PREPARATION OF NANOEMULSIONS BY HIGH-ENERGY AND LOWENERGY EMULSIFICATION METHODS
| Autor: | Vranić Edina, Elezović Alisa, Orman Džana, Rahić Ognjenka, Hadžiabdić Jasmina |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
Sonication Disperser 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Homogenization (chemistry) 0104 chemical sciences Surface tension Adsorption Chemical engineering Pulmonary surfactant Homogenizer Ultrasonic sensor 0210 nano-technology |
| Zdroj: | IFMBE Proceedings ISBN: 9789811041655 |
| DOI: | 10.1007/978-981-10-4166-2_48 |
| Popis: | High energy methods include high pressure homogenization, microfluidization, sonication, method in jet disperser, high-amplitude ultrasonic method. The droplet size of the dispersed phase in nanoemulsions produced in a high pressure homogenizer declines with increasing of the number of homogenization cycles its, lowering of surface tension, the increasing the rate of surfactant adsorption and decreasing the ratio of viscosity of the dispersed and continuous phase to some extent. The droplet size of the dispersed phase of nanoemulsions produced in microfluidizer decreases with the increase of homogenization pressure, the increase of the number of passages of nanoemulsion through microchannels, the increase of the concentration of surfactant and decrease of the ratio of the dispersed and continuous phases’s viscosities. The droplet size of the dispersed phase in nanoemulsions produced by sonication decreases with increasing duration of ultrasonic homogenization, power levels and concentration of surfactant. Only small amounts of nanoemulsion formulations can be prepared by this method. |
| Databáze: | OpenAIRE |
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