Loading…
Comparison of O/W emulsions produced using cross-flow SPG membranes and a microfluidizer
The oil-in-water emulsions consisting of vegetable (rape seed) oil as the dispersed phase and 2 wt % Tween 80 dissolved in demineralized water as the continuous phase were produced using Shirasu-porous-glass (SPG) membranes and Microfluidizer (Microfluidics Corp., Newton, MA, USA). The mean pore si...
Saved in:
| Main Authors: | , |
|---|---|
| Format: | Default Conference proceeding |
| Published: |
2002
|
| Subjects: | |
| Online Access: | https://hdl.handle.net/2134/10680 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1818174403294265344 |
|---|---|
| author | Goran Vladisavljevic Helmar Schubert |
| author_facet | Goran Vladisavljevic Helmar Schubert |
| author_sort | Goran Vladisavljevic (1253448) |
| collection | Figshare |
| description | The oil-in-water emulsions consisting of vegetable (rape seed) oil as the dispersed phase and 2 wt % Tween 80 dissolved in demineralized water as the continuous phase were produced using Shirasu-porous-glass (SPG) membranes and Microfluidizer (Microfluidics Corp., Newton, MA, USA). The mean pore size of the membranes used was in the range of 0.4-6.6 μm and the wall porosity 53-60 %. The hydraulic membrane resistance was inversely proportional to the square of the mean pore size according to the equation: Rm = 0.056dp -2, where Rm and dp are in m-1 and m, respectively. The shear stress at the membrane surface was 8 Pa and the transmembrane pressure was 10 % higher than the cappilary pressure. Using SPG membranes under these conditions, the emulsions with a mean droplet size 3.5 times larger than the mean pore size and the span of the droplet size distribution of 0.26-0.45 were produced. Therefore, the SPG technology is very suitable for producing emulsions with a narrow droplet size distribution over a wide range of mean droplet sizes (0.2-30 μm) using small mechanical stresses. On the other hand, a Microfluidizer is more appropriate device for producing emulsions with a very low mean droplet size (0.08-0.2 μm). However, the span of the droplet size distribution curves for the emulsions produced using Microfluidizer typically range between 0.91 and 2.7. |
| format | Default Conference proceeding |
| id | rr-article-9246605 |
| institution | Loughborough University |
| publishDate | 2002 |
| record_format | Figshare |
| spelling | rr-article-92466052002-01-01T00:00:00Z Comparison of O/W emulsions produced using cross-flow SPG membranes and a microfluidizer Goran Vladisavljevic (1253448) Helmar Schubert (7127177) Chemical engineering not elsewhere classified Membrane emulsification SPG membrane Oil-in-water emulsions Microfluidizer Chemical Engineering not elsewhere classified The oil-in-water emulsions consisting of vegetable (rape seed) oil as the dispersed phase and 2 wt % Tween 80 dissolved in demineralized water as the continuous phase were produced using Shirasu-porous-glass (SPG) membranes and Microfluidizer (Microfluidics Corp., Newton, MA, USA). The mean pore size of the membranes used was in the range of 0.4-6.6 μm and the wall porosity 53-60 %. The hydraulic membrane resistance was inversely proportional to the square of the mean pore size according to the equation: Rm = 0.056dp -2, where Rm and dp are in m-1 and m, respectively. The shear stress at the membrane surface was 8 Pa and the transmembrane pressure was 10 % higher than the cappilary pressure. Using SPG membranes under these conditions, the emulsions with a mean droplet size 3.5 times larger than the mean pore size and the span of the droplet size distribution of 0.26-0.45 were produced. Therefore, the SPG technology is very suitable for producing emulsions with a narrow droplet size distribution over a wide range of mean droplet sizes (0.2-30 μm) using small mechanical stresses. On the other hand, a Microfluidizer is more appropriate device for producing emulsions with a very low mean droplet size (0.08-0.2 μm). However, the span of the droplet size distribution curves for the emulsions produced using Microfluidizer typically range between 0.91 and 2.7. 2002-01-01T00:00:00Z Text Conference contribution 2134/10680 https://figshare.com/articles/conference_contribution/Comparison_of_O_W_emulsions_produced_using_cross-flow_SPG_membranes_and_a_microfluidizer/9246605 CC BY-NC-ND 4.0 |
| spellingShingle | Chemical engineering not elsewhere classified Membrane emulsification SPG membrane Oil-in-water emulsions Microfluidizer Chemical Engineering not elsewhere classified Goran Vladisavljevic Helmar Schubert Comparison of O/W emulsions produced using cross-flow SPG membranes and a microfluidizer |
| title | Comparison of O/W emulsions produced using cross-flow SPG membranes and a microfluidizer |
| title_full | Comparison of O/W emulsions produced using cross-flow SPG membranes and a microfluidizer |
| title_fullStr | Comparison of O/W emulsions produced using cross-flow SPG membranes and a microfluidizer |
| title_full_unstemmed | Comparison of O/W emulsions produced using cross-flow SPG membranes and a microfluidizer |
| title_short | Comparison of O/W emulsions produced using cross-flow SPG membranes and a microfluidizer |
| title_sort | comparison of o/w emulsions produced using cross-flow spg membranes and a microfluidizer |
| topic | Chemical engineering not elsewhere classified Membrane emulsification SPG membrane Oil-in-water emulsions Microfluidizer Chemical Engineering not elsewhere classified |
| url | https://hdl.handle.net/2134/10680 |