TENSIDE SURFACTANTS DETERGENTS
·
2022
·Vol. 59
·期 3
·221-230
·
IF 1.058
Fengli Gong,Hong Xu,Jinxiang Dong
Sodium oxalate (Na 2 C 2 O 4 ) is an excellent phosphorus-free agent, but in sodium oxalate-containing detergents with sodium dodecylbenzene sulfonate (SDBS) and sodium carboxymethyl cellulose (CMC), significant ash deposition occurs on cotton fabrics. SDBS is the main anionic surfactant in modern detergents and cotton fiber is the most commonly used textile fiber. In this study, sodium lignosulfonate (LS) was investigated for its ability to prevent redeposition in SDBS-Na 2 C 2 O 4 -CMC-LS formulations. The effects of LS on ash content, whiteness, optimum washing temperature, calcium oxalate morphology, zeta potential and surface tension were carefully analyzed. The results showed that the addition of LS significantly improved the prevention of ash deposits on cotton fibers. The ash content was less than 0.46% and a small amount of particles were scattered on the cotton fibers. LS showed good dispersibility but had little effect on the washing power and zeta-potential.
研究领域:
材料科学
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纺织工程
·
表面化学
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DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2018
·
IF 2.829
Ling Zhang,Changming Zhao,Yulian Jiang,Yue Wang,Wensheng Yang,Tiexin Cheng,Guangdong Zhou
The effect of sodium dodecyl benzene sulfonate (SDBS) on morphology and structure of calcium silicate hydrate (CSH) prepared via precipitation in solution were investigated by XRD , FT-IR and SEM techniques. The formation mechanism of spherical shell of CSH was also discussed. The results suggested that different concentrations of SDBS affect differently the structure and morphology of CSH. When the SDBS concentration was less than the critical micelle concentration (CMC), the agglomeration among CSH particles reduced, the degree of order of CSH increased and the polymerization degree of Si-O decreased. When the SDBS concentration was greater than CMC, the spherical micelles were fabricated in aqueous solution, which induced CSH to form a spherical structure in the shape of spherical micelle rather than produce a layered CSH under the normal condition. After centrifugation and vacuum drying procedures, internal micelles of CSH spherical particles disappeared and turned into spherical shell structures. This experiment provides a reliable method for the preparation of CSH with specific morphology and size, which can simplify experimental conditions and increase the possibility of its application in the field of drug delivery.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
·
2018
·
IF 2.891
Sujitraj Sheth,Mengyuan Li,Qijun Song
Due to clinical importance, detection of dopamine by using easy and rapid method is still ongoing challenge. Here we present a simple and quite efficient method for dopamine (DA) detection in alkalescent medium using in situ prepared Ru(II) complex and sodium dodecyl benzyl sulfonate (SDBS) as highly luminescent luminophore. The luminescence enhancement in the Ru(II) complex (Ru-CIP) has been observed in the miceller medium formed by SDBS. The capability to successively quench the luminescence intensity has been tested for variety of molecules and only dopamine as analyte found to be able to quench luminescence effectively. Hence selective quenching of luminescence by dopamine was used as a tool to detect dopamine and two linear concentration ranges has been established from 0.1 μM to 1μM and from 2 μM to 10 μM with limit of detection (LOD) is 6.6 nM (S/N = 3). Spectral evidence showed that luminescence quenching mechanism arose via Forster resonance energy transfer (FRET) among oxidized DA (i.e. DA quinone) and in situ generated Ru-CIP and SDBS assembly. Due to ultra sensitivity and high selectivity of the prescribed (Ru-CIP-SDBS) luminescent probe has a strong potential for practical analytical application in clinical diagnosis.
