JOURNAL OF APPLIED POLYMER SCIENCE
·
2023
·Vol. 140
·期 10
·e53594
·
IF 3
Zejun Zhang,Fan Ye,Guosheng Ai,Huanyu Liu,Guanxin Zeng,Liwei Shen,Ying Yang,Huaikui Yuan,Xuening Feng,Yuanzhu Mi
A highly branched PNDC demulsifier with 2,6-naphthalenedicarboxylate as centronucleus was prepared by an efficient “one-pot” strategy. The product was characterized by FT-IR, 1 H-NMR, and TGA. The bottle test was performed to explore the effect of temperature, settling time, pH value, and concentration on the demulsification efficiency (DE). The DE reached an optimal value of 94.63% when the concentration of PNDC, settling time and operated temperature were 100 mg/L, 60 min and 70°C, respectively. Also, the DE could reach 91.58% when the concentration was only 20 mg/L at the same conditions. It showed that PNDC had an excellent performance in W/O emulsions with an extremely low concentration. Especially, PNDC could be used over a wide pH range (4–12) and high salinities, indicating that it had a good salt, acid and alkaline tolerance. In addition, the interfacial tension (IFT), surface tension (SFT), elastic modulus and micrograph analysis were carried out to investigate the possible mechanism. This work provides a highly branched demulsifier with high DE for the demulsification of stable W/O emulsions.
研究领域:
化学工程
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材料科学
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产品关联
DOI
高影响因子
JOURNAL OF CHEMICAL PHYSICS
·
2024
·Vol. 160
·期 19
·
IF 3.1
Zhang Shengjiang,Xin Yujia,Sun Yanan,Xi Ziheng,Wei Gan,Han Meng,Liang Bing,Ou Panpan,Xu Kangzhen,Qiu Jiangyuan,Huang Zaiyin
Surface tension and interfacial tension are crucial to the study of nanomaterials. Herein, we report a solubility method using magnesium oxide nanoparticles of different radii (1.8–105.0 nm, MgO NPs) dissolved in pure water as a targeted model; the surface tension and interfacial tension (and their temperature coefficients) were determined by measuring electrical conductivity and combined with the principle of the electrochemical equilibrium method, and the problem of particle size dependence is discussed. Encouragingly, this method can also be used to determine the ionic (atomic or molecular) radius and Tolman length of nanomaterials. This research results disclose that surface/interfacial tension and their temperature coefficients have a significant relationship with particle size. Surface/interfacial tension decreases rapidly with a radius <10 nm (while the temperature coefficients are opposite), while for a radius >10 nm, the effect is minimal. Especially, it is proven that the value of Tolman length is positive, the effect of particle size on Tolman length is consistent with the surface/interfacial tension, and the Tolman length of the bulk does not change much in the temperature range. This work initiates a new era for reliable determination of surface/interfacial tension, their temperature coefficients, ionic radius, and Tolman length of nanomaterials and provides an important theoretical basis for the development and application of various nanomaterials.
研究领域:
物理化学
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材料科学
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DOI
PubMed
高影响因子
TENSIDE SURFACTANTS DETERGENTS
·
2017
·Vol. 54
·期 2
·165-170
·
IF 0.869
Ruixia Niu,Jingling Wang,Wenyi Wang,Biao Long,Hua Song,Chao Wang,Daqiang Wang,Lingzhi Liao
Series of bi-component nonylphenol alkyl sulfonate surfactants (C 12 /C n -NPAS, n = 8, 10, 14, 16) were synthesized through sulfonation-alkylation-neutralization using a mixture of linear alpha olefin (C 12 -olefin and C n -olefin, n = 8, 10, 14, 16), SO 3 and nonylphenol as raw materials. The effect of the raw materials composition on the properties, such as surface tension, interfacial tension, wettability, foam properties of the prepared C 12 /C n -NPAS ( n = 8, 10, 14, 16) surfactants was systematically investigated. The critical micelle concentrations (CMC) of C 12 /C 8 -NPAS, C 12 /C 10 -NPAS, C 12 /C 14 -NPAS and C 12 /C 16 -NPAS are 0.42, 0.26, 0.22 and 0.40 mmol · L −1 , and surface tensions at CMC (γ CMC ) are 34.7, 27.9, 31.8 and 33.3 mN · m −1 , respectively. Compared with SDBS and HABS, the surface properties of the prepared C 12 /C n -NPAS are superior to traditional surfactants. Interfacial tension between Daqing crude oil and weakly alkaline ASP oil flooding system containing 0.1 wt% of C 12 /C 14 -NPAS could reach an ultralow level of 9.78 × 10 −3 mN · m −1 , which is lower than that for C 12 -NPAS and HABS. C 12 /C 10 -NPAS shows better wetting performance and foamability and foam stability than other synthesized surfactants.
