JOURNAL OF MOLECULAR LIQUIDS
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2019
·
IF 4.561
Guanjia Zhao,Zemin Yuan,Mingjing Fan,Jianguo Yin,Suxia Ma
In present study, surface light scattering (SLS) was used for the simultaneous determination of liquid surface tension and kinematic viscosity of the binary and ternary mixtures of three fatty acid ethyl esters (FAEEs) and n-dodecane. The SLS apparatus was firstly checked with n-dodecane and a good agreement between our data and those from literatures could be found. By utilizing this apparatus, both properties were investigated in the temperature ranges between (308 and 413) K. Additionally, the liquid density and refractive index were determined by a densimeter between (293 and 423) K and a refractometer from (278 to 358) K, respectively. The thermophysical property data obtained in this study were correlated as polynomial equations of temperature and mole fraction of the pure components. This work provided the crucial thermophysical properties and the corresponding models in connection with the application in the design and optimization of the injection system of internal combustion engine (ICE).
研究领域:
热力学
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化学工程
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材料科学
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机械工程
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2025
·
IF 5.4
Mingjun Zou,Yikun Ji,Bin Liu,Shujuan Liu,Qian Ye,Feng Zhou
Hydrogels exhibit great potential in marine antifouling applications due to their ability to form a surface hydration layer that resists microbial adhesion. However, their practical application is often hindered by poor mechanical properties and limited antifouling performance. To address these challenges, nanomaterials have been employed to enhance hydrogel performance. Herein, we functionalized MXene nanosheets by grafting methacryloxyethyltrimethyl ammonium chloride (METAC) microgels, followed by electrostatic adsorption of sodium lignosulfonate (SLS), resulting in functionalized MXene nanosheets with enhanced antibacterial and antifouling properties. These nanosheets were then embedded within hydrogel matrix to form nanocomposite hydrogels. The reinforced internal crosslinking network significantly improved the mechanical performance, increasing tensile stress from 55 KPa to 167 KPa and tensile strain from 636 % to 971 %. The MXene-METAC-SLS/Gel also exhibited excellent antifouling performance, achieving antibacterial rates of 91.0 % and 93.1 % against Staphylococcus aureus and Escherichia coli , along with algal removal rates of 83.5 % and 85.1 % for Dunaliella and P orphyridium , respectively. The incorporation of functionalized nanosheets not only enhanced antimicrobial capability but also strengthened the surface hydration layer, further resisting microbial adhesion. This study expands the potential applications of nanocomposite hydrogels in marine antifouling coatings.
研究领域:
材料科学
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纳米技术
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高分子科学
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表面工程
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海洋技术
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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 SURFACTANTS AND DETERGENTS
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2019
·Vol. 22
·期 3
·411-419
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IF 1.672
Ruijuan Wang,Dong Wang,Zhigang Yin,Xuzhao Yang,Quan Liu
The carboxylic acid-type Gemini surfactant (CGS12) was synthesized, and its micellization in aqueous solution at different pH values at 25.0 °C was investigated. The results show that the critical micelle concentration (CMC) of CGS12 at different pH values is only 10 −6 order of magnitude, and the pH has little effect on the CMC. Moreover, the interaction of CGS12 with amino acid surfactant of sodium N-lauroyl sarcosinate (SLS) at 25.0 °C and pH 7.0 was investigated using surface tension, dynamic light scattering (DLS), cryogenic transmission electron microscopy (Cryo-TEM), and Ross–Miles foam measurements. The CGS12/SLS mixture shows a low CMC, and as a whole the CMC value becomes smaller with increasing molar fraction of CGS12 (X CGS12 ). Under different X CGS12 , the mixtures form soluble aggregates with different hydration radii ( R h ). Moreover, the mixture aggregates are mainly in the form of vesicles. The foaming height of CGS12 is worse than that of SLS, but the CGS12/SLS mixture has good foaming stability. This work reveals that the surfactant mixture has good surface activity and good foam stability.
研究领域:
表面活性剂化学
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胶体科学
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物理化学
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产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2024
·
IF 6.3
Xiao Xiao,Guowei Shan,Hong Gao,Zhe Ling,Yujia Tong,Xiaohui Ju,Weixing Li
Heavy metal ions (HMI), a non-degradable toxic substance, has raised widespread concerns in water purification. Membrane separation is a considerable and promising technology for removing HMIs from water, due to its environmentally friendly, clean and highly effective. This study reported a functional composite ultrafiltration membrane prepared from natural biomolecules ε-Poly-L-lysine hydrochloride (PLL), sodium lingo sulfonate (SLS) or sodium alginate (SA) based on the combination strategy of chemical graft and layer-by-layer assembly. The fabricated membrane exhibited a high pure water flux (2957 L·m −2 ·h −1 ), high capture efficiency for Cu 2+ (99.1 %) and Pb 2+ (98.9 %). Notably, the layer-by-layer assembly strategy provides abundant groups for HMI binding, ensuring the high capture efficiency. The fabricated membrane demonstrated a low flux decline (9 %), along with a high flux recovery ratio (99.2 %). Moreover, it exhibited exceptional stability and reusability across a wide pH range (pH 5–9), meanwhile maintaining a capture efficiency of approximately 99 % under near-neutral condition after undergoing 5 cycle experiments for both Cu 2+ and Pb 2+ . Our work builds a straightforward approach for UF membrane fabricating with excellent HMI capture capacity, displaying the potential application in HMI waste water purification.
研究领域:
环境科学
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材料科学
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化学工程
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水处理
✓ 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）