研究领域:
分析化学
·
临床诊断
·
生物医学
✓ 已验证
产品关联
DOI
高影响因子
ENERGY & FUELS
·
2023
·
IF 5.3
Zhiqi Zhao,Xue Xia,Yanan Li,Daiwei Liu,Wei Cai,Chuanxian Li,Guangyu Sun,Bo Yao,Fei Yang
Dodecylbenzenesulfonic acid (DBSA) is injected into wellbores as an asphaltene dispersant to alleviate asphaltene deposition problems. The addition of DBSA will change the dispersion of asphaltenes in the crude oil, affecting the wax precipitation property of the crude oil as well as the adsorption behavior of asphaltenes at the oil–water interface, thus significantly altering the W/O emulsion’s stability. In order to provide better theoretical guidance for oil–water separation in oilfield gathering and production processes, in the paper, the effects of DBSA concentration (from 0 to 500 ppm) on the emulsions’ stability containing both asphaltenes and paraffin wax and the mechanism were systematically investigated at two different temperatures (30 and 15 °C) based on the wax precipitation and rheological properties of the model crude oil, the oil–water interface adsorption properties, and the macroscopic and microscopic properties of the emulsion. The outcomes demonstrated that the test temperature had a highly substantial impact on the model emulsion. The main element affecting the stability of the emulsion at 30 °C (above the wax appearance temperature (WAT)) was the interfacial structure’s strength. The low-temperature flowability of the oil phase primarily controlled the process of emulsion stabilization at 15 °C (below the WAT). Furthermore, we speculate that the wax crystals could precipitate on the surface of the emulsified droplets, which also facilitated emulsion stability at 15 °C. Combining the above experimental observations, the mechanism of DBSA concentration affecting the emulsion stability was proposed, which would contribute to solving the issues in the emulsion breaking and dewatering process of crude oil emulsions.
研究领域:
石油工程
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界面化学
·
流变学
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产品关联
DOI
高影响因子
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
·
2018
·
IF 3.412
Yuanyuan Li,Dongjie Yang,Shuo Lu,Sulin Lao,Xueqing Qiu
Alkali lignin (AL), an anionic polymer, is a byproduct of the paper industry. AL was first modified by quaternization to synthesize quaternized alkali lignin (QAL). The aim of the present study is to reveal the effects of sodium dodecyl benzenesulfonate (SDBS) on the microstructure of QAL. The interaction between SDBS and QAL is studied by means of zeta potential, fluorescence spectrophotometer, and static contact angle measurement. The results indicated that there is an electrostatic interaction and a hydrophobic interaction between QAL and SDBS. The SDBS/QAL complex can self-assemble into lignin-based colloidal spheres (LCSs) in an ethanol/water mixture, which have remarkable avermectin (AVM) encapsulation efficiency and antiphotolysis performance. The cumulative release amount of AVM encapsulated by LCS (LCS@AVM) after 72 h was 77%, and the release was still going on. The release behaviors of LCS@AVM can be controlled by adjusting the ratio (w/w) of LCS to AVM. More than 85% of AVM could be preserved even after 96 h of UV irradiation. LCS showed controlled release and UV-blocking performance for AVM.
研究领域:
材料科学
·
农业科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2017
·
IF 3.012
Jing Zhang,Xin-he Song,Sa Ma,Xue Wang,Wen-chang Wang,Zhi-dong Chen
A sensitive and selective method was developed for the electrochemical determination of dopamine by using a sodium dodecyl benzene sulfonate modified expanded graphite paste electrode (SDBS-EGPE). The SDBS-EGPE was prepared by mixing expanded graphite (EG) self-assembled with sodium dodecyl benzene sulfonate (SDBS) with solid paraffin. SDBS formed a monolayer on EG surface with a high density of negatively charged end. Compared with EGPE, SDBS-EGPE showed improved electrochemical response of dopamine (DA) due to the enhanced accumulation of protonated DA via electrostatic interactions between positively charged DA and negatively charged SDBS. Under optimal experimental conditions, the designed electrode exhibited wide linear responses to DA ranging from 0.5 μmol/L and 500 μmol/L with a low detection limit of 0.027 μmol/L at a signal-to-noise ratio of 3. The SDBS-EGPE showed a good reproducibility, stability and reusability. The SDBS-EGPE showed a high selectivity for DA in the presence of ascorbic acid (UA) and uric acid (AA) due to the electrostatic repulsions between negatively charged UA , AA and SDBS. The proposed electrode was successfully applied in the determination of DA in the commercial dopamine hydrochloride injection sample.