研究领域:
化学工程
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界面科学
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石油工程
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DOI
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
·
2025
·
IF 5.2
Shuyan Chen,Qin Lei,Guoxing Cai,Fang Wang,Jie Hu,Xueliang Li,Jianan Zhang
This study introduced a novel surfactant with outstanding surface and interfacial properties: the asymmetric lignin-based Gemini surfactant (ALGS). And this surfactant was synthesized by integrating a Gemini structure with a biomass surfactant of lignin-amine. Subsequently, comprehensive investigations into the physico-chemical properties of ALGS were conducted. Surface tension measurements revealed that the critical micelle concentration (CMC) of ALGS ranged from 0.0098 mmol/L to 0.072 mmol/L, signifying their high surface activity. And the ALGS surfactants significantly reduced the interfacial tension (IFT) between Huabei crude oil and brine to ultra-low levels (<10 −3 mN/m) without any additives. Moreover, the ALGS surfactants exhibited excellent emulsifying abilities and superior salt resistance, also they effectively altered the wettability of quartz surfaces from oil-wet to water-wet. Adsorption studies showed that the ALGS surfactants had a low adsorption capacity on quartz sand, with an upper limit of less than 0.50 mg/g. In core flooding experiments, the ALGS surfactants could enhance the oil recovery by 21.15 wt% with the addition of polymer. These promising results indicate the potential of ALGS surfactants for use in chemical enhanced oil recovery (EOR).
研究领域:
化学工程
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石油工程
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材料科学
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产品关联
DOI
高影响因子
AICHE JOURNAL
·
2020
·Vol. 66
·期 8
·e16257
·
IF 3.519
Bo Wang,Han Zhou,Xiong Yu,Shan Jing,Qiang Zheng,Wenjie Lan,Shaowei Li
Interfacial tension is an essential physical property in two-phase flow, and it changes due to the mass transfer. The measurement of dynamic interfacial tension (DIFT) in such a condition is a difficult problem. In the previous study (Zhou et al., Chem Eng Sci. 2019; 197:172–183), we presented the quantitative relation between the droplet breakup frequency function (DBFF) and interfacial tension. It is found that the DBFF is highly depended on interfacial tension. Therefore, the DBFF is a suitable parameter to quantitatively characterize the interfacial tension. Based on this concept, the DIFT in the column is determined by regression method after the DBFF under mass transfer condition is measured. It is found that the DIFT is smaller than the static interfacial tension. This result indicates that interphase mass transfer leads to decreasing of the interfacial tension. The decreasing extent of the DIFT has a positive correlation with the mass transfer flux.
研究领域:
化学工程
·
流体力学
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DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2019
·
IF 3.131
Mengdie Lv,Cong Luo,Jian Yang,Yawen Zhou,Changyao Liu,Baocai Xu
Effect of the numbers of oxypropylene on dynamic interfacial tensions (IFT) of five extended surfactants C 12-14 P m E 2 S (m = 0, 3, 5, 8 and 12) were investigated. The effects of electrolyte (NaCl and CaCl 2 ) concentration, salinity, surfactant concentration were studied in detail. The IFTs between C 12-14 P m E 2 S aqueous solutions and n-decane obtained ultralow range at optimum NaCl concentration expect C 12-14 E 2 S. The optimum salinity (S * ) decreased with increase of number of oxypropylene. Also, the IFTs of C 12-14 P 8 E 2 S and C 12-14 P 12 E 2 S approached or obtained ultralow IFT in a wide range of CaCl 2 concentrations. The IFTs between C 12-14 P 12 E 2 S aqueous solution and n-decane decreased as salinity increased. With increasing surfactant concentration, the values of IFT decreased initially and then increased.
