Negative Synergistic Effect on Foaming in Body Care Products with Silicone Oil and the Needle-Like Crystal of Ethylene Glycol Distearate
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Yeping Ruan
Abstract
The foaming capability, which is related to the ratio of surfactants, the dosage and the crystallization rate of ethylene glycol distearate (EGDS), is discussed. By the same progress, with the proportion of ammonium lauryl sulfate (AESA) being increased, the foam height of the body care product is linearly improved. The crystal features of EGDS and pearlescence quality of the body care products are strongly linked to the surface aspect, the size distribution of EGDS crystals and their level of aggregation. Comparing the different crystallization processes, when rapidly being cooled with cold water and stirred at the speed of exceeding to 1 000 rpm, the aggregation of the crystals is decreased, and the pearlescence of the body care product is poor. When being ordinary cooled at room temperature and stirred at the speed of no more than 500 rpm, the aggregation of the crystals is increased, and the pearlescence of the body care products is obvious. The microstructures reveal that the oil drops are pierced to smaller by the EGDS needle crystals. Then the smaller oils act as antifoaming agents to cut down the foam height of the body care product. Consequently, the foam height of the body care products with good pearlescent effect is decreased. Furthermore, being added silicone oil emulsion, the foam height falls faster because of demulsifying. The result shows that the silicone oil and the needle-like crystals have a negative synergistic effect on foaming in the body care products.
Kurzfassung
Es wird die Beziehung zwischen Schaumvermögen, dem Verhältnis der Tenside, der Dosierung und der Kristallisationsgeschwindigkeit von Ethylenglykoldistearat (EGDS) diskutiert. Durch den gleichen Vorgang, bei dem der Anteil an Ammoniumlaurylsulfat (AESA) zunimmt, wird die Schaumhöhe des Körperpflegemittels linear verbessert. Die Kristalleigenschaften von EGDS und die Perlglanzqualität der Körperpflegemittel sind stark mit dem Oberflächenaspekt, der Größenverteilung der EGDS-Kristalle und ihrem Aggregationsgrad verbunden. Vergleicht man die verschiedenen Kristallisationsvorgänge, wobei schnell mit kaltem Wasser abgekühlt und mit einer Geschwindigkeit über 1 000 Umdrehungen pro Minute gerührt wird, nimmt die Aggregation der Kristalle ab und der Perlglanz der Körperpflegemittel ist schlecht. Wird dagegen einfach bei Raumtemperatur abgekühlt und ist die Rührgeschwindigkeit nicht größer als 500 Umdrehungen pro Minute, so ist der Perlglanz der Körperpflegemittel deutlicher. Die Mikrostrukturen machen deutlich, dass die Öltropfen von den EGDS-Nadeln zu kleineren Tropfen durchstoßen werden. Danach verhalten sich die kleineren Tropfen wie Entschäumer und brechen den Schaum des Körperpflegemittels. Infolgedessen nimmt die Schaumhöhe des Körperpflegemittels mit gutem Perlglanzeffekt ab. Des Weiteren fällt die Schaumhöhe bei Zugabe einer Silikonölemulsion schnell aufgrund der Emulsionstrennung. Das Ergebnis zeigt, dass Silikonöl und die nadelförmigen Kristalle einen negativen synergistischen Einfluss auf das Schäumen in Körperpflegemitteln haben.
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© 2014, Carl Hanser Publisher, Munich
Artikel in diesem Heft
- Contents/Inhalt
- Contents
- Abstracts
- Abstracts
- Review Article
- Arginine Based Novel Cationic Surfactants: A Review
- Application
- Selection of Surfactants on the Basis of Foam and Emulsion Properties to Obtain the Fire Fighting Foam and the Degreasing Agent
- Negative Synergistic Effect on Foaming in Body Care Products with Silicone Oil and the Needle-Like Crystal of Ethylene Glycol Distearate
- Technical Chemistry
- Wetting Ability in Aqueous Mixtures of Amine Oxide with Anionic and Nonionic Surfactants
- Environmental Chemistry
- Validation of an HPLC Method for Determining log Pow Values of Surfactants
- Removal of Lead From Aqueous Media Using Carbonized and Acid Treated Orange Peel
- Corrosion and Scale Inhibition Properties by Phosphate-free and Nitrogen-free Scale Inhibitor in Cooling Water System
- Preparation and Application of Fluorescent-tagged Inhibitor for Calcium Phosphate and Iron(III) Hydroxide Scales in Industrial Cooling Water Systems
- Novel Surfactants
- Effect of Tuned Head Polarity of Cetyl Trimethyl Ammonium Bromide on their Physicochemical Properties
- Physical Chemistry
- Aggregation Behavior of PEO-PPO-PEO Tri-Block Copolymer (Pluronic®L64) in Nonionic Surfactant Additives Environment
- Surfactant Processing
- Solidification of Surfactants and Detergents to Dust-Free Free Flowing Pastilles
Artikel in diesem Heft
- Contents/Inhalt
- Contents
- Abstracts
- Abstracts
- Review Article
- Arginine Based Novel Cationic Surfactants: A Review
- Application
- Selection of Surfactants on the Basis of Foam and Emulsion Properties to Obtain the Fire Fighting Foam and the Degreasing Agent
- Negative Synergistic Effect on Foaming in Body Care Products with Silicone Oil and the Needle-Like Crystal of Ethylene Glycol Distearate
- Technical Chemistry
- Wetting Ability in Aqueous Mixtures of Amine Oxide with Anionic and Nonionic Surfactants
- Environmental Chemistry
- Validation of an HPLC Method for Determining log Pow Values of Surfactants
- Removal of Lead From Aqueous Media Using Carbonized and Acid Treated Orange Peel
- Corrosion and Scale Inhibition Properties by Phosphate-free and Nitrogen-free Scale Inhibitor in Cooling Water System
- Preparation and Application of Fluorescent-tagged Inhibitor for Calcium Phosphate and Iron(III) Hydroxide Scales in Industrial Cooling Water Systems
- Novel Surfactants
- Effect of Tuned Head Polarity of Cetyl Trimethyl Ammonium Bromide on their Physicochemical Properties
- Physical Chemistry
- Aggregation Behavior of PEO-PPO-PEO Tri-Block Copolymer (Pluronic®L64) in Nonionic Surfactant Additives Environment
- Surfactant Processing
- Solidification of Surfactants and Detergents to Dust-Free Free Flowing Pastilles