研究领域:
分析化学
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生物医学工程
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产品关联
DOI
高影响因子
JOURNAL OF POROUS MATERIALS
·
2016
·Vol. 24
·期 1
·65-73
·
IF 1.385
Zhang Libo,Liu Yuhang,Wang Shixing,Liu Bingguo,Peng Jinhui
Activated carbon (AC) was modified via grafting quaternary ammonium for the selective adsorption of sodium dodecyl benzene sulfonate (SDBS) from aqueous solution. The surface modification of AC was confirmed by FT-IR, XPS and Raman spectroscopy. The results showed that the modified AC selectively adsorbed the anionic SDBS. Adsorption kinetics could be well described by pseudo-second-order kinetic equation (or three-stage intraparticle diffusion mode), adsorption isotherms fitted well with Langmuir model. Quaternary ammonium on AC enhanced electropositivity and led to the selective adsorption of SDBS.
研究领域:
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2021
·
IF 5.161
Yue Sun,Cheng Li,Dengyu Fu,Haodong Hu,Ziheng Bai,Haolei Geng,Yueyang Gao,Yanji Zhu,Huaiyuan Wang
Reasonable design, preparation and application of highly effective fillers are the main challenges to significantly improve the protective performance of coatings. Herein, based on the EP coating, polyfluoroaniline@sodium dodecyl benzenesulfonate‑cerium dioxide-montmorillonite (FA@SD-CeO 2 -MMT) filler was elaborately designed. Due to the integral anti-corrosion system, the impedance value of FA@SD-CeO 2 -MMT/EP remained 1.02 × 10 11 Ω cm 2 after 90 d immersion of 3.5% NaCl. And the multi-interactions among MMT, FA@SD and CeO 2 form a trinity anti-corrosion system of passivation, hydrophobic shielding and cathodic protection , which significantly improve the anti-corrosion performance of EP coatings.
研究领域:
材料科学
·
腐蚀与防护
✓ 已验证
产品关联
DOI
高影响因子
MINERALS ENGINEERING
·
2023
·
IF 4.8
Guangfeng Dong,Peng Chen,Jie Wu,Hao Yi,Tianxing Chen,Feifei Jia,Shaoxian Song
Common reverse flotation is difficult to separate efficiently picromerite with a high halite content. This work employed direct flotation to separate picromerite and halite, using sodium dodecyl benzene sulfonate (SDBS) as a novel picromerite collector. The flotation performances were evaluated by single and real ore flotation tests, with results indicating that K + recovery was 95.89%, while Na + content was less than 2% in the concentrate at an SDBS dosage of 200 g/t, which suggested SDBS was an effective picromerite collector with excellent separation performance. The interaction mechanism was investigated by adsorption experiment, Fourier Transform Infrared Spectroscopy (FTIR), Scanning Electron Microscope and Energy Dispersive Spectrometer (SEM-EDS), and X-ray Photoelectron Spectroscopy (XPS) analysis. The adsorption experiments demonstrated that picromerite had a stronger affinity to SDBS than halite, confirming that SDBS exhibited good selectivity in the flotation of picromerite and halite. FTIR and SEM-EDS analysis revealed that SDBS adsorbed on the picromerite surface. XPS results further unveiled that SDBS chemisorbed on the picromerite surface through the strong complexation between sulfonic acid groups and Mg atoms on the picromerite surface, forming O-Mg bonds. This study provides a new perspective on the efficient separation of picromerite and halite, facilitating a high production efficiency of picromerite.