研究领域:
化学工程
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界面化学
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DOI
高影响因子
RSC Advances
·
2016
·Vol. 6
·期 68
·64121-64128
·
IF 3.289
Xujuan Huang,He Liu,Shibin Shang,Zhaosheng Cai,Jie Song
Analysis of the equilibrium and dynamic surface tension of epoxidized soybean oil grafted hydroxyethyl cellulose (H-ESO-HEC) surfactants with different molecular weights were carried out at pH values that ranged from 8 to 13. A variation in the surface activity of the H-ESO-HEC surfactants was found in the premicellar concentration range because of the formation of surface-active premicellar species, depending on the pH and surfactant concentration. The H-ESO-HEC polymeric surfactants displayed excellent surface properties at pH values that ranged from 9 to 10, and the critical micelle concentration decreased with increasing molecular weight, as expected. The adsorption behavior of H-ESO-HEC polymeric surfactants at the air/solution interface was analyzed by using the Ward and Tordai equation. The effective diffusion coefficients of H-ESO-HEC polymeric surfactants increased with pH values, with the exception of pH 13, and also improved with increasing molecular weight. Furthermore, H-ESO-HEC surfactants with higher molecular weights had larger micelles.
研究领域:
化学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2015
·
IF 2.752
Qi-Qi Zhang,Bang-Xin Cai,Wen-Jie Xu,Hong-Ze Gang,Jin-Feng Liu,Shi-Zhong Yang,Bo-Zhong Mu
Bio-based surfactants have attracted increasing attention due to their renewable resources and excellent surface properties. Novel zwitterionic surfactant derived from castor oil was prepared using a facile and high-yield route and its performance for oil recovery was also evaluated. The surface tension of the surfactant solution reached 30.7 mN/m at its critical micelle concentration value of 7.08 × 10 −6 mol/L. The interfacial tension between crude oil and water could be reduced to ultra-low value as 5.4 × 10 −3 mN/m at a low dosage of 0.010 g/L in aqueous solution with the absence of any extra alkali. When used as dispersant, the dispersion effectiveness of crude oil was 64.69%. Meanwhile, the bio-based surfactant demonstrated strong electrolyte tolerance, temperature resistance and thermostability, better wetting and foaming performance, which implied bio-based surfactants had great potential to replace traditional petroleum-based surfactants in petroleum industries, in particular, in enhanced oil recovery and oil spill disposal processing.
研究领域:
石油化学
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环境科学
·
材料科学
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DOI
高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2020
·
IF 3.871
Xiaoke Ma,Bing Liu,Tianxiang Ma,Hai-Kui Zou,Guang-Wen Chu,Bao-Chang Sun,Liangliang Zhang,Yong Luo,Jian-Feng Chen
In this work, petroleum sulfonate (PS), which can be used for enhanced oil recovery (EOR), was synthesized by sulfonation of distillate oil using gaseous SO 3 in a rotating packed bed. The prepared PS was characterized by FT-IR, NMR, negative electrospray ionization fourier transform ion cyclotron resonance mass spectrometry [(−) ESI FT-ICR MS] and thermal gravimetric analysis (TGA). Results showed that the PS contains N1, O1, O2, O3, N1O2, O3S, O4S, and N1O3S classes, among which O3S, O4S, and N1O3S are the three main classes. And the chemical composition of the PS was obtained by the combined analysis of the double-bond equivalent (DBE) and carbon number (CN). TGA results showed that PS is thermally stable at the conventional reservoir temperature (less than 200 °C). In addition, the EOR performance of PS was studied by measuring surface tension, interfacial tension (IFT), wettability alteration and core-flooding experiments. Critical micelle concentration (CMC) of the prepared PS with a value of 0.2% was also determined by surface tension method. An ultra-low oil-water IFT value 1.327 × 10 −3 mN/m was obtained at the CMC of PS solution. It was also found that adding PS into brine can decrease the contact angle below 90°, indicating that it can alter the rock wettability from oil-wet to water-wet surface which contributes to enhancing oil recovery. Finally, core-flooding experiments were carried out with different PS concentrations. The results showed that an additional recovery of about 30% after conventional water flooding can be obtained at a PS concentration of 0.3%. This study indicated that the PS synthesized by gas-phase SO 3 sulfonation in RPB has good EOR performance, and the work is helpful for the learning of the relationship between PS composition and EOR performance and give the guidance for PS’s synthesis.
