Published by De Gruyter

Volume 59 Issue 4

Issue of Tenside Surfactants Detergents

Contents
Journal Overview

Publicly Available July 6, 2022

Frontmatter

Page range: i-iii

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Review

May 17, 2022

Research progress in the removal of heavy metals by modified chitosan

Zheng Ji, Yansong Zhang, Huchuan Wang, Chuanrun Li

Page range: 281-293

Abstract

Chitosan and its modifiers have been widely studied for their good biocompatibility and excellent adsorption properties for heavy metal ions. The synthesis and application of modified chitosan, the effects of process variables (such as pH, amount of adsorbent, temperature, contact time, etc.), adsorption kinetics, thermodynamics and the adsorption mechanism on the removal of heavy metal ions are reviewed. The purpose is to provide the latest information about chitosan as adsorbent and to promote the synthesis of modified chitosan and its application in the removal of heavy metals.

Novel Surfactants

May 16, 2022

Surface properties of dicationic ionic liquids and correlation with biological activity

Marta Wojcieszak, Damian Krystian Kaczmarek, Klaudia Krzyźlak, Amelia Siarkiewicz, Tomasz Klejdysz, Katarzyna Materna

Page range: 294-304

Abstract

The surface activity of dicationic ionic liquids is described in this paper. The basic interfacial parameters including critical micelle concentration (CMC), surface tension at the CMC ( γ CMC ), the adsorption efficiency (pC 20 ), surface excess (Γ max ), the minimum surface occupied by a single molecule ( A min ), and Gibbs energy (Δ G 0 ads ) were investigated and compared. Basically, we wanted to extend our previous study on dicationic ionic liquids with bis-ammonium cation. Knowing that, the compounds obtained are effective in limiting the feeding of adult and larvae confused flour beetle ( T. confusum ), it was decided to correlate the deterrent activity with the surface properties of analyzed dicationic ionic liquids. Accordingly, it was found that the deterrent activity of the studied compounds increases with increasing wetting ability.

April 15, 2022

Study of interactions of the cationic 12–2–12 Gemini surfactant with saccharides in aqueous solution: volumetric, compressibility and viscometric analysis

Atika, Kuldeep Singh, Suvarcha Chauhan

Page range: 305-318

Abstract

In the present study, the interaction behaviour of 12–2–12 Gemini surfactant in aqueous saccharide solutions (lactose and maltodextrin solutions) is investigated using density, sound velocity and viscosity measurements. The density and sound velocity data were used to determine the volume and compressibility parameters. The effects of temperature and concentration/strength of the solutions on the interaction behaviour were analysed by conductivity studies over a wide temperature (293.15–313.15) K and concentration range of the saccharides as well as of the surfactant. It was found that predominantly hydrophobic interactions together with ionic/hydrophilic interactions between 12–2–12 Gemini surfactant and the saccharides maltodextrin and lactose play a role. In addition, the structural changes in the 12–2–12 Gemini solutions induced by lactose and maltodextrin were investigated by viscosity measurements. The results confirm the observations from the volume and compressibility studies. The study of the different hydrophobic/hydrophilic interactions in the Gemini surfactant-sacharide-water mixtures are very helpful to understand the structural behaviour of Gemini surfactants in the view of their biological significance.

Physical Chemistry

May 26, 2022

Glutamic acid-glucose Gemini surfactants: physico-chemical properties and effect on the dyeability of polyester fabric

Li-Huei Lin, Ya-Ting Huang

Page range: 319-330

Abstract

In this study we used glutamic acid as a linking group and glucose, propylene glycol, and fatty alcohols as raw materials to prepare glutamic acid-glucose Gemini surfactants. Fourier transform infrared spectroscopy was used to verify the structures of the surfactants. We investigated their surface properties (surface tension, contact angles), and their effect on the fluorescence of pyrene. To test their potential application, we prepared emulsions with the surfactants and olive oil, and evaluated the emulsion stability with a particle size analyzer. We also investigated the ability to dye polyester fabrics in the presence of the glutamic acid-glucose-gemini surfactants. Among our synthesized materials, those with shorter alkyl chains exhibited better surface activities and emulsification properties, resulting in excellent dye uptake and leveling.

Publicly Available May 18, 2022

Study on the formation and stability of polyol-in-oil emulsion

Wanping Zhang, Lin Chen, Xingliang Shen, Yaping Wang, Xiang Fang, Qianjie Zhang

Page range: 331-338

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Abstract

In this study, the influence of polyols, emulsifiers and oils on the formation and stability of polyol-in-oil (P/O) emulsions was investigated. The interfacial tension in P/O systems is much lower than that of water-oil systems, so polyols and oils showed a greater affinity, which was not conducive to the stability of the emulsion system. High compatibility of the emulsifier and the inner and outer phases was the key to the formation of stable emulsions. Using polyethylene glycol 400 (PEG) as polyol phase, mineral oil or squalane as oil phase and cetyl PEG/PPG-10/1 dimethicone (EM 90) as emulsifier, long-term stable P/O emulsions with homogeneous droplets were successfully prepared.

