Degreasing Efficiency of Electroplating Pretreatment Process Using Secondary Alcohol Ethoxylate as Nonionic Surfactant

Article Engineering, Marine

Effect of Surfactants with Different Hydrophilic-Lipophilic Balance on the Cohesive Force between Cyclopentane Hydrate Particles

Qingchao Fang et al.

Summary: In this study, the effect of Tween and Span series surfactants with different HLB values on the cohesive force between cyclopentane hydrate particles was investigated. The results showed that the cohesive force decreased with decreasing HLB for both Tween and Span surfactants. The cohesive force increased with increasing concentration of Tween surfactants, while it decreased with increasing concentration of Span surfactants. The mechanism behind these effects was attributed to the aggregation of low-HLB surfactant molecules at the oil-water or gas-water interface, which increased the surface roughness and hydrophobicity of the hydrate particles, thus inhibiting the formation of liquid bridges between particles.

JOURNAL OF MARINE SCIENCE AND ENGINEERING (2022)

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Article Engineering, Environmental

Cloud point extraction based on non-ionic surfactants: An ecofriendly tool for recovering papain from papaya latex

Melisa Di Giacomo et al.

Summary: The potential use of cloud point extraction with aqueous micellar two-phase systems for recovering papain from fresh papaya latex was evaluated, showing promising results.

JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING (2022)

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Article Materials Science, Multidisciplinary

Effect of Ultrasonic Cleaning of Titanium Turning Scraps Immersed in Alkaline Solution and Subsequent Preparation of Ferrotitanium Ingots

Suhwan Yoo et al.

Summary: This study introduces an optimized ultrasonic cleaning process for pretreating titanium scraps in a low-concentration alkaline solution, successfully removing most of the impurities such as carbon, oxygen, and nitrogen, resulting in a ferrotitanium ingot with a carbon concentration of less than 200 ppm.

KOREAN JOURNAL OF METALS AND MATERIALS (2021)

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Article Electrochemistry

Surface Modifications Induced by Pretreatments and Effects on The Chemical Structure of TCP Conversion Coating on Al-Cu-Li Alloy (AA2050)

Meicheng Li et al.

Summary: The study investigated the surface modifications of an Al-Cu-Li alloy at different stages of pretreatment and TCP deposition, revealing that the pretreatments significantly influenced the subsequent formation of TCP. The presence of Cu enrichment in the outer TCP layer of the pretreated sample enhanced the cathodic activity of the alloy.

JOURNAL OF THE ELECTROCHEMICAL SOCIETY (2021)

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Article Chemistry, Physical

Conductivity and cloud point studies of the interaction of lomefloxacin hydrochloride with anionic and nonionic surfactants in electrolytes solution

S. K. Md Ali Ahsan et al.

Summary: The study investigated the interaction of lomefloxacin hydrochloride (LMFH) drug with anionic and nonionic surfactants in electrolyte media, showing that the critical micelle concentrations of the anionic surfactant increased with the LMFH concentration while the cloud point values of the mixtures decreased with increasing temperature.

JOURNAL OF MOLECULAR LIQUIDS (2021)

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Article Materials Science, Multidisciplinary