研究领域:
化学工程
·
石油工程
✓ 已验证
DOI
高影响因子
Scientific Reports
·
2024
·Vol. 14
·期 1
·1-11
·
IF 3.8
Duan Yongwei,Li Yanpeng,Chen Boru,Ai Chi,Wu Jun
Aiming at oil extraction from a tight reservoir, the Jilin oil field was selected as the research object of this study. Based on the molecular structures of conventional long-chain alkyl anionic surfactants, a new temperature-resistant anionic/nonionic surfactant (C 8 P 10 E 5 C) was prepared by introducing polyoxyethylene and polyoxypropylene units into double-chain alcohols. The resulting structures were characterized by Fourier transform infrared spectroscopy (FT-IR), nuclear magnetic resonance spectroscopy ( 1 H-NMR), and electrospray ionization mass spectrometry (ESI–MS). Then, based on surface tension, interfacial tension, adsorption resistance, wettability, and emulsification performance tests, the performance of C 8 P 10 E 5 C was evaluated. The FT-IR, ESI–MS, and NMR spectra confirmed that C 8 P 10 E 5 C was successfully prepared. The critical micelle concentration (CMC) of C 8 P 10 E 5 C in water was 2.9510 × 10 −4 mol/L (the corresponding mass concentration is 0.26%), and the surface tension of the aqueous C 8 P 10 E 5 C solution at this concentration was 30.5728 mN/m. At 0.3% concentration, the contact angle of the C 8 P 10 E 5 C solution was 31.4°, which is 60.75% lower than the initial contact angle. Under high-temperature conditions, C 8 P 10 E 5 C can still reduce the oil–water interfacial tension to 10 −2 mN/m, exhibiting good temperature resistance. At 110 °C, upon adsorption to oil sand, the C 8 P 10 E 5 C solution could reduce the oil–water interfacial tension to 0.0276 mN/m, and the interfacial tension can still reach the order of 10 −2 mN/m, indicating that C 8 P 10 E 5 C has strong anti-adsorption capability. Additionally, it has good emulsifying performance; upon forming an emulsion with crude oil, the highest drainage rate was only 50%. The forced imbibition oil recovery of C 8 P 10 E 5 C is 65.8%, which is 38.54, 24.22, and 27.25% higher than those of sodium dodecyl benzene sulfonate, alkyl polyoxyethylene ether carboxylate, and alkyl ether carboxylate, respectively.
研究领域:
石油工程
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化学工程
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
·
2024
·
IF 5.3
Ying Yang,Yonggang Deng,Yu Sun,Bin Li,Zejun Zhang,Liwei Shen,Xuening Feng,Fan Ye,Yuanzhu Mi
The treatment of water-in-oil (W/O) emulsions has always been a challenge in the petroleum industry. In this article, a tetra-branched bicationic liquid demulsifier (PAL-Cl) was prepared. The structure of PAL-Cl was confirmed by Fourier-transform infrared spectrum (FT-IR), Nuclear magnetic resonance spectrum (NMR) and Gel permeation chromatography (GPC). Some factors affecting demulsification efficiency (DE) such as dosage, salinity, pH, temperature, etc. were explored in detail. The DE reached 96.5 % after demulsifying with 50 mg/L of PAL-Cl at 70 °C for 240 min. Especially, a relatively lower temperature of 40 °C could obtain the DE of 94.1 % with 250 mg/L of PAL-Cl for 360 min. Moreover, PAL-Cl has outstanding acid, alkali and salt resistance. In addition, the demulsification mechanism was in detail investigated by surface tension (SFT), interfacial tension (IFT), competitive adsorption experiments, coalescence time of droplets (CT), three-phase contact angle (CA), zeta potential and micrographs.
研究领域:
石油化学
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界面化学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
·
2018
·
IF 4.513
Yanyun Bai,Huijun Liu,Xiaoyuan Ma,Xiumei Tai,Wanxu Wang,Zhiping Du,Guoyong Wang
Four glycosyl-modified polysiloxane (GPSO) biosurfactants were designed and synthesized via two-step reactions using green materials. The physicochemical properties: surface activity and aggregation behaviors in aqueous solution were systematically investigated. Investigation of the surface tension indicates that GPSO have relatively low critical aggregation concentrations (CAC) and surface tensions at CAC (γ CAC ) compared with hydrocarbon surfactant. Adsorption at the air-water interface and the formation of micelles in aqueous are spontaneity and the tendencies of adsorption are favored over the process of micellization . Dynamic surface tension results indicate that D-glucoheptono-1, 4-lactone modified polysiloxanes (GHL@Si) have good diffusion ability than that of glucono-δ-lactone modified polysiloxanes (GL@Si). Transmission electron microscopy (TEM) and Dynamic light scattering (DLS) results indicate that part of biosurfactants can form spherical aggregates.
研究领域:
材料科学
·
物理化学
·
界面科学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）