Manufacture of a Hydrophobic Silica Nanoparticle Composite Membrane for Oil-Water Emulsion Separation
The superhydrophobic composite membrane was successfully manufactured by a sol-gel method by drying the surrounding pressure. Tetraethylorthosilicate (TEOS) was used as a hydrophobic agent, while waterglass was used as a source of silica. The effect of the water to waterglass ratio (noted at 16:...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Universitas Indonesia
2020-04-01
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| Series: | International Journal of Technology |
| Subjects: | |
| Online Access: | http://ijtech.eng.ui.ac.id/article/view/3279 |
| Summary: | The
superhydrophobic composite membrane was successfully manufactured by a sol-gel
method by drying the surrounding pressure. Tetraethylorthosilicate (TEOS) was
used as a hydrophobic agent, while waterglass was used as a source of silica.
The effect of the water to waterglass ratio (noted at 16:1 and 19:1) was
evaluated to study the hydrophobic properties of the silica film coated
composite membrane surface. By measuring the water contact angle on the film
surface, the highest contact angle was found to occur at the ratio of 19:1,
which is 143.86°. The stability of the composite membrane was also investigated
by immersing the membrane in water until day 6. The results show that the
synthesized composite membrane has good stability until day 6. The
hydrophobicity of the surface of the silica film membrane was found to be
unaffected by immersion time. Furthermore, the hydrophobicity increased after 6
days due to the interaction of alkyl groups with the humidified environment,
and the surface was more stable in hydrophobicity (i.e., the contact angle of
water is 153.79°). In addition, hydrophobic properties were obtained,
confirming that this film has the potential to be applied to the separation of
oil-water emulsions. |
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| ISSN: | 2086-9614 2087-2100 |