong defoamer. In this article the synergistic effects between anionic surfactant SDS and negatively charged hydrophilic silica nanoparticles in stabilization of aqueous foams were examined. The results show that in either deionized (DI) water at 25 °C or Daqing simulated connate (SC) water with a total salinity of 6,778 mg/L at 45 °C, in absence of oil adding low concentration of silica nanoparticles into the SDS aqueous solutions can improve the foam performance of SDS mainly by increasing foam stability, as indicated by a synergistic effect index Se(d/s) (ratio of the composite foaming index of dispersion to that of solution) of 2.7 to 2.8. In presence of oil the foam performance of SDS in SC water at 45 °C can still be improved as indicated by an increased Se(d/s) of 3.7, but the maximum composite forming index is catastrophically reduced from 3222 Ls in absence of oil to 470 Ls in presence of oil. As similarly charged nanoparticles the silica nanoparticles do not adsorb at gas/liquid or oil/water interface to stabilize Pickering foams or Pickering emulsions but can improve emulsification of the oil, and the emulsified oil droplets together with the silica nanoparticles distribute in aqueous lamellae enhancing liquid viscosity and slowing down the liquid drainage in the foams. However, this effect weakens at high surfactant concentration, and addition of silica nanoparticles does not significantly reduce the interfacial tensions involved. The Enter (E), Spreading (S) and Bridging (B) coefficients of the oil in the foam systems are therefore still positive. The defoaming action of the oil in this system is not eliminated by only partially inhibited by addition of silica nanoparticles.
研究领域:
石油工程
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材料科学
·
界面化学
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高影响因子
危险品化学品经营许可证（带存储）