scholarly journals THE INFLUENCE OF POLAR AND NON-POLAR EMOLLIENTS ON THE STRUCTURE AND SKIN MOISTURIZING POTENTIAL OF THE EMULSIONS STABILIZED BY MIXED EMULSIFIER

2016 ◽  
Vol 55 (2) ◽  
pp. 25-30 ◽  
Author(s):  
Dragana Stojiljković ◽  
◽  
Ivana Arsić ◽  
Marija Tasić-Kostov
Keyword(s):  
Mixed Emulsifier

Research on the Stability of the Paste-Like Silicone Impregnant

2013 ◽  
Vol 650 ◽  
pp. 130-133
Author(s):  
Wen Juan Gu ◽  
Ying Li ◽  
Ji Ke Liu
Keyword(s):  
Service Life ◽  
Chemical Substance ◽  
Salt Solutions ◽  
Silicon Compounds ◽  
Main Factors ◽  
Architectural Conservation ◽  
The Stability ◽  
Mixed Emulsifier

The protecting of concrete, which consists of coating a chemical substance onto concrete’s surface, has been applied to architectural conservation. There is increasing interest in studying materials for concrete which can reduce the infiltration of water and salt solutions and rehabilitate and extend its service life. Silicon compounds are frequently used as a base for commercial protecting paint due to their hydrophobicity and penetrability. However, the stability of the impregnant emulsion is affected by many factors. The effect of three main factors such as component, pH, and emulsifier were studied in this paper. The stability of the impregnant decreased with the increase of pH. And the mixed emulsifier and 4～6% amount of emulsifier would be optical for the stability of the system and maintain the activity at the same time.

Preparation of β-CD-HAP Composite Microspheres

2016 ◽  
Vol 697 ◽  
pp. 67-70
Author(s):  
Liang Liang Luo ◽  
Liang Hu ◽  
Xiao Feng Xing ◽  
Wei Min Gao ◽  
Yu Ping Guo
Keyword(s):  
Raw Materials ◽  
Tween 80 ◽  
Hydroxyapatite Nanoparticles ◽  
Composite Microsphere ◽  
X Ray ◽  
Composite Microspheres ◽  
Transmission Electron ◽  
Structure Morphology ◽  
Ft Ir ◽  
Mixed Emulsifier

β-cyclodextin-hydroxyapatite (β-CD-HAP) composite microspheres were prepared in invert microemulsion method using spherical morphology hydroxyapatite nanoparticles (nHAP) as raw materials, Span-Tween cosurfactant as mixed emulsifier and epichlorohydrin as cross linker agent. The structure, morphology and β-CD-HAP was characterized by Fourier transform Infrared spectroscope (FT-IR), X-ray powder diffraction (XRD), transmission electron microscope (SEM). Results showed that the β-CD-HAP microspheres were synthesized by adding epichlorohydrin, span-80, tween-80, and sodium hydroxide and the particle size of β-CD-HAP composite microsphere with good dispersion was several tens of nanometer.

X-ray investigation of the role of the mixed emulsifier in the structure formation in o/w creams

2006 ◽  
Vol 285 (6) ◽  
pp. 657-663 ◽  
Author(s):  
Magdolna Kónya ◽  
Imre Dékány ◽  
István Erõs
Keyword(s):  
Structure Formation ◽  
X Ray ◽  
Mixed Emulsifier

Environmentally Friendly Polyurea Microcapsules of Pesticides by PVA Mediated Interfacial Polymerization

2006 ◽  
Vol 510-511 ◽  
pp. 678-681 ◽  
Author(s):  
Seung Uk Paik
Keyword(s):  
Particle Size ◽  
Active Ingredient ◽  
Interfacial Polymerization ◽  
Agitation Speed ◽  
Stable Emulsion ◽  
High Concentration ◽  
Protective Colloid ◽  
Ecological Problems ◽  
Concentrated Emulsion ◽  
Mixed Emulsifier

Microcapsules containing agrochemical pesticides used to control insects have attracted considerable interest for the last three decades in the search for reducing intrinsic toxicities, overconsumption, and ecological problems that have been caused generally by conventional pesticides. Biodegradable polyurea microcapsules containing pesticides such as ethyl parathion, benlate, and daconyl were prepared by the interfacial polymerization of polyisocyanate monomers with polyamines. In the process of microencapsulation with various emulsifying agents under the condition of high to medium concentration, polysulfonated emulsifiers such as lignosulfonate and styrenesulfonate sometimes failed to produce microcapsules because of random solidification of the aqueous mass leaving a serious problem of reproducibility. A protective colloid, polyvinylalcohol (PVA), was examined to prepare the stable high-concentrated emulsion under various conditions. Capsule slurry with 33% active ingredient was successfully obtained by the use of ca. 1% PVA as a protective colloid. In the case of the capsule with 42% active ingredient, the wall-forming reaction produced microcapsules, which turned out to be considerably coagulated or sometimes resulted in the failure of producing microcapsules. However, it was found that the mixed emulsifier of 10% of PVA and 90% of poly (sodium4-styrenesulfonate (PSS) produced stable emulsion and successfully led to microcapsules in high concentration under various conditions without any problems of reproducibility. The particle size distribution of the microcapsules was not much influenced by surfactants, and the size and distribution of the obtained microcapsules were directly affected by the agitation speed of emulsion.

scholarly journals Effect of Mixed Emulsifier on the Physicochemical Properties of Avocado Oil Nano-emulsions

2020 ◽  
Vol 11 (2) ◽  
pp. 57-62
Author(s):  
Tzung-Han Chou ◽  
◽  
Daniel Setiyo Nugroho ◽  
Chia-Hua Liang ◽  
◽  
...  
Keyword(s):  
Physicochemical Properties ◽  
Avocado Oil ◽  
Mixed Emulsifier
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