Environmental Chemistry

May 18, 2022

Effect of water contaminated with hand washing liquid on germination characteristics of wheat, flax, and lentil

Hassan Heidari, Zahra Parhoon

Page range: 339-343

Abstract

Due to climate change and declining water resources, some farmers are turning to wastewater. One of water pollutants is household detergent. To examine this, a study was conducted to determine the effect of water contaminated with hand washing liquid on the germination characteristics of wheat, flax, and lentil in a completely randomized design with three replications in 2020. Experimental treatments included water contaminated with different concentrations of hand washing liquid ((0, 0.01, 0.1, 1, and 10)%) of hand washing liquid in water). The results showed that with increasing concentration of the contaminant in the water, the germination percentage, the caulicle length, and the radicle length of wheat, flax and lentil decreased. It was observed that wheat had a higher resistance to hand washing liquid than lentil and flax so that at a concentration of 0.01% and 0.1%, the wheat radicle was still growing. It is recommended to avoid irrigating plants with contaminated water with high amounts of hand washing liquid.

Synthesis

May 19, 2022

Extracted saponin from Anabasis setifera plant as a biosurfactant for stabilization of oil in water (O/W) nano-emulsion based on date palm (Phoenix dactylifera) kernel oil

Fatemeh Rigi

Page range: 344-352

Abstract

Saponin was extracted from the Anabasis setifera plant and used to stabilize an oil-in-water (O/W) emulsion based on date palm kernel oil. Different amounts of the extracted saponin were used with a constant oil concentration (1.5% w/w). The droplet size distribution, emulsion droplet size value ( d -ave), polydispersity index (PDI) and zeta potential of the emulsions were determined using dynamic light scattering (DLS). These parameters were measured and compared after seven days of emulsion preparation. The best results ( d -ave = 41.7 nm, PDI = 0.1 and zeta potential = −29.8 mV) were obtained for the CMC of saponin. Both the oil and the surfactant were specifically extracted and used from the nature of Saravan in the Baluchestan region of Iran. This research presents a green and cost-effective aspect for potential formulations of nano-emulsions that can be used in the food and cosmetic industries.

July 6, 2022

Synthesis of aluminium alkylbenzene sulfonate and its behavior as a flow improver for crude oil

Zhichao Zhou, Wangyuan Zhang, Sanbao Dong, Jie Zhang, Gang Chen

Page range: 353-361

Abstract

Low-molecular flow improvers for crude oil are becoming increasingly important chemical agents for crude oil production in oil fields. In this work, three alkyl benzene sulfonates were synthesized and evaluated as flow improvers for crude oil. The results show that the three flow improvers have an effect on L8401 crude oil (heavy oil). Among them, aluminium dodecylbenzene sulfonate (AlDBS) has the best effect as it reduces the viscosity rate by more than 80%. After adding 900 mg/L AlDBS, the freezing point is lowered by 15 °C. The crude oil flow improvement was proven with microphotographs. The co-crystallization behavior after addition of the agent interacts with the saturated hydrocarbons in the crude oil, which is the reason for lowering the freezing point of crude oil. Moreover, infrared spectroscopy and differential scanning calorimetry analysis (DSC) were used to illustrate the interaction mechanism between low-molecular flow improvers for crude oil and the components in crude oil.

About this journal

Tenside Surfactants Detergents offers the most recent results of research and development in all fields of surfactant chemistry, such as: synthesis, analysis, physicochemical properties, new types of surfactants, progress in production processes, application-related problems and environmental behavior. Since 1964 Tenside Surfactants Detergents offers strictly peer-reviewed, high-quality articles by renowned specialists around the world.
All articles are subject to thorough, independent peer review.
Tenside Surfactants Detergents is the organ of the German Chemical Society (GDCh e.V.), Division "Chemie des Waschens".

Objective
Tenside Surfactants Detergents (TSD) publishes scientific manuscripts covering all aspects of chemistry, physics and application technology of surface-active substances (surfactants). The journal is aimed at scientists from industry, universities and research institutes who are actively involved in research work.

Topics

Physical chemistry of surfactants and surfactant mixtures in solutions and at interfaces
Analytical chemistry and synthesis of surfactants
Development of surfactants with special properties
Production of surfactants from renewable/microbiological resources
Novel "Green" Surfactants/Biosurfactants
Foams, Gels, Emulsions, Microemulsions
Application of surfactants in cleaning and body-care products, in pharmaceutical dosage forms, in agrochemicals and enhanced oil recovery
Development of sustainable cleaning products and cleaning techniques
Cleaning product safety and toxicology
Hygiene requirements for cleaning and personal care products
Consumer behavior in household cleaning
Development of cleaning products performance test methods

Subjects

Surfactant Chemistry
Colloid and Interface chemistry
Surface Chemistry
Textile chemistry
Environmental Chemistry
Detergent and Cleaning Agent Production

Article formats
Original Research Papers, Review Articles, and Short Communications