研究领域:
矿物加工工程
·
表面化学
✓ 已验证
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2021
·
IF 7.312
Wei Liu,Danyu Liu,Hao Yin,Chunyan Yang,Ke Lu
Foam fractionation is an adsorption bubble separation technique allowing recovery and immediate reuse of surfactants. This work was aimed at investigating the variations in recovery efficiency and physicochemical property of sodium dodecyl benzene sulfonate (SDBS) through multiple foam fractionation operation. First, a suitable SDBS concentration of 0.05 g/L was determined for preparing feeding solution. Subsequently, effects of volumetric air flow rate, height ratio of liquid phase and foam phase, and pore diameter of gas distributor on recovery efficiency of SDBS were investigated, respectively. Response surface methodology (RSM) was used to optimize the operating conditions of foam fractionation for separating SDBS. Under the conditions of volumetric air flow rate 80 mL/min, height ratio of liquid phase and foam phase 1:2, and pore diameter of gas distributor 0.180 mm, enrichment ratio and recovery percentage of SDBS were 134.83 ± 6.74 and 63.43 ± 3.17%, respectively. In repetitive separation experiments, the maximum separation number of recovered SDBS by foam fractionation was 3. Experimental results of surface activity and foam properties of recovered SDBS solution suggested that the interfacial adsorption and desorption processes had induced the structural transition and irreversible aggregation of SDBS molecules after multiple foam fractionation operation.
研究领域:
化学工程
·
环境科学
✓ 已验证
DOI
高影响因子
International Journal of Electrochemical Science
·
2023
·
IF 1.5
Jiansan Li,Jinye Bi,Xinyue Wang,Huajie Wang,Xiangqi Huang,Yongmei Li,Guan Wang
The polyaniline emeraldine-base form (PANI-EB) and polyaniline doped with dodecyl benzene sulfonic acid (PANI-DBSA) were prepared by chemical oxidation polymerization. The PANI-EB and PANI-DBSA were characterized by Fourier transform infrared spectroscopy (FTIR), UV–Vis absorption spectroscopy (UV–Vis), X-ray diffraction (XRD), scanning electron microscopy (SEM)and water contact angle (WCA) measurements. Subsequently, polyaniline-acrylic resin coatings were prepared with these polyaniline materials as antifouling additives. The antifouling property of the polyaniline acrylic resin coatings was determined by immersion tests and the algae inhibition tests. The anticorrosion property of the PANI-DBSA coating with a better antifouling property was proven by electrochemical impedance spectroscopy (EIS) and measurement of the potentiodynamic polarization curve. The experimental results suggested that the PANI-DBSA coating shows good antifouling performance and anticorrosion performance. The mechanisms for the antifouling and anticorrosion performances conferred by PANI-DBSA are also discussed.
研究领域:
材料科学
·
生物学
·
化学工程
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Rong Liu,Haoyu Li,Zhenzhou Fu,Hailou Wang,Jiamu Dai,Kai Dong,Ick Soo Kim,Wei Zhang
Harvesting electrical energy from water and moisture has emerged as a novel and eco-friendly energy conversion technology. Nevertheless, simultaneously achieving flexibility and continuous power generation in moist-electric fibers remains a significant challenge. Herein, we present a polyvinyl alcohol/multi-walled carbon nanotube/sodium dodecyl benzene sulfonate (PMS) filament prepared by simple continuous wet spinning, which can stably and continuously produce electric energy from both moisture and deionized water simultaneously in the form of monofilament or as fabric. In moisture environment, the PMS monofilament with a length of 2.5 cm can generate 600 mV under 95 % relative humidity and at 25 °C, and 1 cm PMS can sustain a voltage of 200 mV for over 80 h. Additionally, it exhibits a water-voltage effect, 5 cm monofilament inclined at a 60-degree angle to the liquid surface generates a peak voltage of 1.2 V. Furthermore, by weaving the filaments into fabric, three 1.5 cm × 2.5 cm PMS-fabric units in series can achieve a series voltage of 1.15 V and a parallel current of 50 μA under humidity saturation, capable of powering a digital watch for more than 1.5 h. Overall, considering the large-scale and facile fabrication, this flexible, weavable fiber-shaped hygroelectric generator could offer sustainable energy solutions and potential alternatives to conventional batteries for wearable electronics.
研究领域:
材料科学
·
能源技术
✓ 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）